Tesla CEO Elon Musk formally announced last week that his electric car company will spin off a new battery business. Tesla Energy—now distinct from Tesla Motors—will manufacture lithium ion ...

The Tesla Powerwall home battery system puts a higher-tech face on technology ... short-term UPS-like coverage until the backup diesel generator kicks in. Awesome as Tesla's devices may be ...

"I was pleasantly surprised by how compact Tesla's system proved to be," he said, noting that he'd expected a large unit on the side of the home ... to get gas for their generator.

SolarCity will also sell the Tesla battery systems. The Powerwall is 60% less expensive than a previous home battery product it had sold, the company said. For businesses and government ...

High energy bills and new tax incentives have more people turning to solar power for their homes. With a 30% federal tax credit and other local perks, installing a residential solar system has ...

PG&E predicts that the Tesla Megapack system will save consumers more than $100 million over the project’s 20-year life span when compared to the forecasted local capacity requirements and ...