Tesla Powerwall
A Revolutionary Battery For Home
Sunergy Systems is a proud Seattle based Tesla Powerwall Certified Installer. We offer a customized solar-plus-battery solution that enables you to access the free, abundant power of the sun when you need it the most, for backup power in the event of a grid outage. Plus, when combined with a solar energy system, your Powerwall might be eligible for sales tax exemption and the federal solar tax credit.
Each Tesla Powerwall consists of a lithium-ion battery pack, liquid thermal control system, integrated inverter, and software. The unit mounts seamlessly on a wall or on the ground, indoors or outdoors.
What Can The Powerwall Backup?
Powerwall stores 13.5 kilowatt-hours (kWh) of usable electricity and will recharge using solar power (when installed). Based on the above daily habits, a fully charged Powerwall will provide the following duration of power during a power grid outage:
When coupled with a 6.5 kilowatt (kW) solar energy system in the Puget Sound region, the duration may be increased by:
Each Tesla Powerwall consists of a lithium-ion battery pack, liquid thermal control system, integrated inverter, and software. The unit mounts seamlessly on a wall or on the ground, indoors or outdoors.
Tesla Powerwall systems are eligible for the 30% Federal Solar Investment Tax Credit. The system must be installed by the end of 2032 to qualify and by the end of 2033 to qualify for the reduced 26% Investment Tax Credit.
Battery backup systems are exempt for all sales taxes. Visit our incentives page for more detailed information.
Now’s a great time to lock in your energy rate before it rises again and the incentives disappear.
We’re seriously not trying to dodge this question, but it really is different on a site-to-site basis and from a personal preference. For most systems, we install 1 or 2 powerwalls. The total number is a personal choice depending on how much power you want or need to store and what types of devices you hope to switch on during a grid outage. Each of our systems are fully customized to maximize the homeowner’s financial benefit and to reach their goals. To get a full picture of how many powerwalls you might need, we would need to have an in-depth conversation about your objectives and review your average consumption history.
It’s all about the give and take when it comes to planning out your home battery storage solution. When designing your energy storage system, it is essential to find a balance between the total capacity of the Powerwall(s) with the demand of everything you need to power up. Each Powerwall can deliver up to 48 amps, and up to 4 Powerwalls can be connected side by side. However, even if there is enough amperage to cover all of your loads, we need to consider the pace of how quickly electricity will be drawn to maximize the effectiveness of your back-up system.
A common misconception is that your solar output will recharge your battery at the same rate you’re using it. This depends greatly on uncontrollable factors like weather and user consumption habits. An easy way to look at battery storage is to think of how driving tendencies vary by operator and by vehicle. You may be a more efficient driver of your new Prius while your cousin Karen drives a 2001 Jeep Wrangler like she’s running a desert race. Similarly, Powerwall performance will be dependent on user consumption tendencies and what you are powering up. A small, highly efficient home with energy efficient appliances might power more than a larger, older home with leaky windows. By monitoring your usage and storage abilities, you’ll gain greater insight into what you can power and how quickly your Powerwall might recharge.
Ultimately, to determine what’s best for you, we need to take a look at your average historic usage and discuss what you’re looking to get out of our battery storage.
Not technically, but it’s hard to see the benefit of having battery storage that’s not connected to a solar system in Washington State. Unlike areas that have a high variation in on-peak and off-peak rates, think California, time-of-use load shifting isn’t financially rewarding in the Evergreen State. There is no need to store your unused solar energy since net metering allows you to store your excess production on the grid as a credit to use later. This is essentially a free energy storage vault.
Battery backup systems that are connected to a solar system from 2022-2032 are eligible for the 30% Federal Solar Investment Tax Credit. Don’t wait, prices for solar equipment are on the rise!
Just like any other battery storage option, a Tesla Powerwall captures and stores energy to be used by your home when needed later. What makes the Powerwall standout from other battery storage options is its ability to power larger loads and for a longer duration. This means you have the freedom to power up more of what you need without running out of storage during an outage.
How Do We Calculate Energy Usage?
These estimates provide a general sense of how various electricity-using activities affect how long a fully charged Powerwall battery system will last during a grid outage. Different activities are assumed to be spread out over time (rather than all at the same instant), so as not to exceed a Powerwall’s peak power delivery. To calculate how many ‘days’ your Powerwall will last in a power outage, we divide the energy storage capacity of the installed Powerwall(s) by the sum of all selected activities’ energy consumption.
A ‘day’ in this tool represents a household’s variety of selected activities within a single 24-hour period. However, depending on the timing of these activities, the Powerwall’s stored energy may be depleted in a number of hours that is considerably less than 24 hours. While this estimate provides generalized examples, your Powerwall’s longevity during an outage depends on the specific characteristics of your appliances, such as the brand, model, and condition.
Example Household Daily Habits
