Tesla Powerwall

Tesla Powerwall Certified InstallerSunergy Systems is a proud 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 back-up power in the event of a grid outage. Plus, when combined with solar, your Powerwall is eligible for a 30% Federal tax credit.

Each Powerwall consists of a lithium-ion battery pack, liquid thermal control system, and integrated inverter and software. The unit mounts seamlessly on a wall or on the ground, indoors or outdoors.

Sunergy Systems is one of a select few solar installers in the greater Seattle area to be a Tesla Powerwall Certified Installer. We also provide other battery back-up solutions; to find the right solution for you, call us today at (206) 297-0086 for a free consultation.

What Can The Tesla Powerwall Do?

Powerwall Systems Specifications

Example Household Daily Habits

Powerwall calculator

How Long Will Powerwall Last In A Power Grid Outage?

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:

Powerwall backup hours - 1 day 5 hours 57 minutes

When coupled with a 6.5 kilowatt (kW) solar energy system in the Puget Sound region, the duration may be increased by:

Powerwall and solar duration increase - 62% winter day 147% spring day 200% summer day

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.