Solar FAQ: Seattle & Puget Sound

The cost of a residential solar system in Seattle typically ranges from $15,000 to $35,000 before any incentives, depending on system size, panel brand, and installation complexity. Most Puget Sound homes need systems between 6 and 12 kilowatts. Through a Sunergy Systems lease, homeowners can capture up to a 30% discount off the cash purchase price — applied at the start of financing, with no waiting and no IRS forms to file. Sunergy Systems provides free, no-obligation quotes tailored to your home.

In Washington State, the average residential solar system costs between $18,000 and $28,000 before incentives, with most homes in the 7–10 kW range. Costs vary based on roof complexity, panel efficiency, battery storage, and your utility territory. Washington's retail sales tax exemption on solar equipment can reduce the effective cost by several hundred to a few thousand dollars. Sunergy Systems walks you through the full cost breakdown in your free proposal.

Solar installation in the Puget Sound area typically runs $2.50 to $3.50 per watt installed before incentives — roughly $20,000 to $28,000 for a typical 8 kW system. Roof pitch, shading, electrical panel condition, and permit fees can affect the final price. Washington's sales tax exemption for solar equipment helps offset some of the upfront cost.

Washington homeowners can finance solar through cash purchase, a solar loan, a home equity loan or HELOC, or a Sunergy Systems prepaid solar lease. Sunergy Systems' lease is a one-time, paid-in-full structure — there are no monthly lease payments — that delivers up to a 30% discount off the cash purchase price applied at the start. Cash and loan paths give immediate ownership; the prepaid lease is a third-party-owned arrangement that captures the 30% reduction upfront. Your consultant compares all options in your free proposal.

Yes, solar loans are widely available through national solar lenders, local credit unions, and banks. These loans are often unsecured with no money down and competitive interest rates. Loan terms range from 5 to 25 years, and monthly payments are often designed to be comparable to your current electric bill. Your Sunergy Systems consultant can walk you through current lending options.

A solar power purchase agreement (PPA) is a financing arrangement where a third-party company owns panels on your roof and sells you the electricity they produce at a set rate — typically lower than the utility rate. PPAs are billed per kWh and involve ongoing monthly charges. Sunergy Systems doesn't sell PPAs; instead we offer a prepaid solar lease where the entire lease is paid in one upfront payment — there are no monthly payments after that — and you capture an up-to-30% discount off the cash purchase price right at the start.

Yes — Sunergy Systems offers a prepaid solar lease through Participate Energy, and for most Washington homeowners in 2026 this is the better financial option. The prepaid lease delivers an up-to-30% discount off the cash purchase price — savings that a cash or loan purchase cannot capture now that the federal Investment Tax Credit through ownership has ended. You make one upfront payment, there are no monthly payments after that, and the lease is freely assignable to a future buyer if you sell your home. You still keep 100% of the energy production and the same panels and equipment — just at a lower effective price.

Adding a home battery in the Seattle area typically costs $12,000 to $20,000 installed, depending on battery brand, capacity, and installation complexity. The Tesla Powerwall 3 and FranklinWH are the two primary options Sunergy Systems offers. Costs increase when electrical panel upgrades are needed or multiple units are required for whole-home backup. Consult your tax advisor on current incentive availability for batteries in 2026.

Yes, Sunergy Systems works with financing partners to offer solar loans with little or no money down. Financing options are discussed during your free consultation, and the team helps you compare the long-term costs and benefits of different approaches. The goal is to find a structure that makes your solar investment work for your budget and timeline.

The payback period for a purchased solar system in Washington State typically ranges from 7 to 12 years, depending on system size, electricity usage, local utility rates, and how your utility compensates for excess generation. Washington's sales tax exemption and property tax exemption for solar improve the economics. After payback, your system continues generating electricity at minimal cost for 25 to 30 more years.

Yes, research consistently shows owned solar systems increase home resale value — studies find buyers willing to pay $15,000 to $25,000 or more for homes with solar. In Washington State, this increase in value is exempt from property taxes, meaning you won't owe additional property tax on the value solar adds. Leased systems do not typically add the same value and can complicate the sale process.

Washington State law exempts the added home value from solar installations from property tax assessment. If solar adds $20,000 to your home's appraised value, you won't pay additional property taxes on that amount. This exemption is a meaningful financial benefit that improves the overall return on your solar investment over time.

Washington State provides a retail sales tax exemption for solar energy systems and components purchased for residential use. You do not pay the standard Washington sales tax — which can be 10% or more in King County — on qualifying solar equipment. This exemption can save homeowners several hundred to a few thousand dollars and should be automatically applied by licensed installers at the time of purchase.

Beyond the system cost, watch for potential additional expenses: roof repairs if the roof is nearing end of life, electrical panel upgrades if your current panel is older, permit and interconnection fees (often included in installer quotes), and monitoring or maintenance costs over time. Sunergy Systems includes a thorough site assessment as part of the proposal process so there are no surprises after you sign.

When comparing solar quotes, look beyond the total price. Evaluate the installer's reputation (Google, Yelp, Solar Reviews ratings; Better Business Bureau standing) and years in business — installers with a long track record in your specific market are far more likely to honor warranties and stay around to support your system. Confirm whether crews are employees or subcontractors. Then compare cost per watt, specific panel and inverter models, equipment and workmanship warranties, installer certifications (NABCEP, REC Gold, etc.), and projected annual energy production. Sunergy Systems has been installing solar in the Puget Sound since 2005, employs all of its install crews, and provides transparent, itemized proposals.

A cash purchase means you pay the full system cost upfront — no monthly payments — and own the system from day one. A solar loan lets you finance over time with no money down while still owning the system, but you pay interest over the loan term. Worth noting: in 2026, neither cash nor loan captures a federal credit through ownership. The Sunergy Systems prepaid solar lease — also a single upfront payment with no monthly payments — does capture an up-to-30% discount off the cash purchase price at the start, which often makes it the most cost-effective option.

The Sunergy Systems prepaid solar lease is paid upfront in one payment, so it doesn't require ongoing credit underwriting the way a monthly-payment lease or solar loan would. If you choose to fund that upfront payment with a solar loan or HELOC, lenders typically look for a credit score of around 650 or higher, though requirements vary. Your Sunergy Systems consultant can walk you through funding options.

A solar loan means you borrow money to buy the system outright; you own it from day one and make monthly loan payments. A traditional solar lease means a financing partner owns the system and you pay a monthly amount to use it. A power purchase agreement (PPA) is similar but billed per kWh produced. Sunergy Systems offers a different structure — a prepaid solar lease — where you make a single upfront payment, have no monthly payments after that, and capture an up-to-30% discount off the cash purchase price at the start.

Solar can sometimes be financed by refinancing your mortgage to roll in the system cost, or through a home equity line of credit (HELOC). Both can work but require home equity and lender approval. Many homeowners find the Sunergy Systems prepaid solar lease — a single upfront payment, no monthly payments, with up to 30% off the cash purchase price — simpler and faster than touching their mortgage. Your consultant can compare options.

A home equity line of credit (HELOC) can be a competitive way to pay for solar if you have substantial home equity and a low HELOC rate. The interest may be tax deductible (consult your tax advisor), and there's typically no separate solar lender involved. The trade-off is putting your home as collateral and dealing with variable interest rates.

Participate Energy is the financing partner that owns the solar (and optional battery) system on your roof during the prepaid lease term. They structure the lease, hold the equipment ownership, and administer the up-to-30% discount mechanism. Sunergy Systems remains your installer and primary local point of contact — handling design, install, service, and warranty support — while Participate Energy holds the lease.

Sunergy Systems chose Participate Energy because their prepaid lease is the cleanest, most homeowner-friendly leasing product on the market: a single upfront payment, no monthly bills, no escalators, freely assignable on home sale with no credit check, and a transparent buyout schedule. It pairs Sunergy's installation quality with the financial advantages of a third-party-owned system.

Traditional solar leases and PPAs charge a monthly fee or per-kWh rate that escalates over time, and transferring the lease at home sale typically requires the buyer to qualify financially. The Sunergy/Participate Energy prepaid lease is fundamentally different: one upfront payment, no monthly bills, no escalators, and a freely-assignable transfer with no buyer credit check or qualification.

Sunergy Systems offers a prepaid solar lease that delivers up to a 30% discount off the cash purchase price of your solar system. The lease is paid in full in one upfront payment — there are no monthly lease payments — and the discount is applied at the start. You receive the savings immediately rather than waiting for tax season, and there's no IRS form to file. This is the primary way Washington homeowners can capture a 30% reduction on solar in 2026.

Through the prepaid solar lease offered by Sunergy Systems, the financing structure passes value to homeowners that reduces the effective price of their system by up to 30% off the cash purchase price. The lease is a single upfront payment with no monthly payments. Unlike the previous federal Investment Tax Credit, which required the homeowner to claim it on a tax return, this discount is built into the lease and applied upfront — no tax filing required.

Yes. With the Sunergy Systems prepaid solar lease, the up-to-30% discount off the cash purchase price is applied at the very start. You make a single upfront payment, with no monthly payments after that. You don't need to file any IRS forms, you don't need to wait for tax season, and you don't need a specific tax liability to benefit. The savings are baked into your lease terms from day one.

The up-to-30% discount on the Sunergy Systems prepaid solar lease is applied at the very start — it's reflected directly in the single upfront payment you make. There's no waiting period, no need to file a tax return, and no need to claim the savings later. You see the reduced price in your lease agreement immediately.

No. Sunergy Systems offers a prepaid solar lease, which means the full lease is paid in one upfront payment at the start of the project. There are no monthly lease payments at any point during the lease term, and no future bills from the lease provider. Your only ongoing solar-related costs are your standard utility connection charges and any optional service items.

The Sunergy Systems prepaid solar lease through Participate Energy runs 25 years, matching the warranty period of the solar equipment. If you also lease a battery, the prepaid battery lease runs 10 years. Both leases are paid in full at the start in a single upfront payment — there are no monthly payments during either term. You benefit from 100% of the energy production and battery storage for the full lease length, and both leases are freely assignable to a new homeowner if you sell.

The Sunergy Systems prepaid solar lease is a single upfront payment with no monthly payments. The exact amount depends on system size and the specifics of your design — but because the lease delivers an up-to-30% discount off the cash purchase price, the upfront payment is meaningfully lower than buying the equivalent system outright in cash. Your free Sunergy Systems proposal includes the exact upfront figure for your home.

All at once. The Sunergy Systems solar lease is structured as a prepaid lease — you make a single upfront payment that covers the full lease term, then there are no monthly payments after that. Because it's prepaid in full, there's no future balance to pay off. The system stays in place for the full lease length, and the lease is freely assignable to a new homeowner if you sell.

No. The Sunergy Systems prepaid solar lease is a single upfront payment that covers the entire term. There are no annual fees, no service charges, and no recurring lease bills from Participate Energy at any point during the lease.

Absolutely. We encourage prospective customers to review the lease agreement with their attorney, financial advisor, or anyone else they trust. The contract is plain-language and is provided well in advance of signing. Sunergy Systems and Participate Energy will answer any questions your reviewer raises.

