Tesla's long history of research and development has enabled a cost-effective, wall-mounted storage appliance that is small, powerful and covered by a long lasting full 10 year warranty.
The actual battery unit is about the size of a solar power inverter, and will be mounted on the wall in your garage or near your electrical panel." - Source: Solar City: Home Energy Storage & Battery Backup System
Elon Musk - Solar City "Elon is the Chairman of SolarCity, the leading residential solar provider in the U.S. In addition to his role at SolarCity, Elon is also the co-founder, chairman and CEO of Tesla Motors, an all-electric American car company. As Chairman at Tesla Motors, Elon helped design the ground-breaking Tesla Roadster, for which he won an Index and a Global Green award, the latter presented by Mikhail Gorbachev.
Elon is also the founder and CEO of SpaceX - a space launch vehicle company. Prior to SpaceX, he co-founded PayPal, the world's leading electronic payment system, and served as the company's chairman and CEO. PayPal went public in early 2002 and was sold to eBay later that year for $1.5 billion. Elon's first company was an Internet software company called Zip2. He co-founded Zip2 in 1995, serving initially as CEO and then as CTO. Zip2 was sold to Compaq in 1999 for over $300 million in an all cash transaction.
Elon's commitment to renewable energy extends beyond his roles at SolarCity, Tesla Motors and SpaceX. Elon is a trustee of the X Prize Foundation and the Musk Foundation, both of which have a strong interest in promoting renewable and environmentally friendly energy technologies."
X Prize Foundation "...The most high-profile XPRIZE to date was the Ansari XPRIZE relating to spacecraft development awarded in 2004. This prize was intended to inspire research and development into technology for space exploration...."
Before Mars.... Musk veers toward the Moon ".....The next step beyond that is to maybe send people beyond low Earth orbit to a loop around the Moon, possibly land on the Moon — although I’m not super interested in the Moon personally because obviously we’ve done that and we know we can — but maybe just to prove the capability...."