Solar batteries store excess energy from your solar panels to use at night, on cloudy days or during power outages. See how adding them to your solar system allows you to use more of the energy you’re generating in this guide to the best solar batteries.

We’ve thoroughly researched the top solar battery options on the market, reviewing each model’s warranty, power rating, capacity, longevity and more. Our picks for solar batteries are SunPower SunVault, Tesla Powerwall and SonnenCore+, but the best battery for you will depend on your energy needs and preferences. This includes whether you’re installing a battery on a new or existing solar system, how much energy storage you want and your energy usage.