From signed contract to a fully operational system, the typical timeline is 8 to 14 weeks: 1–2 weeks for design, 2–6 weeks for permits and approvals, 1–3 weeks for equipment procurement, and 1–2 days for the physical install. Utility interconnection approval can add additional time afterward. Sunergy Systems manages the full process and keeps you updated throughout.

The Sunergy Systems prepaid solar lease is freely assignable to a new homeowner if you sell your home. There is no credit check and no approval process for the buyer. The buyer and seller simply sign a simple transfer document, and the new homeowner takes over the lease with the same terms and conditions — including the existing solar system, the production it generates, and the original lease length. Because it's a prepaid lease, there are no remaining payments for the buyer to assume.

Yes — the prepaid lease is well-suited for homeowners who may sell their home. Because the lease is freely assignable with no credit check or buyer approval, transferring it to a new owner is just a signed form. Solar typically adds resale value, and the prepaid structure means there are no remaining payments for the buyer to assume.

The Sunergy Systems prepaid solar lease is paid in a single upfront payment, so refinancing in the traditional sense doesn't apply — there are no monthly payments to refinance and no outstanding balance to repay. If you have questions about ownership conversion or the lease structure, your Sunergy Systems consultant can walk you through the details.

The prepaid lease does not appear on your property title. Participate Energy may file a UCC-1 fixture filing to document ownership of the solar equipment on your roof, but this is not a lien on the home itself and does not affect title or your ability to sell, refinance, or pass the home through your estate.

Participate Energy typically files a UCC-1 fixture filing to document their ownership of the solar equipment installed on your roof. This is standard for third-party-owned solar — it identifies the panels and inverter as their property and is not a lien on your home itself. It does not affect your title or your ability to sell, refinance, or pass the home through your estate.

Yes. The prepaid solar lease through Participate Energy includes a voluntary Early Purchase Option that lets you take full ownership of your solar system before the lease term ends. Customers can exercise this option starting on the 6th anniversary of the System Installation Date and on any anniversary after that. To request a buyout, you provide Participate Energy with 30 to 90 days' notice.

The Early Purchase Option becomes available on the 6-year anniversary of your lease term and on any anniversary after that. You can also exercise it any time after year 6 if you're selling your home — though a home sale never requires a buyout, since the prepaid lease is freely assignable to the new owner with no credit check or approval. To start the buyout process, provide Participate Energy with a minimum 30 days' and maximum 90 days' notice.

At the time of your inquiry, the system is assessed to determine its current Fair Market Value (FMV). The FMV is then offset by the value of any remaining offsetting obligations Participate Energy owes you. In many cases, the resulting balance is zero or a small incremental amount — meaning you can take full ownership at little to no additional cost. The balance will never be less than $0; the most common outcome at year 6 or beyond is a low or zero buyout figure.

You have two options if you disagree with Participate Energy's FMV assessment. You can request a third-party appraisal at Participate Energy's cost, and the result of that appraisal will be used to set the buyout price. Or you can continue with the lease as-is and revisit a buyout in a future year. Because the lease is fully prepaid, there's no financial downside to waiting — you owe no future payments either way.

Many homeowners choose to remain in the prepaid lease even when they're eligible to buy out — because the lease itself has no future payments and includes meaningful long-term benefits. Equipment warranty coverage continues to be routed through Participate Energy, and at the end of the 25-year lease term Participate Energy covers the cost of removing the system if you'd like it removed. Exercising an Early Purchase transfers those responsibilities to you, so staying in the lease is often the more cost-effective choice.

Once the Early Purchase is complete, you own the solar system outright and Participate Energy's responsibilities under the lease terminate. Any remaining workmanship warranties from the original installer (Sunergy Systems) remain in place and transfer to you as the new owner of the system. From that point forward you handle any future maintenance, monitoring, and end-of-life decisions for the system.

At the end of the 25-year prepaid solar lease, you have three options: (1) extend the lease with Participate Energy, (2) purchase the system at fair market value (typically minimal at that point), or (3) request that Participate Energy remove the system at no cost to you. Most homeowners choose ownership or extension to keep the system producing free electricity for years to come.

Yes. At the end of the 25-year term, customers can request a lease extension with Participate Energy. Specific terms — length, fees, equipment refurbishment requirements — are determined at the time of extension based on the system's then-current condition. Many homeowners find extension is the most cost-effective choice once a system has fully paid for itself.

Sunergy Systems is your primary point of contact for any service or maintenance needs throughout the lease term. We handle warranty claims with manufacturers, dispatch service techs when needed, and coordinate with Participate Energy on any equipment-related decisions. You don't manage multiple vendors — Sunergy is the single point of contact.

You — the homeowner — are the primary monitor of your system's performance. Real-time and historical production are visible through the manufacturer's app (Enphase Enlighten, Tesla App, etc.), and we recommend checking it regularly. If you notice production that's lower than expected or a panel that has dropped offline, contact Sunergy Systems and we'll investigate. Sunergy Systems and Participate Energy do not proactively monitor your system on your behalf — reporting underproduction is the customer's responsibility.

Routine panel cleaning is generally not needed in the Pacific Northwest — Seattle's regular rainfall keeps panels clean. The prepaid lease does not include scheduled cleaning service. If a specific cleaning is needed (heavy tree sap, post-construction dust, etc.), it can be arranged through Sunergy Systems for a service charge.

Yes. Equipment repairs covered by manufacturer warranties (panels, inverters, batteries) are handled by Sunergy Systems at no cost to you — Sunergy manages the warranty claim and dispatches the repair tech. The Sunergy SolarClad workmanship warranty also covers installation-related issues. Issues outside warranty (like physical damage you cause) are quoted as service work.

The Sunergy Systems 10-year production guarantee — available to both prepaid lease and cash purchase customers — compares actual production to the modeled production from your proposal. If the system underproduces by more than the guarantee allowance, Sunergy compensates you for the shortfall as defined in the warranty. Customers are solely responsible for reviewing their monitoring data and reporting any underperformance to Sunergy so a claim can be filed. Participate Energy does not offer a production guarantee directly.

Yes — adding panels to an existing prepaid-leased system is possible, though it requires a contract amendment with Participate Energy and a new design from Sunergy Systems. Most homeowners avoid this by sizing their initial system for current and anticipated future loads (EVs, heat pumps, etc.). Talk to your Sunergy consultant about future-proofing during the design phase.

Yes. Adding a Tesla Powerwall 3 or Franklin aPower-S battery to an existing solar system can typically be done in a few weeks. The battery has its own separate 10-year prepaid lease (or can be purchased outright), and integrates cleanly with most existing solar systems. Sunergy Systems handles the design, install, and the necessary backup gateway.

Absolutely. Sunergy Systems installs Level 2 EV chargers — including the Tesla Wall Connector — as part of the same project or as standalone installations. Adding the EV charger during the solar install is often the most cost-effective approach, since the panel work and electrical labor can be combined.

If your roof needs significant repair or replacement during the lease term, Sunergy Systems handles temporary removal and reinstallation of the solar panels. The cost depends on the scope of the roof work and the size of the system. We coordinate with your roofer to minimize downtime and protect both the roof and the solar equipment.

Typically the homeowner pays the cost of removing and reinstalling the panels for re-roofing, since the roof work is not related to the solar equipment itself. To avoid this expense, Sunergy Systems recommends that your roof have at least 10 years of remaining life at the time of solar installation. Many customers with older roofs re-roof first, then install solar.

Major home damage during the lease is handled through your homeowners insurance for the home and equipment. Because Participate Energy is listed as a loss-payee on your policy, they receive notifications and any equipment-related insurance proceeds directly. If the home is uninhabitable or destroyed, the lease has provisions for early termination or system relocation. Sunergy Systems coordinates with your insurance adjuster and Participate Energy to handle the situation.

You should notify your insurance company when solar is installed on your home. As part of the lease agreement, Participate Energy requires lease customers to list Participate Energy as a loss-payee on their homeowner's insurance policy. Adding a loss-payee typically does not increase your insurance premium. Most insurers cover the panels as part of your home's structure with little or no premium change. Sunergy Systems provides the documentation your insurer needs.

In the unlikely event Participate Energy ceased operations, the lease and the underlying equipment ownership would typically be transferred to a successor entity. The lease terms — including no monthly payments and the freely-assignable home transfer — would survive the transition. Sunergy Systems remains your local installer regardless and continues to support service and warranty work.

Yes. The Sunergy Systems prepaid solar lease is available throughout the Puget Sound area, including PSE, Seattle City Light, Snohomish PUD, and Tacoma Power territories. Specific equipment options or sizing may vary slightly based on each utility's net-metering rules and interconnection requirements, all of which Sunergy Systems handles for you during the design phase.

The previous federal solar tax credit through ownership ended on December 31, 2025, and is no longer available to homeowners who purchase solar outright in 2026. The way to capture an up-to-30% reduction now is through a Sunergy Systems solar lease. The discount is built into the financing structure and applied at the very start of your project — no tax filing required, no waiting for tax season, and no need for tax liability to benefit. Talk to a Sunergy Systems consultant for current details.

The residential solar Investment Tax Credit for purchase and loan-financed systems ended at the end of 2025. Homeowners going solar in 2026 and beyond no longer have access to that credit through ownership. The new path to a 30% reduction is a Sunergy Systems solar lease, where the discount is applied to the cash purchase price upfront. There's no IRS form to file and no tax-liability requirement — the savings are built right into your lease.

Washington State continues to offer meaningful incentives in 2026: a retail sales tax exemption on solar equipment, a property tax exemption on the value solar adds to your home, and net metering with most major utilities — though future PSE net metering terms are still being determined. Combined with the up-to-30% discount off the cash purchase price available through a Sunergy Systems lease (applied upfront, no tax filing required), these incentives keep Washington a strong market for going solar.

Washington's primary production-based incentive, the Renewable Energy System Incentive Program (RESIP), is no longer accepting new applications — it was fully subscribed for PSE territory as of 2021. However, the state sales tax exemption on solar equipment and the property tax exemption for solar home value remain in effect, representing meaningful financial benefits for Washington solar customers.

No. The Washington State RESIP program closed to new applicants in 2021 for PSE territory when it reached state budget limits. Other utility territories may have closed at different times. If you are installing solar today, you are not eligible to enroll. Your Sunergy Systems consultant can help you understand what incentives are currently available in your specific utility territory.

PSE offers two programs that benefit solar and battery customers. The PSE FLEX program is a virtual power plant initiative that provides incentives to homeowners who install qualifying battery storage and allow PSE to dispatch the battery during peak demand events. PSE also offers an Enhanced Rebate that provides additional incentive value for qualifying battery storage installations. Direct cash rebates for solar-only installations are not currently offered. The primary PSE-related solar benefit has historically been net metering under Schedule 150, which closed to new applicants on December 31, 2025; replacement net metering terms are being finalized by the Washington UTC. Sunergy Systems can confirm current FLEX and Enhanced Rebate eligibility and amounts during your consultation.

