The batteries would be used by homes and businesses to store excess energy generated from solar panels during the day, and drawn from at night when panels sit idle.

Official details of the project are still a ways off. When we contacted them, Tesla said they're currently not sharing any additional information about their energy storage and home batteries for several months. What Musk did reveal during the conference call was that "we're going to unveil the Tesla home battery, or consumer battery, that will be for use in people's houses or businesses, fairly soon." Adding that, "we have the design done and it should start going into production probably in about six months or so. We're trying to figure out a date to have the product unveiling – it's probably in the next month or two. It's really great. I'm really excited about it."