View of a SunPower solar battery system installed in a residential garage with two batteries.

Enhance your solar power system by adding home batteries

Solar Battery Storage Systems for Homeowners

Solar Battery Systems from SunPower

In your home, power is everything. Keeping the lights on at night, finding savings for your family and fresh food in the refrigerator is more than a luxury. It represents safety, freedom and control. Adding a battery to your residential solar system can maintain safety and savings for the future.*

SunPower makes it easy to add batteries to any home. Learn more about the benefits of adding solar battery storage to your home power system.

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Solar Battery with Home Backup

Become less reliant on the utility and keep your home energized with solar energy during power outages. In addition to controlling energy costs, home backup can keep the lights on and power your essential appliances during grid interruptions.

Questions about solar batteries? Request a free online appointment with SunPower.

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See how SunVault® can power your home.

Select items to power in an outage:
8 kW
Single BatteryTwo Batteries
1 battery can provide up to:
Calculation is an estimate (using 19.5 kWh and 39 kWh capacities) based on typical use of electrical appliances as provided by the Silicon Valley Power Appliance Energy Use Chart. Customer experience will vary based on location, actual usage and system size. SunPower does not warrant or guarantee this performance. Some appliances may not be compatible with storage system. Your SunPower installation contractor can help you determine which appliances and devices are compatible.

Backup your home

Power outages are simply part of our world these days. From rolling blackouts to lightning storms to simply spending more time at home—be the house on the block where the lights shine bright and the electric bills drop.*


Increase your energy independence

Electricity costs are rising across the country, and utilities are charging more when you need power the most. Instead, make your own clean energy, store the excess for peak times or power outages, and increase your home energy independence.

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Control your home energy use

With the mySunPower® app you can manage your home solar, storage and electricity use—from virtually anywhere. Monitor battery charge levels and customize storage settings on the fly. Available on your phone, tablet, or desktop.

How solar battery systems with home backup work

In the video below we explain how combining a SunPower Equinox® solar system with battery backup like SunVault Storage can power your home with cleaner energy, lower your electric bills and keep the lights on when grid power goes out.

Charge with solar

As your SunPower Equinox system produces energy, it sends the electricity you're not using to SunVault Storage and/or sells it back to the grid for a credit on future electric bills.*

Manage peak demand usage

Intelligent software monitors your solar, home energy use and utility rates to determine which power source to use—maximizing use of solar and reducing peak-time charges.

Backup your essentials

When the power goes out, SunVault Storage can provide seamless backup to power your essential appliances, such as keeping the lights on or running your refrigerator.*

Increase earnings from solar battery storage with SunPower Virtual Power Plants

You can earn extra money on top of electric bill savings by joining SunPower's Virtual Power Plant and helping reduce strain on the electric grid.*

Learn more about SunPower VPP programs

Enhance your home power system with solar batteries

Adding a home battery to your SunPower Equinox solar system is the perfect way to make the most of the solar energy you produce.

How solar battery storage can boost your savings

How solar battery storage can boost your savings

Four ways you can maximize your savings with SunVault storage.

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SunVault Storage FAQs

See how a solar battery system with home backup works, from day to night.

Graph of TOU rates with solar battery storage

Understanding Time-Of-Use Electricity Rates

TOU rates refer to the higher costs your utility company may charge when demand for electricity goes up.


Battery system benefits under NEM 3.0 in California

Adding a home battery is key to getting the most out of solar under NEM 3.0 in California.

Frequently asked questions about solar battery storage

What is NEM 3.0 and how does solar battery storage factor into play?

NEM 3.0 is an updated solar buyback rate program in California effective April 2023 for PG&E, SCE, and SDG&E customers. Under NEM 3.0 the precise value solar customers are compensated varies with grid demand based on time, day, and month– but is on average 75% lower than it was for NEM 2.0 systems.

Solar batteries benefit homeowners by storing your excess energy rather than sending it back to the grid, allowing you to use it later to maximize the value of that energy.

What is included in the SunPower SunVault Storage System?

SunVault storage is comprised of two boxes (or more with whole home backup), the SunVault Battery and Hub+® (the brains behind the system). Additionally, all customers receive access to SunPower's mobile app to view their performance and manage system settings.

Is there a warranty? How does it compare?

Yes. SunPower provides a 10-year warranty for SunVault Storage as part of the Complete Confidence Warranty—the same warranty that covers your SunPower solar system.

Will the battery work on days when it is not sunny outside?

SunVault Storage is designed to charge when it is sunny and discharge when needed based on your settings. In your mobile app, you can select how much of the battery you want to use daily for cost savings and how much to reserve for an outage.