Seattle City Light (SCL) offers net metering to residential solar customers, crediting excess generation at the retail rate. SCL has not reached the same net metering threshold issues as PSE and continues accepting new solar customers. SCL does not currently offer direct cash rebates, but the combination of net metering, Washington's sales tax exemption, and the property tax exemption makes solar financially attractive for SCL customers.

Snohomish PUD (SNOPUD) offers net metering to residential solar customers and has been working to expand solar access in its territory. Like other Washington utilities, SNOPUD customers benefit from the state sales tax exemption on solar equipment. Confirm the specific terms of SNOPUD's current net metering program with your installer or directly with SNOPUD, as program details can change.

Net metering is a billing arrangement that allows solar customers to send excess electricity to the grid and receive a bill credit equal to the retail rate they would otherwise pay for that electricity. Your meter effectively runs backward when your panels produce more than you use, and those credits offset electricity you draw from the grid at night or on cloudy days. Net metering remains available through most Washington utilities, though program terms are evolving.

PSE's net metering program under Schedule 150 was open to new applicants through December 31, 2025. For customers who connected under that schedule, PSE credits excess generation at the full retail rate monthly, and unused credits carry forward until March 31 each year when they expire. For new solar installations in 2026, PSE has committed to continuing to allow grid connection, but the specific compensation rate for exported energy is expected to change under a new rate schedule being developed through the state regulatory process.

PSE's net metering program (Schedule 150) was designed to remain available through December 31, 2025, at which point PSE would work with the Washington UTC to establish a replacement rate structure. PSE exceeded 100% of its state-mandated net metering obligation in June 2024 but chose to extend the program rather than abruptly changing terms. The replacement program has not yet been finalized, and PSE has committed to continuing to allow solar customers to connect to the grid while the new rate structure is determined.

Yes. Customers who connected their solar systems under PSE's Schedule 150 are expected to remain on those terms even after PSE transitions to a new rate structure for new customers. This is why many homeowners accelerated their solar installations before the end of 2025 — to lock in the favorable 1:1 retail rate net metering terms. Sunergy Systems can help you understand what options remain for new installations in your area.

Seattle City Light credits net metering customers at the retail electricity rate for excess generation, similar to PSE's program. Credits accumulate and can be applied to future bills, with annual true-up periods. SCL has more capacity under its net metering program than PSE and continues to accept new customers. The combination of SCL net metering and Washington's tax incentives makes solar financially attractive for Seattle homeowners.

Under PSE's Schedule 150, unused net metering credits expire on March 31 of each year per Washington State law — they cannot be cashed out or transferred when an account is closed. This is why proper system sizing matters: a system sized to match your annual usage ensures you use most credits before the expiration date rather than losing surplus generation.

Washington net metering programs do not allow cash payments for excess solar generation — you receive bill credits at the retail electricity rate instead. These credits offset what you owe on your electric bill but do not result in a check from the utility. At the end of the annual true-up period, unused credits typically expire. Sizing your system to match your annual energy use maximizes net metering value.

The Value of Solar study is a comprehensive analysis being conducted in Washington State to determine the true economic value of rooftop solar to the grid, utilities, and society. The study is intended to help utilities and the Washington UTC establish fair compensation rates for solar exports as current net metering programs evolve. Results are expected to inform what rate structure replaces PSE's Schedule 150 net metering program.

Several programs help lower-income homeowners access solar in King County and across Washington State, including utility-administered community solar, nonprofit initiatives, and programs tied to weatherization funding. Washington's solar industry association (WASEIA) tracks available programs statewide. Eligibility criteria and availability change frequently, so check with your utility or a trusted local installer for current options.

The previous federal solar tax credit for residential solar through ownership ended on December 31, 2025. Homeowners who purchase a solar system outright in 2026 no longer have access to that federal credit. The most accessible 30% reduction now comes through a Sunergy Systems solar lease, where the discount is applied to the cash purchase price upfront.

Washington State continues to offer two meaningful tax benefits in 2026: a retail sales tax exemption on solar equipment, which can save several hundred to a few thousand dollars depending on system size and county tax rate, and a property tax exemption on the value solar adds to your home so your assessed property value doesn't increase due to solar. Both apply to qualifying residential systems.

Yes. Washington State's property tax exemption on solar improvements is based on the system being a qualifying solar energy system installed on the property — not on whether the homeowner or a financing partner owns it. The added home value remains exempt from property tax assessment whether the system is owned, financed, or leased.

Yes. The Washington State retail sales and use tax exemption for solar energy systems applies based on the equipment being qualifying solar energy machinery and equipment. Both purchased and leased systems benefit from this exemption, and Sunergy Systems applies it automatically to qualifying installations during the proposal process.

Most Puget Sound utilities — PSE, Seattle City Light, Snohomish PUD — do not currently offer cash rebates for residential solar installations. Their primary contribution is net metering, which credits homeowners for excess generation. Sunergy Systems stays current on any new utility programs or pilot incentives and will identify any that apply to your project during your consultation.

No — but it's the largest single savings vehicle available now. Combined with Washington's sales tax exemption (saves several hundred to a few thousand dollars), the property tax exemption (no added property tax on the system value), and net metering (credits for excess production), the up-to-30% lease discount stacks for substantial total savings. Sunergy Systems itemizes every applicable saving in your proposal.

Most roofs in the Seattle area can support solar panels, but suitability depends on roof age and condition, orientation, pitch, shading from trees or nearby structures, and available roof space. South-facing roofs with minimal shade and a pitch between 15 and 40 degrees are ideal, but west- and east-facing roofs can still produce meaningful energy. Sunergy Systems conducts a thorough site assessment as part of the free quote process to evaluate your roof's solar potential.

Sunergy Systems recommends your roof have at least 10 years of remaining life at the time of solar installation. If your roof is within a few years of needing replacement, it's generally best to replace it before going solar to avoid the cost of removing and reinstalling panels for a future roof replacement. Sunergy Systems inspects your roof as part of the site assessment and will advise if roofing work should be done first.

Asphalt shingle roofs are the most common and easiest surface for solar installation in the Pacific Northwest. Metal roofs — including standing seam — also work very well and often allow mounting without penetrating the roofing material. Composition and architectural shingles are similarly compatible. Tile roofs (concrete or clay) can accommodate solar but may require specialized mounting hardware. Cedar shake roofs are more challenging but not impossible.

Yes, metal roofs are excellent candidates for solar. Standing seam metal roofs are particularly solar-friendly because panels can often be attached using clamps that grip the seam without penetrating the roof surface, eliminating waterproofing concerns. Metal roofs are also long-lasting, which aligns well with the 25-plus year lifespan of a solar system. Sunergy Systems has experience installing solar on a variety of metal roof types throughout the Puget Sound area.

Yes. Sunergy Systems can install solar on a variety of flat roofing materials using modern attachment and waterproofing methods designed specifically for the membrane or surface in place. We will often coordinate with the customer's roofer to ensure continuity of the existing roof warranty and to take special care in protecting the roof's integrity. Tilt angle and orientation are also carefully designed on flat roofs to maximize production in the Pacific Northwest's lower-sun-angle environment.

A typical solar panel measures about 3.5 by 6.5 feet and produces roughly 400 watts. A 7 kW system requires approximately 17 to 18 panels — roughly 400 to 450 square feet of unobstructed, well-oriented roof space. Sunergy Systems uses satellite imagery and on-site assessment to measure your usable roof area and design a system that fits your space and energy needs.

South-facing roof surfaces produce the most energy and are ideal for solar panels in Seattle. West-facing roofs typically produce 10 to 20 percent less but can be advantageous for capturing afternoon sun. East-facing roofs produce morning energy and are less ideal but still functional. North-facing surfaces are generally not recommended. Many homes have multiple roof surfaces that can be used in combination.

Yes, shading can significantly reduce solar panel output, especially with string inverters where one shaded panel reduces output of the entire string. Modern microinverters (like Enphase) or DC power optimizers allow each panel to operate independently, minimizing the impact of partial shading. During the site assessment, Sunergy Systems evaluates shading from trees, neighboring buildings, and other structures throughout the day and across seasons.

Yes. Solar panels generate electricity from daylight, not just direct sunlight, and continue producing energy on overcast days — typically at 10 to 25 percent of their clear-sky output. Seattle receives less annual sunlight than sunnier states, but the Puget Sound region has enough solar resource to make rooftop solar economically viable. Thousands of Sunergy Systems customers throughout greater Seattle generate meaningful energy year-round.

In the Puget Sound region, a properly installed solar system can generate roughly 900 to 1,200 kilowatt-hours (kWh) per kilowatt of installed capacity per year. A 9 kW system in Seattle might generate 9,000 to 10,800 kWh annually — enough to cover much or all of the average Washington household's electricity use.

PSE estimates that on average, 1 kW of solar installed in the Puget Sound region produces approximately 1,100 kWh of electricity per year. Your actual production will depend on roof orientation, pitch, shading, panel efficiency, and installation quality. Sunergy Systems provides site-specific production estimates in every proposal.

Significant year-round shading from large trees can reduce solar production enough to affect the financial case for installation. Trimming or removing a few trees can dramatically improve production in some cases. Sunergy Systems uses shading analysis tools during the site assessment to model exactly how existing trees affect your production potential and help you decide whether solar makes sense for your property.

A solar site assessment evaluates your home's solar potential before system design and pricing are finalized. It includes measuring available roof space, evaluating shading, assessing roof condition, reviewing electricity usage, and inspecting your electrical panel. Sunergy Systems includes a thorough site assessment in the free quote process — ensuring your system is designed correctly for your specific home rather than on generic assumptions.

Sunergy Systems generally does not install ground-mounted solar. Most Puget Sound homes are best served by roof-mounted systems, which deliver excellent production at a lower installed cost without the trenching, additional racking, and yard impact a ground-mount requires. If you have a unique site that you believe needs a ground-mount approach, reach out — there may be other Pacific Northwest installers better suited for that style of project.

Your home is likely a good candidate if you have a roof in reasonable condition with at least 10 years of life remaining, reasonable sun exposure on south-, west-, or east-facing surfaces, and an electricity bill that would benefit from reduction. Homes in PSE, SCL, or SNOPUD territory throughout the Puget Sound area generally qualify. The best way to find out is to request a free assessment from Sunergy Systems.

Yes, roof age is an important consideration. If your roof will need replacement within the next 5 to 10 years, it's generally advisable to replace it before installing solar to avoid the labor cost of removing and reinstalling the panels. Sunergy Systems inspects your roof during the site assessment and will advise if replacement should be done first to protect your investment.

If you need to replace your roof after solar is installed, the panels must be removed, the roof replaced, and the panels reinstalled — typically costing $1,500 to $3,500 or more depending on system size. This is one reason Sunergy Systems recommends addressing near-term roofing needs before going solar. Sunergy Systems can handle removal and reinstallation for their customers.

