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The SunPower SunVault, Tesla Powerwall and SonnenCore+ are among the best solar batteries for 2024. Smart Lithium Battery
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Faith is a writer whose work has been featured in EcoWatch and Today’s Homeowner. She holds economics and English degrees from the University of North Carolina at Chapel Hill and likes to collect books and spend time in nature in her free time.
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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, Tesla Powerwall and SonnenCore+, but the best battery for you will depend on your energy needs and preferences.
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.
See our list of top solar providers based on in-depth research.
Select the provider that best fits your needs.
Get a free, no-obligation quote for your home.
Integrating a solar battery into a new or existing solar panel system almost always requires professional installation. Select one of our top solar companies from the panel above to get connected with a solar battery installer.
See how our top-rated solar batteries compare on key metrics and see which one of our trusted installers can add them to a new or existing system.
Below are our top six solar batteries:
SunPower manufactures some of the best solar panels on the market in terms of efficiency and durability. The SunPower SunVault battery complements any SunPower system with a large energy capacity of 13 kWh and an above-average continuous power rating of 6.8 kW. It also includes an excellent warranty that doesn’t limit the number of cycles your battery can discharge like some other companies. The SunPower SunVault is our top choice for homeowners who already have SunPower solar panels or are planning to install a SunPower system. Unfortunately, SunPower SunVault is not compatible with non-SunPower brand solar panels.
SunPower offers two models of its SunVault battery system: the SunVault 13 and the SunVault 26. The SunVault 13 offers 13 kWh of battery power, while the SunVault 26 offers 26 kWh.
The SunVault 26 system consists of the SV-BASE13-12-A and SV-ENERGY13-12-A models to expand the amount of power a system can hold. The SunVault 12 only consists of the standard SV-BASE13-12-A model.
*SunPower guarantees its batteries will retain at least 70% of their initial energy capacity by the end of the 10-year warranty period. This percentage may vary based on the manufacturer.
SunPower manufactures its solar products and uses certified partners to install batteries and other solar equipment in all 50 U.S. states. Blue Raven Solar is another popular solar company that installs SunPower SunVaults. If you’re interested in the SunPower SunVault, click below for a free, no-obligation quote.
The Tesla Powerwall is one of the most popular solar batteries available, featuring a sleek design with strong performance and efficiency. The Tesla Powerwall 2 is also compatible with any solar panels, not just Tesla systems.
Due to its popularity, the Tesla Powerwall is frequently on backorder and only comes in one size. However, you can add more Powerwalls to expand your system.
The Tesla Powerwall comes in two models, both with 13.5 kWh of storage capacity: the Powerwall 2 and the Powerwall+. The key difference is that the Tesla Powerwall 2 is just a solar battery, while the Tesla Powerwall+ is both a solar battery and inverter.
The Powerwall+ is ideal for new solar installations, while the Powerwall 2 is more suitable for retrofitting into an existing solar system.
Although you can order a Powerwall directly through the Tesla Website, the company requires that Tesla Certified Professionals install all batteries.
Several nationwide solar panel companies, including Sunrun and Palmetto, install the Tesla Powerwall. You can also use the search tool on Tesla’s website to find an installer in your area.
Sonnen offers a variety of battery models that can adjust to your energy needs and budget. For example, you can adjust the energy capacity of your Sonnen ecoLinx by 2 kWh increments up to a massive 30 kWh battery. However, the high price point is out of reach for many customers.
The SonnenEvo and SonnenCore+ are more standard batteries available in 10 kWh and 20 kWh sizes. Plus, the SonnenEvo is alternating current or AC-coupled, meaning you can use it as an energy storage device whether or not you have solar panels.
Photo courtesy of Sonnen
Compare Sonnen’s solar battery models:
Sonnen partners with solar companies throughout the U.S. to install its solar batteries like, but our top recommended installers are Elevation, Trinity Solar, and Sunnova Solar. You can find more Sonnen solar battery installer on the Sonnen website.
Enphase manufactures a variety of solar energy products, including solar panels, microinverters, and of course, solar batteries. With a 96% round-trip efficiency and a 100% depth of discharge, Enphase offers some of the most efficient batteries available today.
The standard Enphase IQ battery setup offers 10.08 kWh of battery storage, though it can be expanded.
Photo courtesy of Enphase
Several top solar providers install Enphase solar batteries, including Freedom Solar Energy and Semper Solaris.
6ah Lithium Battery Click below to speak with a solar professional about your Enphase solar battery installation today.