The best in battery storage

Northwest Electric and Solar offer battery backup installations in Washington State – installable with a solar PV system or alone. We offer Tesla’s Powerwall with Tesla Gateway and Enphase’s IQ Batteries.

Your home battery backup system can provide clean, reliable power during a utility outage, replacing the fossil-fuel-burning generator. It does not pollute the air and does not require you to keep combustible gasoline or diesel on hand. A solar system automatically shuts down without battery storage during a power outage.

Suppose you already have solar energy or get a solar system simultaneously as your battery. In that case, the solar-connected battery backup installation is eligible in Washington State for the Federal Income Tax Credit. Purchase and installation of the solar system are state sales tax exempt, but you will have to pay sales tax on the battery backup system.

Using battery backup

Backup power

Switching over to battery power is automatic the instant the utility grid goes down. The seamless transition has no ill effects on your electronics and appliances. When the grid comes back, another seamless transition switches you back. The battery will then automatically recharge from grid power or recharge from your solar energy system during daylight.

Self consumption

Clean electricity from your battery is solely used for self-consumption. In Washington, you cannot send battery power to the grid for net metering credits as you do with solar electricity.

Load shifting

In the future, if your electric utility goes to “time-of-use” rates, you can save money when you use battery power during the most expensive rate periods and charge the battery up during less costly periods. Battery storage can offer financial benefits in California, where electricity during peak hours is costly or when a customer pays a high “demand charge.”

Home backup

A partial backup works great for anyone looking to back up just a few critical loads. We’ll install a small subpanel and relocate up to 10 loads (every 30 amps and under) into this panel, which will have power during an outage. If you want to run your microgrid at your home, a Whole Home Backup is the option for you. Keep everything in your home powered during an outage!


Battery brands we trust

Tesla Powerwall Battery System

Each Tesla Powerwall Battery system consists of one or more 13.5 kW rechargeable lithium-ion battery packs and software housed in a Gateway that intelligently dispatches electricity. Powerwall mounting can go on the wall, floor, indoors, or outdoors. They can be placed adjacent to each other or stacked front to back.

System size (number of Powerwall batteries) depends on the size of your solar system, the electric loads you want to run when the grid goes down, and the length of time you need to power them. We take care of everything from design and permits to testing and teaching you how to use them.

The solar battery backup installation takes 1 to 2 days for a Washington State residential system, longer for a more extensive procedure. When the installation is complete, our electrician will test the system. We will turn off-grid power to simulate a power outage and train you to use the Powerwall cell phone app. Watch a short video showing the energy flow in How Powerwall Works. Quantities are limited, so reserve yours today!

image of Enphase's battery backup energy storage system options

Enphase IQ Battery Systems

The Enphase system is efficient, modular, and affordable, making home battery backup more practical for more people than ever. Experience All-in-one solar plus storage as Enphase unites inverter, battery, and monitoring. One company on a single software platform.

Enphase’s AC-coupled system allows you to start small, go big, or grow over time. Enphase batteries use Lithium Iron Phosphate (LFP) battery chemistry to provide industry-leading safety and undergo the most rigorous industry testing and certification. Utilize Power Start™ technology to turn on energy-intensive appliances smoothly while reducing the risk of system crashes. Storm Guard alerts you to extreme weather events and automatically helps prepare your home to stay powered on during an outage.

Control your loads with IQ Load Controller and make your battery last longer in an outage by prioritizing and directing power to critical loads through Enphase’s battery app. Create your energy management system today with Enphase batteries and keep the energy constantly flowing.

Fortress Power LFP Batteries

Utilizing safe Lithium Iron Phosphate Technology (LifePO4), Fortress Power is opening up Off-Grid projects to battery backup solutions. Scale your battery energy storage systems with Fortress Power’s eFlex 5.4kWh batteries.

Fortress Power designs and manufactures batteries for off-grid applications. With a safe design, 15+ year lifespan, and zero maintenance. With a built-in proprietary battery management system, homeowners are assured that after installation, they can enjoy full power backup.

In DC-coupled mode, both solar and batteries share the inverter, and solar can directly charge the batteries. In AC-coupled, the solar has its inverter and sometimes distributes power to the house loads before giving the excess power to the batteries.

Plus, they have racking options, such as the FlexTower, which serves as the battery enclosure. Which protects and allows for easy wiring of the batteries maximizing the safety and efficiency of the installation!

Battery comparison

We’ve chosen these battery options to provide you with the best selection of home battery backup solutions. Use this comparison chart to find the battery that suits your backup needs.

Tesla Powerwall

+

Capacity (kWh)

13.5

Warranty

10 years

Battery Type

AC Battery System

Dimensions (WxHxD)

45.3 x 29.6 x 5.75 inches

Environment

Indoor and Outdoor

Round Trip Efficiency*

90%

Mounting

Floor or Wall

Transparent background image of Enphase IQ battery 10T energy storage system

IQ Battery 10T

+

Capacity (kWh)

10.08

Warranty

10 years

Battery Type

AC Battery System

Dimensions (WxHxD)

50.5 x 30.5 x 7.4 inches

Environment

Indoor and Outdoor

Round Trip Efficiency*

96%

Mounting

Wall

Image of Enphase IQ Battery 3T energy storage system

IQ Battery 3T

+

Capacity (kWh)

3.36

Warranty

10 years

Battery Type

AC Battery System

Dimensions (WxHxD)

16.9 x 30.5 x 7.4 inches

Environment

Indoor and Outdoor

Round Trip Efficiency*

89%

Mounting

Wall

eFlex 5.4

+

Capacity (kWh)

5.374

Warranty

10 years

Battery Type

DC Battery System

Dimensions (WxHxD)

17.5 x 7.2 x 21.5 inches

Environment

Indoor and Outdoor

Round Trip Efficiency*

98%

Mounting

Wall or in Racking

*Round trip efficiency is the percentage of electricity put into storage that is later retrieved

Take 30% off your battery storage system cost!

With the passing of the Inflation Reduction Act of 2022, stand-alone battery energy storage systems qualify for a 30% tax credit! Until the end of 2032, a federal income tax credit is available for 30% of the total cost of purchase and installation (including sales tax) of a battery energy storage system, providing the owner has sufficient tax liability. Learn more when you talk to our sales consultants and find the right energy storage solution for your home or business!