Townhomes and condos can sometimes accommodate solar, but it depends on roof ownership and homeowner association rules. If you own your roof exclusively, solar is usually possible. If the roof is shared common property, the HOA must approve. Sunergy Systems has helped many Seattle townhouse owners navigate this — start by reviewing your CC&Rs and reaching out to your HOA board.

There's no strict minimum, but a meaningful residential solar system usually needs at least 200 to 300 square feet of usable, mostly unshaded roof space. Smaller spaces can support smaller systems — Sunergy Systems can design a 2 to 3 kW system if that's all your roof allows. Even partial offsets can deliver real savings depending on your utility usage.

Most older Seattle homes can support modern solar panels, which weigh roughly 2 to 3 pounds per square foot — well within the load capacity of standard residential roof framing. Sunergy Systems performs a structural review during the design phase and engages an engineer if any reinforcement is needed. Homes with very old or damaged framing may require reinforcement before installation.

Sunergy Systems uses IronRidge Halo Ultragrip mounts (HUGS) instead of traditional flashings to create a watertight seal at every penetration. HUGS use a butyl-based gasket that compresses against the shingle to seal each attachment point — without the cracking, lifting, or aging that older flashing-based systems can experience over time. We no longer use traditional flashings on our installs. The result is a roof that is as watertight after installation as it was before — and our SolarClad warranty backs that up.

Solar systems can absolutely span multiple roof sections facing different directions. Modern microinverters or power optimizers manage each panel independently, so panels on different roof faces can produce optimally without dragging each other down. Sunergy Systems' design team models production for each roof section in your proposal.

Heavy moss or algae growth doesn't prevent solar installation, but Sunergy Systems may recommend roof cleaning before mounting panels — once panels are up, that section of roof is harder to access for moss treatment. We can discuss timing during your site visit and coordinate with a roof cleaning company if needed.

Solar panels installed by Sunergy Systems are rated to withstand wind speeds well above what Puget Sound typically experiences — most panels and racking systems are tested to 140+ mph. Mounting hardware is engineered specifically for the wind zone of your location. Coastal homes near Whidbey Island, Kitsap peninsula, or Edmonds waterfront are routinely served without issue.

Sunergy Systems does not install solar on manufactured homes. The roof structures, electrical service, and structural considerations on manufactured homes fall outside the scope of our standard residential installation. If you live in a manufactured home and are interested in solar, we recommend contacting an installer who specializes in that home type.

Yes — solar carports are a great option when roof space is limited or shaded. The carport structure provides covered parking while the panels generate electricity. Carports require more permitting and construction work than roof-mounted solar, so they cost more, but the energy production can be significant. Sunergy Systems can include a carport option in your proposal.

Solar panels work through the photovoltaic (PV) effect: when sunlight strikes the silicon cells in a solar panel, it excites electrons and causes them to flow, generating direct current (DC) electricity. This DC electricity flows to an inverter, which converts it to the alternating current (AC) electricity used by your home's appliances and the grid. Any electricity your panels produce that you don't use immediately can flow to the grid through net metering or be stored in a battery for later use.

Yes, every solar system requires an inverter. The inverter converts the direct current (DC) electricity produced by solar panels into the alternating current (AC) electricity that powers your home and the grid. The type of inverter — string inverter, microinverter, or string inverter with power optimizers — affects how the system handles shading, monitoring, and overall efficiency.

A string inverter is a single central inverter connected to a series of panels. This setup is simpler and often less expensive, but if one panel underperforms due to shading, it can reduce the output of the entire string. Microinverters are small inverters attached to each individual panel, allowing each panel to operate independently — improving performance under partial shading and enabling panel-level monitoring.

Enphase is the leading manufacturer of microinverters for residential solar. Enphase microinverters attach to the back of each individual solar panel, converting DC electricity to AC at the panel level. This approach improves performance in shaded conditions, simplifies system expansion, and provides detailed panel-level production monitoring through the Enphase Enlighten app. Sunergy Systems uses Enphase equipment on many of their installations.

Solar panels do not generate electricity at night because there is no sunlight to power the photovoltaic process. Homes with grid-tied solar systems draw electricity from the utility grid at night, just as they did before going solar. If you have net metering, credits earned during the day offset your nighttime grid usage. If you have a home battery, stored solar energy from the day can power your home at night.

Standard grid-tied solar systems automatically shut down during a power outage — to protect utility workers who may be working on the lines. This means without a battery, your solar panels will not power your home during a grid outage even if the sun is shining. Adding a battery like the Tesla Powerwall or FranklinWH allows your solar system to continue operating during an outage, providing backup power from stored energy.

Yes, grid-tied solar systems are designed with automatic shutdown (anti-islanding protection) that cuts off power from the panels when the grid goes down. This is a safety requirement to prevent backfeeding electricity onto utility lines where workers may be making repairs. The only way to maintain power during an outage is to have battery storage with islanding capability, such as the Tesla Powerwall or FranklinWH.

Net metering appears on your electric bill as a credit for excess electricity your solar system sent to the grid during the billing period. On months when your panels produce more than you use, your bill will show a credit that reduces the amount you owe, potentially to zero. In months where you use more than you produce, you'll draw on any accumulated net metering credits before being charged for additional grid electricity.

After going solar, your electric bill shows total electricity usage from the grid, the amount your system exported, and the net difference. If you're on net metering and exported more than you imported, you'll see a credit. You'll still typically owe a basic service charge each month. Most solar monitoring apps also show real-time and historical production data independent of your utility bill.

Modern solar systems include monitoring technology that tracks real-time and historical energy production. Enphase microinverter systems use the Enlighten platform, accessible via a smartphone app or web browser. Monitoring can also alert you if a panel or component is underperforming. Sunergy Systems sets up monitoring as part of the installation process.

Solar panel efficiency refers to the percentage of sunlight that a panel converts into usable electricity. Most modern residential panels have efficiencies ranging from 19% to 23%, with premium panels reaching slightly higher. Higher efficiency panels generate more electricity from a given roof area, which is especially valuable when roof space is limited.

Monocrystalline panels are made from a single crystal of silicon and are the most efficient and durable type, with efficiencies typically in the 20–23% range. Polycrystalline panels are made from multiple silicon fragments and are slightly less efficient (15–18%) but typically less expensive. The solar industry has largely shifted toward monocrystalline panels, and most panels installed by Sunergy Systems today are monocrystalline.

Sunergy Systems installs Hyundai, Silfab, and REC solar panels — three high-quality, tier-one manufacturers known for performance, durability, and strong warranty coverage. As a REC Gold Certified installer, Sunergy is authorized to install REC panels, which carry an industry-leading 25-year product warranty. Hyundai and Silfab also back their panels with strong manufacturer warranties. The specific panel recommended for your home depends on roof space, energy goals, and current pricing — your Sunergy Systems consultant will walk you through the options.

The number of panels depends on your electricity usage, roof space, and panel wattage. A typical Seattle-area home uses 10,000 to 12,000 kWh per year, which might require 20 to 30 panels of 400 watts each to cover fully. Your Sunergy Systems designer will analyze 12 months of your utility bills and your roof's characteristics to recommend the right system size.

System sizing is based primarily on your annual electricity consumption, found on your utility bills. A rule of thumb is to offset 80–100% of your annual usage, though the ideal percentage depends on your goals, available roof space, and financial considerations. Your Sunergy Systems energy consultant will review your bills, discuss your goals, and design a system that makes sense for your home and budget.

A kilowatt (kW) is a measure of power — the rate at which electricity is produced or consumed at any given moment. Your solar system size is expressed in kilowatts (e.g., an 8 kW system). A kilowatt-hour (kWh) is a measure of energy — the amount of electricity used or produced over time. Your monthly electric bill is measured in kWh, and your solar system's annual production is also expressed in kWh.

Solar production in Seattle varies significantly by season. Summer months — especially June and July — see the longest days and highest sun angles, with production potentially two to three times higher than winter months. December and January have the lowest monthly production of the year. Annual production estimates account for this seasonal variation, and net metering allows summer surpluses to offset winter deficits.

A solar production estimate projects how much electricity your proposed solar system will generate over a year, expressed in kilowatt-hours. It is calculated based on your roof's orientation and tilt, local solar irradiance data, panel efficiency, expected system losses, and system size. Sunergy Systems provides site-specific production estimates in every proposal, along with projections of how that production compares to your current electricity usage.

DC-coupled systems run direct current from the panels through a single inverter that also handles battery charging. AC-coupled systems use microinverters or string inverters at the panels to convert to AC right away, with the battery's inverter handling charge and discharge separately. Both designs work well in the Pacific Northwest. When solar is paired with a Tesla Powerwall 3 or Franklin aPower-S battery, DC-coupling can deliver significant equipment and installation savings because the battery's built-in inverter handles both solar and battery duties — eliminating the need for a separate solar inverter. Your Sunergy Systems consultant will recommend the right architecture based on your goals.

It depends on the inverter type. With string inverters, panels are wired in series to build up to a higher voltage. With microinverters, each panel has its own inverter and panels effectively operate in parallel. Sunergy Systems uses microinverters on most residential installs because they handle shade and panel-level issues better.

Rapid shutdown is a safety feature that lets firefighters quickly de-energize a solar system from the roof during emergencies. It is required by the National Electrical Code for new installations and is enforced by Washington State and local jurisdictions. Modern microinverter systems and most string inverter systems are rapid-shutdown compliant out of the box.

A solar combiner box is a junction box where multiple solar panel circuits are combined into a single output line that runs to the inverter. It's commonly used with string inverter systems. Microinverter systems usually don't need a combiner box because each panel feeds AC directly to a trunk cable, simplifying the wiring.

A solar disconnect is a switch that allows you, an electrician, or a utility worker to manually shut off the solar system from the grid. Code requires a clearly labeled, accessible disconnect — usually mounted near your main electrical panel or meter. Flipping it isolates your solar from the grid for service or emergencies.

Solar and a backup generator can coexist, but with caveats. Most grid-tied solar inverters automatically shut off during a utility outage and can't run alongside a generator unless the system includes battery storage or specialized hardware. If you have a whole-home generator, Sunergy Systems can advise on adding a battery to bridge solar and generator operation.

A Sunergy Systems production estimate models how many kilowatt-hours your system is expected to generate each month and year, factoring in panel orientation, tilt, shading, local weather data, and panel and inverter efficiency. The estimate is generated using industry-standard software (PVWatts, Helioscope) and is the basis for projecting your savings.

Solar panels actually become slightly less efficient as they get hotter — around a 0.3 to 0.5 percent drop in output per degree above the standard test temperature of 25°C (77°F). On a hot Seattle summer day, panel temperatures can reach 60 to 70°C, modestly reducing output. They won't be damaged, and Pacific Northwest summers rarely push them outside design limits.

A solar production guarantee is a contractual promise that the system will produce a certain minimum amount of energy over time; if it underproduces, the warranty covers the difference. Sunergy Systems offers a 10-year production guarantee to all customers — both prepaid lease and cash purchase — as part of the SolarClad warranty. Participate Energy does not offer a production guarantee directly; the production guarantee comes from Sunergy. Customers are responsible for reviewing their monitoring data and reporting any underproduction to Sunergy.

