After living off-the-grid for two ... are using power in a completely different way," says Courtney. "We have so much power that we don't know what to do with it." Going solar is one of the ...

The generous array, along with a rainwater harvesting system, allows the concrete home to operate entirely off-grid.

You may have missed it, but Tesla’s Powerwall technology, which is essentially a giant battery pack that can store energy for use at a later time, is now in its third generation, boasting a number of ...