The Tesla Powerwall is a rechargeable lithium-ion battery stationary home energy storage product manufactured by Tesla Energy. The Powerwall stores electricity for solar self-consumption, time of use load shifting, and backup power.[1][2]
The Powerwall was introduced in 2015 as Powerwall 1 with limited production. A larger model—Powerwall 2—went into mass production in early 2017 at Tesla's Giga Nevada factory, with a more capable model with an internal DC–to–AC inverter—Powerwall 3—entering production in late 2023. The one million'th Powerwall was installed in 2025.
History
As Tesla Motors (now Tesla, Inc.) developed batteries for its electric car business, it also started experimenting with using batteries for energy storage. Starting in 2012, Tesla installed prototype battery packs (later developed into the Tesla Powerpack