Energy is measured in kilowatt-hours (kWh), where 1 kWh is the energy used by a 1,000-watt appliance running for one hour. A typical Seattle home uses 800 to 1,200 kWh per month. A 7 kW solar system in Seattle generates roughly 7,000 to 8,000 kWh per year, depending on shading and orientation.

Whether to add a battery depends on your priorities. If backup power during grid outages is important — for medical equipment, keeping lights on during Pacific Northwest windstorms, or peace of mind — a battery is well worth considering. If your primary goal is simply reducing your electric bill and outages are infrequent, solar alone may deliver the best financial return without the added cost of battery storage.

A home battery storage system is a large rechargeable battery installed in or near your home that stores electricity generated by your solar panels for use later. During the day, excess solar energy charges the battery. At night, during a grid outage, or during peak utility rate hours, the battery discharges to power your home. Modern home batteries like the Tesla Powerwall and FranklinWH are compact, quiet, and designed to integrate seamlessly with residential solar systems.

The Tesla Powerwall is a wall-mounted lithium-ion battery that stores electricity for home use. It connects to your solar system and charges automatically when panels produce more energy than your home is using. During outages, the Powerwall detects the loss of grid power and switches your home to battery power within milliseconds. Through the Tesla app, you can monitor the battery's charge, set preferences for when it charges and discharges, and see your home's energy flows in real time.

Yes. Sunergy Systems is a Tesla Powerwall Certified Installer, meaning they have completed Tesla's training and certification requirements. This ensures your Powerwall is installed to Tesla's standards and your warranty is fully supported. Sunergy Systems can install Powerwall alongside a new solar system or as an addition to an existing solar installation.

FranklinWH is a home battery system known for its modular design and whole-home backup capability. FranklinWH batteries use lithium iron phosphate (LFP) chemistry, known for safety, long cycle life, and performance stability across temperature ranges. The system can be stacked to increase storage capacity and is designed to power your entire home during an outage. Sunergy Systems is an authorized FranklinWH installer.

Yes. Sunergy Systems installs both Tesla Powerwall and FranklinWH battery systems, giving homeowners a choice between two leading home energy storage products. During your consultation, Sunergy Systems can walk you through the differences between the two systems and help you determine which is a better fit for your home's layout, energy needs, and backup power goals.

The duration depends on the battery's storage capacity and how much electricity your home uses during the outage. A single Tesla Powerwall 3, with 13.5 kWh of usable storage, might power essential loads — lights, refrigerator, phone chargers — for 12 to 24 hours. If your solar panels are generating electricity during the day, the battery can recharge and extend backup duration significantly.

The number needed for whole-home backup depends on your home's energy consumption and how long you need backup to last. For average Seattle-area homes, one or two Tesla Powerwall 3 units (13.5 kWh each) combined with ongoing solar charging can provide meaningful whole-home coverage during typical outages. Sunergy Systems will size your battery system based on your actual usage and backup goals.

The Tesla Powerwall 3 is the current generation, with 13.5 kWh of usable storage but a significantly higher continuous power output of 11.5 kW compared to the Powerwall 2's 5 kW. The Powerwall 3 also integrates a solar inverter, simplifying installation when paired with a new solar system. The Powerwall 2 is no longer sold new and has been superseded by the Powerwall 3. Sunergy Systems installs the current Powerwall 3.

Yes, in most cases a home battery can be added to an existing solar system. The process and cost depend on your current inverter type and the battery being added. Some batteries integrate more easily with specific inverter brands, and some older systems may require additional equipment for battery compatibility. Sunergy Systems can assess your existing system and recommend the best retrofit battery option.

The installed cost of a Tesla Powerwall 3 in Washington State typically ranges from $12,000 to $16,000, depending on installation complexity, whether electrical panel work is needed, and local permit fees. This cost may be higher if you're adding multiple units or retrofitting to an older solar system.

The 30% federal credit for home battery storage tied to ownership ended along with the broader residential ITC at the end of 2025. In 2026, homeowners adding a battery alongside solar through a Sunergy Systems prepaid lease can capture an up-to-30% discount on the cash purchase price, applied at the start of financing — no tax filing required. The battery lease runs 10 years and the solar lease runs 25 years; each is paid as a single upfront payment with no monthly payments. Talk to your Sunergy Systems consultant about the specific savings on your project.

Islanding is the ability of a home battery system to disconnect from the utility grid and power your home independently during a grid outage. Most modern residential batteries, including the Tesla Powerwall, have automatic islanding capability — when they detect a grid failure, they seamlessly switch to battery power and continue operating alongside your solar panels. This is what enables your home to function normally during an outage.

Yes, if your battery has islanding capability, your solar panels can continue to charge the battery during a grid outage. When the grid goes down, the battery system disconnects and creates a self-contained microgrid for your home. During the day, your solar panels generate electricity that powers your home and recharges the battery simultaneously — making solar-plus-battery a powerful combination for extended outage resilience in the Pacific Northwest.

For homeowners who experience regular power outages — especially during Pacific Northwest windstorms and atmospheric river events — battery storage provides significant peace of mind and practical value. From a purely financial standpoint, the payback period for a battery is longer than for solar alone because Washington utilities don't currently have widespread time-of-use pricing. However, as utility rates rise and TOU pricing becomes more common, the financial case for batteries will strengthen.

A critical load panel (also called a backup panel or subpanel) contains only the circuits you want to power during a grid outage. When the grid fails and your battery activates, it powers only these circuits rather than your entire home, allowing you to protect the most important loads — refrigerator, lights, internet, phone charging — while conserving battery capacity. Some battery systems, like the Powerwall 3, support whole-home backup without a separate critical load panel.

The standard Tesla Powerwall warranty is 10 years. Tesla guarantees the Powerwall will retain at least 70% of its rated 13.5 kWh energy capacity over those 10 years, meaning a fully charged Powerwall is guaranteed to deliver a minimum of approximately 9.5 kWh during a grid outage at the end of the warranty term. Sunergy Systems handles warranty claims directly with Tesla on behalf of customers.

Yes. When the utility grid goes down, the Powerwall automatically takes over within milliseconds — most homeowners experience only a brief flicker, if anything. A required Tesla Backup Gateway isolates your home from the grid during an outage, which protects utility lineworkers from solar power back-feeding the lines and is automatic. If the sun is shining during the outage, your solar panels will continue to charge the Powerwall and supply your home directly.

Powerwall charging time varies significantly with weather, season, and system size. In ideal summer conditions with no household loads and a 7.6 kW solar system, a Powerwall can fully charge in roughly 2 hours. In a typical Pacific Northwest December — short days, heavy overcast — full recharge from solar alone can take 2 to 3 days. The Powerwall can also be configured to charge from the grid as a fallback during extended low-production periods.

How much you can power and for how long depends on the loads you include and your consumption habits. A single Powerwall (13.5 kWh usable) can run roughly ten 100-watt LED equivalents for about 13 hours, or keep a refrigerator, lights, internet, and phone charging running through a typical Puget Sound outage. High-demand loads like electric resistance heat, electric ranges, or EV chargers will deplete a Powerwall quickly. Pairing 2 or more Powerwalls — or combining with a critical-load panel — lets you customize backup to match your priorities.

Technically no, but in Washington State a battery without solar offers limited financial benefit. Unlike states with high time-of-use rate variation (such as California), Washington utilities don't reward load-shifting from on-peak to off-peak hours, and net metering already lets you bank excess solar generation on the grid as a credit. Where a battery shines is backup power during outages and self-consumption of your own solar energy. Through a Sunergy Systems lease, battery storage paired with solar can also benefit from the up-to-30% discount off the cash purchase price, applied upfront.

Modern lithium-ion home batteries like Tesla Powerwall and FranklinWH typically have 10-year warranties and an expected useful life of 10 to 15+ years. Lithium iron phosphate (LFP) batteries used by FranklinWH may last longer due to their robust chemistry. Battery capacity gradually declines over time — most warranties guarantee 70% capacity at the 10-year mark.

Yes. Tesla Powerwall and FranklinWH batteries are designed for safe indoor or outdoor installation in residential garages, mechanical rooms, or exterior walls. They are rated for the temperature ranges typical of Pacific Northwest homes and include built-in safety features like thermal management and electrical isolation. Sunergy Systems follows local code for placement and clearances.

A home battery connects to your electrical panel through a gateway and either a critical-load subpanel or a whole-home backup configuration. The gateway monitors grid status and switches to battery power when the utility goes out. Sunergy Systems handles the panel work, gateway installation, and any required service upgrades as part of your project.

Yes. Both Tesla Powerwall and FranklinWH systems are designed to be expandable. You can add additional Powerwalls (up to 4 typically) or FranklinWH aPower units to your existing system. Sunergy Systems can design your initial install with future expansion in mind to keep costs lower when you add capacity.

If you own your battery outright, it stays with the home and transfers as part of the property — adding to resale value. If your battery is part of a Sunergy Systems prepaid 10-year battery lease, the lease is freely assignable to the new homeowner — no credit check, no approval process — and because it's prepaid there are no remaining payments for the buyer to assume. In rare cases batteries can be removed and reinstalled, but the cost is significant.

Tesla Powerwall is whisper-quiet during normal operation. The cooling fan can produce a low hum during heavy charge or discharge cycles, similar to a quiet refrigerator. Most homeowners barely notice it. Tesla rates the Powerwall at less than 50 decibels under load — quieter than typical conversation.

Yes, but with planning. Heat pumps are typically large loads, especially on startup. A single Powerwall may struggle with a whole-home heat pump on a cold winter night. Two or more Powerwalls and a properly configured backup panel make heat pump operation during outages reliable. Sunergy Systems sizes battery storage based on your specific backup goals.

Tesla Powerwall is a single, large battery (13.5 kWh) with a built-in inverter, often the most cost-effective per kWh of storage. Enphase IQ Batteries are modular — you start small (3.5 to 5 kWh per unit) and stack as needed. Sunergy Systems primarily installs Tesla Powerwall and FranklinWH; Enphase batteries are most often paired with Enphase microinverter systems.

The Sunergy Systems prepaid battery lease through Participate Energy runs 10 years, matching the standard battery warranty period. Like the solar lease, the battery lease is paid in full at the start in a single upfront payment — there are no monthly payments at any point. You get full use of the battery's storage and backup capacity for the entire 10-year term, and the lease is freely assignable to a new homeowner if you sell — no credit check or approval process required.

In Puget Sound, the most active utility-side incentive is from PSE. PSE's FLEX program offers incentives to homeowners who install qualifying battery storage and allow PSE to dispatch the battery during peak demand events. PSE also offers an Enhanced Rebate that provides additional incentive value for qualifying battery installations. Seattle City Light and Snohomish PUD do not currently offer direct cash rebates for residential solar or batteries. Sunergy Systems will confirm current eligibility and any applicable rebate amounts during your consultation.

