Tesla Energy
On April 30, 2015, Tesla announced Tesla Energy, a business focused on storing solar power, and its first product, the Powerwall home battery: a rechargeable lithium-ion battery that mounts on a wall.
Source: TechCrunch: Tesla’s Powerwall home battery and Tesla Energy unveiled (Apr. 30, 2015)
Powerwall over the years
Tesla says the first Powerwall was installed in May 2015. Mass production started at its Nevada factory in 2017, with a Tesla-designed DC-to-AC inverter built in. Powerwall 3, released in September 2023, added an integrated solar inverter.
Source: Tesla: Powerwall (history notes)
A million installs
Tesla says the one millionth Powerwall was installed at a customer’s home in 2025.
Source: Tesla: Powerwall (history notes)
This is a history, not an endorsement. IES isn’t affiliated with Tesla Energy (Powerwall), and its name and product names are trademarks of their owners. We use plain text, not logos.