Tesla quickly sold out of the first production run of its Powerwall home battery in early May 2015. Priced at $3,500 for the 10 kilowatt-hour model and $3,000 for the 7 kilowatt-hour version, neither ...

Less than a year after Tesla unveiled its Powerwall battery for storing electricity at home, a startup has designed a much cheaper alternative that you can plug in yourself, without an electrician.

Renewable energy sources are great for the environment, but resources like wind and solar power are intermittent and a bit unreliable. Now, a new Kickstarter campaign is offering a fix, and it’s one ...

The laws of supply and demand – maybe with a pinch of capitalism – generally dictate how much homes and businesses might spend per month on power. As such, consumers can expect to pay a premium for ...

Tesla isn't the only one building batteries for your home. As Elon Musk and company trumpet the Powerwall, so many other outfits, including Samsung and Panasonic and LG Chem, are fashioning similar ...