From signing a contract with Sunergy Systems, the typical timeline to a fully operational solar system is 8 to 14 weeks. This includes system design and engineering (1–2 weeks), permit application and approval (2–6 weeks), equipment procurement and scheduling (1–3 weeks), and the physical installation itself (1–2 days). Utility interconnection approval can add additional time after installation. Sunergy Systems manages the entire process and keeps you informed at each step.

The Sunergy Systems installation process begins with a free consultation and site assessment, followed by a custom system design and proposal. Once you sign, the team handles permit applications and utility interconnection paperwork. When permits are approved, the installation crew installs the racking, panels, inverter, and wiring — typically in one to two days. After installation, a city inspector visits, and then Sunergy Systems submits the final interconnection request to your utility to receive permission to operate.

A typical residential solar installation is completed in one to two days. A crew of two to four installers mounts the racking, installs and wires the panels, and connects the inverter and monitoring equipment. Electrical work inside the home — including connecting to your main panel — is also completed during this time. Larger systems or homes with complex roofs may take an additional day.

Solar installations in Seattle and throughout King County require a building permit, which includes electrical and structural review. Sunergy Systems handles all permit applications on your behalf, including preparing required engineering drawings and documentation. Permit fees vary by jurisdiction and are typically included in the total system cost quoted by Sunergy Systems.

Sunergy Systems handles all permits on your behalf — preparing engineering drawings, submitting applications to the local building department, coordinating the inspection, and filing the interconnection application with your utility. Homeowners typically need to provide access for the inspection and sign certain utility interconnection documents. The permit management process is fully handled by Sunergy Systems.

Utility interconnection is the formal process of connecting your solar system to the utility grid. Sunergy Systems submits an interconnection application to your utility (PSE, SCL, or SNOPUD) after the installation is complete and inspected. The utility reviews the application, may conduct its own inspection, and then issues Permission to Operate (PTO). Once you receive PTO, you can switch on your solar system.

PSE interconnection approval for residential solar typically takes 2 to 6 weeks after the installation is complete and locally inspected, though timelines vary depending on PSE's application volume. Sunergy Systems submits the interconnection application promptly after your local inspection passes and follows up with PSE to keep the process moving. Your panels are installed but cannot be turned on until PSE grants permission to operate.

After the physical installation, Sunergy Systems coordinates the city or county inspection. Once the inspection passes, they submit the utility interconnection application. When the utility grants Permission to Operate, Sunergy Systems notifies you and the system is switched on. You'll receive instructions for monitoring your system and contacts for any post-startup questions.

You or an authorized adult should be present at the start of the installation day to let the crew in and address any questions. For the remainder of the installation, your presence is not required. The installation crew will need access to your electrical panel and roof, and will need to briefly shut off power to your home when connecting the solar system to your main panel.

When done correctly by an experienced installer, solar installation does not damage your roof. Sunergy Systems uses professional mounting hardware and proven waterproofing techniques that maintain the roof's weathertight integrity. Sunergy Systems backs their installation with a workmanship warranty that covers any roof leaks attributable to the solar installation.

Washington State law (RCW 64.38.055) prohibits homeowners associations from prohibiting or unreasonably restricting the installation of solar panels on owner-occupied properties. HOAs may impose reasonable aesthetic requirements, but cannot outright ban solar or impose conditions that make solar impractical or significantly more expensive. Sunergy Systems can help you understand and assert your legal rights if your HOA resists.

Washington's solar access law (RCW 64.38.055) protects homeowners' rights to install solar energy systems on their properties. It prohibits HOA covenants that effectively ban solar or impose unreasonably burdensome requirements. The law allows HOAs to impose reasonable aesthetic conditions but requires that those conditions not significantly increase cost or reduce efficiency — giving Washington homeowners strong protections when dealing with HOA pushback.

During the initial site visit, a Sunergy Systems consultant evaluates your roof condition, measures usable space, checks shading throughout the day, inspects your electrical panel and main service, reviews your utility bills, and discusses your goals. The visit usually takes 60 to 90 minutes and forms the basis of your custom proposal.

There may be brief power interruptions during a solar installation — typically when the electrician ties the new system into your electrical panel. Sunergy Systems coordinates these outages with you and tries to keep them as short as possible (usually under an hour). On most installs, the rest of the day's work happens with normal power.

Permission to Operate (PTO) is the formal approval from your utility company that your solar system is safe to connect to the grid and turn on. It comes after the city or county passes the inspection. Until PTO is issued, your system is required to remain off. Sunergy Systems manages this process and notifies you when PTO is granted.

Yes. Most insurers ask to be notified when you add solar so they can adjust your dwelling coverage to account for the system's value. Solar panels are typically covered as part of your home's structure, but premiums and coverage limits may change. If you go solar through the Sunergy Systems prepaid lease, Participate Energy requires you to list them as a loss-payee on your homeowner's insurance policy as part of the lease agreement — this typically does not increase your premium. Sunergy Systems provides the documentation your insurer needs.

A Sunergy Systems solar proposal includes recommended system size, panel and inverter selection, projected annual production in kWh, a custom roof layout, your projected savings versus current utility costs, all financing options including the up-to-30% lease discount, a clear price breakdown, warranty details, and a project timeline.

Washington State requires licensed electricians for grid-tied solar work, so a fully DIY install is not legal for grid connection. Some homeowners do their own racking and physical installation and hire a licensed electrician for the wiring and interconnection. Most homeowners find a turnkey installer like Sunergy Systems is faster and avoids permitting headaches.

The electrical inspection by your local jurisdiction (city or county) verifies that the solar installation meets the National Electrical Code, that conductors are correctly sized, that grounding and bonding are proper, that disconnects are accessible and labeled, and that all components are listed for the application. Sunergy Systems prepares for the inspection and accompanies the inspector when needed.

Your solar inverter is typically installed near your main electrical panel — often in the garage, basement, or on an exterior wall. With microinverter systems, there's no central inverter; each panel has its own small unit on the roof. Sunergy Systems determines the best location during the design phase based on your home's layout.

Sometimes. Older 100-amp panels or panels with limited spare breaker capacity may need to be upgraded to safely accommodate a solar interconnection. Sunergy Systems evaluates your panel during the site visit and includes any required upgrade in the proposal — there are no surprise charges later.

Panels are mounted to your roof using a rail-and-mount racking system. Mounts are bolted into the roof's structural rafters or trusses using IronRidge Halo Ultragrip mounts (HUGS) — a butyl-gasketed roof attachment that creates a long-lasting, watertight seal at every penetration. We use HUGS instead of traditional flashings on every install. Aluminum rails are attached to the mounts, and panels clamp onto the rails. The result is a strong, watertight, low-profile installation.

Solar panels require very little maintenance. The primary task is keeping them clean enough to allow maximum sunlight to reach the cells — in most cases, rainfall is sufficient. Periodic visual inspection a few times a year to check for obvious damage or debris accumulation is good practice. Your monitoring system will alert you to any significant drops in production that might indicate a problem.

In the Pacific Northwest, regular rainfall generally keeps solar panels clean enough for good performance. However, moss and algae can accumulate on panels in shaded or damp environments, and a professional cleaning every year or two may be beneficial. Avoid pressure washing panels directly; a gentle rinse with a garden hose and soft brush is often sufficient.

Rain does a good job of cleaning solar panels in Seattle for most of the year, naturally washing away dust, pollen, and light soiling. However, heavy debris such as leaves, pine needles, or bird droppings may need to be manually removed. Seattle-area solar owners generally need to worry much less about panel cleaning than homeowners in dry, dusty climates.

Modern solar panels are warrantied to last 25 to 30 years, but many continue producing electricity well beyond that timeframe. Panel efficiency degrades slightly over time — typically about 0.5% per year. This degradation is accounted for in Sunergy Systems' production estimates. The overall system may last 30 to 40 years or more with proper care.

As a REC Gold Certified installer, Sunergy Systems can offer customers access to REC's 25-year product warranty on REC panels, which covers both the product and performance guarantees. Other panel manufacturers used by Sunergy Systems also offer 25-year performance warranties. In addition, Sunergy Systems provides their own workmanship warranty covering installation quality and roof penetration integrity.

Sunergy Systems' SolarClad warranty is their comprehensive warranty program that stands behind every installation they complete. It covers workmanship and installation quality, providing customers with confidence that any issues arising from the installation itself will be addressed by Sunergy Systems. For full details on what SolarClad covers and for how long, visit sunergysystems.com/solarclad or ask your Sunergy Systems consultant.

If your solar panels are physically damaged — by hail, falling debris, or other events — contact your homeowner's insurance first, as most policies cover solar panels as part of your home's structure. Also contact Sunergy Systems to assess the damage and determine whether it constitutes a warranty claim or an insurance claim. Sunergy Systems can assist with the assessment and coordinate any needed repairs or replacements.

Inverters are covered by manufacturer warranties — typically 10 to 25 years depending on the type and brand. Enphase microinverters carry a 25-year warranty. If your inverter fails within the warranty period, the manufacturer will repair or replace it. Sunergy Systems can assist with inverter warranty claims and replacement for systems they have installed.

Your monitoring system is your first tool for identifying underperformance. If your production is significantly lower than expected, or if your monitoring app shows a panel that has dropped offline, that's a signal to investigate. Sunergy Systems can perform a system review to determine whether the issue is a shading change, a faulty component, a wiring problem, or a panel defect.

For systems with Enphase microinverters, Sunergy Systems uses the Enphase Enlighten platform, accessible via the Enlighten app on iOS and Android. This app shows real-time and historical production data, individual panel-level performance, and system health alerts. For Tesla Powerwall systems, the Tesla app provides battery and production monitoring. Sunergy Systems sets up and activates monitoring as part of every installation.

Snow is not a major issue for most Puget Sound-area solar owners. The Seattle area rarely experiences significant snowfall, and mild temperatures typically mean snow melts off panels quickly. In most cases, you should allow snow to melt and slide off naturally rather than attempting to remove it, which risks damaging the panels or injuring yourself on a snowy roof.

If your solar system stops working or you notice a significant drop in production, contact Sunergy Systems directly. As your installer, they are your first point of contact for troubleshooting and warranty service. They can remotely access your monitoring data in many cases to diagnose the problem before dispatching a technician. For equipment-specific issues, Sunergy Systems will coordinate with the manufacturer for warranty claims.

Solar systems generally don't need annual professional inspections, but Sunergy Systems recommends a visual check once a year and reviewing your monitoring app at least monthly. Microinverter-level monitoring tracks each panel individually, and it's the customer's responsibility to review the data regularly and report any concerns. If you notice unexpected drops in production, water staining, or visible damage, contact Sunergy Systems' service team.

The Sunergy Systems workmanship warranty (SolarClad) covers the labor of the installation — including roof penetrations, mounting hardware, and electrical work — for the duration specified in your contract. If a covered issue arises, Sunergy Systems repairs it at no additional cost. Panel and inverter manufacturer warranties run separately and cover the equipment itself.

Most solar panels are tested to withstand hail up to 1 inch in diameter at 50 mph — well above what Pacific Northwest homes typically experience. Hail damage that does occur is usually covered under your homeowners insurance policy as part of your roof coverage. Notify your insurer of solar so they can update your dwelling coverage accordingly.

Yes — most homeowners policies cover roof-mounted solar panels as part of the home's structure. You should notify your insurance company when you install solar so they can adjust your dwelling coverage to reflect the added value. Some insurers charge a small premium increase, while others include the coverage at no additional cost. If your system is on a Sunergy Systems prepaid lease, Participate Energy must also be listed as a loss-payee on your policy — typically with no premium impact.

Replacing a single panel involves disabling that panel's microinverter or its section of the string, removing the clamps holding the panel to the rails, sliding it out, and installing the replacement. With microinverter systems, only the affected panel's circuit is offline during the work — the rest of the system keeps producing.

Signs include consistently lower production from a specific panel (visible in your monitoring app), visible cracks or browning on the panel surface, water intrusion behind the glass, or hotspot warnings from microinverter monitoring. Sunergy Systems' service team can diagnose remotely in many cases and dispatch a tech if needed.

Yes — this is one of the most common solar issues in the Pacific Northwest. Squirrels and rats can chew wiring under panels and nest in the warm space between panels and roof. Critter guard — a mesh screen around the perimeter of the array — prevents this. Sunergy Systems offers it as an option on every install.

Critter guard is a thin metal mesh that wraps around the perimeter of your rooftop solar array, sealing off the gap between panels and roof so squirrels, raccoons, and rats can't get under. Most Sunergy Systems customers in wooded Seattle neighborhoods opt for it. It's a small added cost that protects your investment.

Clearing snow off rooftop solar in Seattle is rarely necessary — heavy snow events are infrequent and panels typically melt snow off within a day or two. If you do want to clear them, use a soft-bristle roof rake from the ground (never go on the roof). Don't use metal tools or hot water, which can crack panels.

Light pollen has minimal impact and rinses off with rain — Seattle's regular rainfall means panels are usually self-cleaning. Tree sap is stickier and can attract dust over time, slightly reducing output in tree-heavy areas. If you're surrounded by sap-dropping trees, periodic professional cleaning every 2 to 3 years is worth considering.

Sunergy Systems was founded in Seattle in 2005, giving them more than 20 years of experience in residential solar installation in the Pacific Northwest. This longevity is significant in an industry where many companies have come and gone. Their long track record reflects deep expertise in Washington's unique solar environment, utility landscape, and regulatory requirements.

Yes, Sunergy Systems is a locally based company headquartered in Seattle, Washington. Founded in 2005, they have focused exclusively on the Puget Sound region throughout their history. Being a local company means their team understands the Pacific Northwest climate, the local utilities (PSE, SCL, SNOPUD), Washington State incentives and regulations, and the specific needs of Pacific Northwest homeowners.

Sunergy Systems stands out for 20-plus years of experience in the Pacific Northwest, an employee-owned structure that aligns the team's interests with customer satisfaction, NABCEP certification, REC Gold Certified Installer status, Tesla Powerwall Certified Installer designation, and a track record of more than 3,000 residential solar installations. They have won Best in the Pacific Northwest awards from The Seattle Times in 2023, 2024, and 2025.

Yes. Sunergy Systems is an employee-owned company, meaning the people who work there have a direct stake in the business's success. This ownership model creates a stronger culture of accountability, quality, and customer service. For homeowners, this means you're working with a team that has every reason to get your installation right and support you well after the job is done.

Sunergy Systems serves the greater Puget Sound region, including the Greater Seattle Area, Olympia and South Sound, Kitsap County (including Bremerton and Bainbridge Island), and the Mount Vernon and Skagit Valley area. They work in PSE, Seattle City Light, and Snohomish PUD utility territories.

Yes. Sunergy Systems holds NABCEP (North American Board of Certified Energy Practitioners) certification, the gold standard for solar installation professionals. NABCEP certification requires rigorous training, experience, and examination to obtain. It is widely recognized by the industry, utilities, and building departments as a mark of professional competence and commitment to quality installation.

Yes. Sunergy Systems is a REC Gold Certified Installer, one of the highest certification levels in the REC installer network. This means Sunergy Systems has met REC's requirements for installation quality, training, and customer service. Customers who install REC panels through Sunergy Systems can access REC's industry-leading 25-year product warranty.

Yes. Sunergy Systems is a Tesla Powerwall Certified Installer, meaning they have completed Tesla's training and certification process. This ensures your Powerwall is installed to Tesla's specifications and your warranty is fully supported. Not all solar installers are certified to install Powerwall, making this certification an important differentiator.

As of their most recent reporting, Sunergy Systems has installed more than 3,000 solar power systems in the Puget Sound region, representing 15 megawatts of clean energy generation capacity. This is a substantial track record that few local solar installers can match.

Sunergy Systems has been recognized by The Seattle Times as Best in the Pacific Northwest in the solar installer category, winning Silver in 2023, and Gold in both 2024 and 2025. These awards reflect the company's strong reputation for quality and customer satisfaction in the competitive Puget Sound solar market.

Getting a free solar quote from Sunergy Systems is easy — request one through the form at sunergysystems.com/free-quote, or call their office directly. The process starts with a brief conversation about your energy goals and a review of your electricity usage, followed by a site assessment and a detailed, no-obligation proposal showing the proposed system, projected production, costs, and financial analysis.

Sunergy Systems offers key advantages over large national solar companies: deep knowledge of local utilities, permit processes, and the Pacific Northwest solar environment; greater accountability and easier post-installation support; and their own trained crews rather than subcontractors. As a local, employee-owned company with 20-plus years of experience, they bring a level of care and local expertise that national companies typically cannot match.

Choosing a local installer like Sunergy Systems means working with a company that deeply knows Seattle's utilities, local permit requirements, and the Pacific Northwest climate. Local companies are easier to reach for service calls, warranty work, and questions after installation. They are also invested in their local reputation in a way that large national companies may not be. When you choose Sunergy Systems, you're supporting an employee-owned local business whose team members live and work in your community.

Employee-owned means Sunergy Systems' team members are also owners of the company through an Employee Stock Ownership Plan (ESOP). This aligns the team's incentives with customer outcomes — when customers are happy and the company succeeds, employee-owners benefit. It's part of why Sunergy Systems has consistently high customer satisfaction and low employee turnover.

Sunergy Systems is headquartered in Seattle, Washington and has been serving the Puget Sound region since 2005. Being local means our team knows the local utilities, permitting jurisdictions, weather patterns, and building stock intimately — and that we're easy to reach for service after the install.

Yes. While our website focuses primarily on residential solar, Sunergy Systems has installed commercial systems for businesses, multifamily properties, nonprofits, and public buildings throughout the Puget Sound region. Commercial projects have different financing, incentive, and design considerations — contact us to discuss your business or organization's solar opportunity.

Sunergy Systems' consultation starts with a phone call or video meeting to understand your goals, followed by a free in-home or virtual site assessment. From there we prepare a custom proposal with system design, savings projections, and financing options. There's no obligation, no high-pressure sales tactics — just clear information so you can decide.

Sunergy Systems' website includes a portfolio of past projects across the Puget Sound region, with system sizes, locations, and customer testimonials. We're also happy to put prospective customers in touch with installed customers in their neighborhood for direct conversations about the experience.

Yes. Sunergy Systems installs Level 2 EV chargers (including Tesla Wall Connector and other major brands) as standalone projects or alongside solar installations. Pairing the EV charger with solar work often saves on permitting and electrical labor since the panel work is being done anyway.

Sunergy Systems' service team aims to respond to non-emergency service requests within 1 to 2 business days and to schedule on-site visits within 1 to 2 weeks depending on the issue and time of year. Customers are solely responsible for reviewing their monitoring app and reporting any underproduction or system issues so Sunergy can investigate.

Sunergy Systems' installation crews are our own employees, not subcontractors. This is rare in the solar industry and is a deliberate choice to maintain quality control, training, and accountability. The same team that designs your system is the team that installs it.

Yes. Sunergy Systems works with a network of solar financing partners — including national lenders and lease providers — to offer customers a range of options. Your consultant will walk you through the choices that fit your situation, including the up-to-30% lease discount applied at the start of financing.

The three main electric utilities serving the greater Seattle and Puget Sound area are Puget Sound Energy (PSE), Seattle City Light (SCL), and Snohomish PUD (SNOPUD). PSE is the largest investor-owned utility in Washington, serving suburbs and communities across King, Pierce, Snohomish, Thurston, and other counties. Seattle City Light serves customers within the City of Seattle. Snohomish PUD serves most of Snohomish County and Camano Island. Sunergy Systems works in all three territories.

Puget Sound Energy is Washington State's largest investor-owned utility, providing electricity and natural gas to customers across eight counties in the Puget Sound region. For solar customers, PSE offers net metering, though the terms are transitioning after December 2025. PSE is regulated by the Washington Utilities and Transportation Commission (UTC). Sunergy Systems has extensive experience navigating PSE's interconnection and net metering processes.

Seattle City Light is the municipal electric utility serving the City of Seattle, primarily powered by hydroelectric generation — making it one of the lowest-carbon utilities in the country even before adding solar. SCL offers net metering to solar customers and has more available program capacity than PSE. Sunergy Systems is experienced with SCL's interconnection requirements and processes.

Snohomish PUD (Public Utility District) is a consumer-owned utility serving most of Snohomish County and Camano Island, governed by an elected board of commissioners. It offers net metering to residential solar customers and has its own interconnection process and rate structures. Sunergy Systems regularly installs solar for homeowners in SNOPUD territory throughout Snohomish County.

Yes, most solar customers still receive a monthly electric bill, though the amount is typically much lower. You will almost always owe at least the basic service charge — a fixed monthly fee charged regardless of energy consumption. In winter months, you may also owe for some net grid usage. In summer months, net metering credits can bring your bill to zero. Over the full year, a properly sized solar system can offset 80 to 100 percent of your electricity costs.

A basic service charge is a fixed fee utilities charge every customer each month, regardless of how much electricity they use or how much solar they generate. This fee covers the cost of maintaining the grid connection and infrastructure. Even if your solar system produces more than enough electricity to meet all your needs in a given month, you will still owe this basic service charge — typically $10 to $30 per month depending on your utility.

Time-of-use (TOU) pricing is a rate structure where electricity costs more during high-demand periods (typically evenings) and less during low-demand periods (typically midday). Washington utilities have not widely implemented residential TOU rates, but this is changing gradually. For solar customers, TOU pricing affects savings calculations because panels produce most during low-cost midday hours while you draw from the grid at higher evening rates. A home battery can help maximize savings under TOU pricing.

Going completely off-grid requires a much larger battery bank and solar array than a typical grid-tied system, and it comes with significant lifestyle and cost trade-offs. Most Washington homeowners find that a grid-tied system with net metering provides excellent financial returns without the expense and complexity of full off-grid capability. If off-grid living is your goal, Sunergy Systems can discuss what that would require for your home's energy needs.

A grid-tied solar system is connected to the utility grid and can draw power from or export power to the grid as needed. Grid-tied systems benefit from net metering and do not require large battery banks because the grid serves as a backup. An off-grid system is completely disconnected from the utility grid and relies entirely on solar panels and battery storage to meet all electricity needs year-round — requiring a much larger and more expensive system.

Under PSE's Schedule 150 net metering program, any unused net metering credits in your reserve account expire on March 31 of each year per Washington State law. Credits that accumulated over the previous year but were not applied to your bills will be forfeited rather than paid out in cash. This is why proper system sizing is important — a system sized to match your annual usage ensures you use most credits before the expiration date.

A bi-directional (or two-way) meter is an electricity meter capable of measuring both the electricity you import from the grid and the electricity you export from your solar system. Most modern smart meters are bi-directional. This measurement is essential for net metering, as it allows the utility to calculate the difference between what you consume and what you generate. Your utility installs or activates the appropriate metering as part of the solar interconnection process.

Most utilities, including PSE, recommend against significantly oversizing your system relative to annual energy consumption because net metering credits that exceed your annual usage expire rather than being paid out. If you plan to add significant electrical loads in the future — like an electric vehicle or heat pump — it makes sense to factor those into your sizing. Sunergy Systems will help you size your system appropriately based on current and anticipated future usage.

Tacoma Power, the municipal utility serving Tacoma and parts of Pierce County, offers net metering to customers with solar systems up to 100 kW. Excess generation is credited at the retail rate within a billing period; unused credits roll over month to month. Sunergy Systems handles all interconnection paperwork with Tacoma Power.

Snohomish County PUD primarily uses traditional flat-rate residential billing, not time-of-use, as of 2026. This means solar generation is credited the same regardless of time of day under net metering. Sunergy Systems will confirm current rate schedules with SnoPUD as part of your proposal.

PSE Schedule 7 is the standard residential service tariff that defines how electricity is billed. Schedule 150 was PSE's net metering tariff that allowed solar customers to bank excess generation as credits at retail rates. Schedule 150 closed to new applicants on December 31, 2025; replacement net metering terms are still being finalized by the Washington UTC.

Most Seattle residents are served by Seattle City Light. PSE serves much of the surrounding Puget Sound region, including Bellevue, Kirkland, Redmond, and Renton. Snohomish County PUD serves Snohomish County. Tacoma Power serves Tacoma. Your monthly utility bill identifies your provider, and Sunergy Systems can confirm during your consultation.

Grid stability is the utility's ability to keep voltage and frequency within safe ranges as supply and demand fluctuate. Distributed residential solar can support grid stability by reducing peak demand on hot summer afternoons. Modern grid-tied inverters include features that help maintain stability and protect both your home and the grid.

Most Puget Sound utilities charge a fixed basic service or customer charge — usually $7 to $15 per month — that you'll continue to pay even if your solar offsets 100% of your usage. Solar offsets the variable, per-kWh portion of your bill. The basic charge keeps you connected to the grid for backup and net metering.

Yes. Solar powers your home's electrical panel directly, so any appliance plugged into that panel — electric range, oven, dryer, water heater, EV charger — runs off solar when the sun is producing enough. When solar isn't producing enough, the grid (or your battery) makes up the difference seamlessly.

If you have a whole-home generator, your grid-tied solar system will shut off during a utility outage as a safety measure. The generator can power your home during the outage. To use solar with a generator simultaneously, you typically need a battery and an islanding-capable inverter. Sunergy Systems can advise on integration.

Yes. PSE's Green Power Program lets customers choose to support renewable energy generation by paying a small premium per kWh. This is separate from going solar — solar customers can also enroll in Green Power if they want to ensure 100% of any grid power they consume is renewable.

The Clean Energy Transformation Act (CETA), signed in 2019, requires Washington utilities to deliver 100% carbon-free electricity by 2045, with interim milestones in 2030 and 2035. CETA drives utility investment in renewables and influences net metering and solar integration policies across the state.

Seattle Department of Construction & Inspections (SDCI) has streamlined solar permitting in recent years. Typical residential solar permits in Seattle are issued within 2 to 4 weeks of application. Sunergy Systems handles permit submission and tracks your application through approval.

Your variable per-kWh charge can reach $0 (or even negative as a credit) in months when solar production exceeds usage. However, most utilities still charge a fixed monthly service fee — typically $7 to $15 — that solar can't offset. So while your solar bill can be very low, it usually won't be exactly $0.

Interconnection fees are charges by your utility to review your solar system's design and add it to the grid. PSE and several other utilities charge a few hundred dollars; Seattle City Light has historically charged less. These are typically included in your Sunergy Systems proposal — no surprise fees later in the process.

Yes, solar panels are an excellent complement to an electric vehicle. By charging your EV during the day when your panels are producing, you can power your miles with clean, low-cost solar energy. Many EV owners find that adding an electric vehicle is one of the most compelling reasons to go solar, as it dramatically increases the electricity you use at home — and therefore the value of every kilowatt-hour your solar system produces. Sunergy Systems can size your solar system to account for EV charging needs.

The number of panels needed to charge an EV depends on how many miles you drive. On average, an EV uses about 0.3 kWh per mile. If you drive 12,000 miles per year, that's roughly 3,600 kWh annually — equivalent to about 3 to 4 kW of additional solar capacity, or approximately 7 to 10 panels. Sunergy Systems will factor your EV charging needs into the system sizing process.

Yes, adding an electric vehicle can increase your home's electricity consumption by 20 to 40 percent or more depending on how much you drive. This makes it important to factor EV charging into your solar system sizing from the beginning, or to consider expanding an existing system. The combination of solar plus EV is one of the most financially attractive energy packages available to homeowners.

Yes. Heat pumps are highly efficient electric heating and cooling systems and work very well with solar. Running a heat pump on solar power during the day significantly reduces your reliance on grid electricity. Washington's mild climate makes heat pumps well-suited to the Pacific Northwest, and the combination of solar plus a heat pump is one of the most effective ways to reduce your energy bills and carbon footprint.

Heat pump water heaters pair very well with solar. They can be set to run primarily during midday hours when your solar production is at its peak, using free solar energy to heat water stored in the insulated tank for use throughout the day and evening. This maximizes the self-consumption of your solar energy and reduces what you pull from the grid.

Whole-home electrification is the process of converting your home's gas-powered systems — furnace, water heater, stove, dryer — to efficient electric equivalents, typically heat pumps and induction appliances. Solar pairs naturally with electrification: as you add more electric loads to your home, solar offsets the additional electricity cost. The combination can significantly reduce your total energy bill and carbon footprint.

A Level 2 EV charger operates on 240-volt power and can charge most EVs at 20 to 40 miles of range per hour of charging — allowing a typical EV to fully charge overnight. This is far faster than a standard 120-volt outlet (Level 1), which adds only 3 to 5 miles of range per hour. A Level 2 charger is the recommended home charging solution for EV owners.

Yes. Every Sunergy Systems installation includes monitoring technology that allows you to see real-time solar production through a smartphone app. For Enphase microinverter systems, the Enlighten app shows production by the minute and displays individual panel performance. You can also see how much of your solar production is being used by your home versus exported to the grid.

Solar makes the most financial sense for high-consumption loads that can be scheduled to run during daylight hours: heat pumps, EV chargers, heat pump water heaters, dishwashers, washing machines, and pool pumps. Running these appliances during peak solar production hours maximizes the use of your own solar energy rather than grid electricity. A home battery can also shift solar energy to power these appliances in the evening.

Charging speed depends on your EV charger (Level 1 vs Level 2), your EV's battery capacity, and how much solar is producing at the time. A 7 kW solar system can deliver roughly 25 to 30 miles of range per hour to most EVs during peak production. Overnight charging from solar requires a battery, which Sunergy Systems can include in your design.

Yes. The Tesla Wall Connector is a Level 2 charger (240V) that draws up to 48 amps and works seamlessly with home solar. When solar production exceeds household loads, the surplus charges your Tesla. Sunergy Systems can install both the solar system and a Tesla Wall Connector as part of one project.

Two EVs in a household add roughly 4,000 to 7,000 kWh of annual electricity demand depending on driving habits — equivalent to roughly 4 to 6 additional solar panels. Sunergy Systems sizes each system based on your usage history and projected EV charging needs to make sure your solar covers both vehicles plus household loads.

Vehicle-to-Home (V2H) lets your EV's battery power your home during a grid outage. It requires a bidirectional EV charger and a compatible vehicle (Ford F-150 Lightning, some GM EVs, the Tesla Cybertruck, and others). V2H is still emerging — Sunergy Systems can advise on current options and ensure your solar system is compatible.

A smart electrical panel like Span replaces your standard breaker panel with one that monitors and controls every circuit individually from an app. Combined with solar and a battery, it lets you prioritize which loads get backed up during outages and optimize energy use. Sunergy Systems can include Span in your proposal.

Solar works with any smart thermostat. While there's no direct integration between solar production and most smart thermostats, you can use the thermostat to schedule heavy heating or cooling during peak solar production hours, maximizing self-consumption of solar energy.

Yes — heat pumps are one of the best pairings for solar in Seattle. Heat pumps replace gas or electric resistance heating with very efficient electric heating, increasing your home's electricity use. Solar offsets that increased usage with clean, free electricity. Sunergy Systems often sees the best outcomes when solar is paired with a heat pump conversion.

A heat pump water heater (HPWH) uses a refrigeration cycle to heat water 2 to 3 times more efficiently than electric resistance heating. Pairing it with solar means your hot water is essentially free during sunny months and very inexpensive year-round. Many Sunergy Systems customers add HPWH to their electrification plan.

Yes. Your solar system feeds your home's main electrical panel, which powers all your circuits including the electric stove. When the stove is on and solar is producing, you're using solar energy. When solar isn't producing, the grid (or your battery) covers the load.

Sunergy Systems specializes in solar and battery storage and partners with reputable HVAC contractors for heat pump installations. We can connect customers with our trusted partners and coordinate timing if you're doing both projects, including ensuring the solar system size accounts for the new heat pump load.

A smart load controller intelligently manages high-demand loads (EV charger, heat pump water heater, electric vehicle) to prevent overloading your electrical panel. It can sometimes let you avoid a costly panel upgrade. Sunergy Systems will recommend a load controller when it makes sense for your home.

Yes. Every Sunergy Systems install includes monitoring through the panel or inverter manufacturer's app — Enphase Enlighten, SolarEdge mySolarEdge, or Tesla app for Powerwall systems. You can see real-time production, daily/monthly/yearly totals, individual panel performance, and battery status from your phone.

The Tesla app monitors Powerwall battery storage and any Tesla solar inverter. It shows real-time energy flows between solar, home, battery, and grid; lets you set backup reserve levels; and provides historical production and consumption data. It works with Sunergy Systems' Tesla Powerwall installations out of the box.

Yes. Going solar can improve your home's energy ratings (HERS, Energy Star) and is increasingly recognized in real estate listings as a feature that boosts home value. Some certifications now include on-site renewable energy generation as a positive factor.