"A year after Elon Musk unveiled the Powerwall at Tesla Motors Inc.’s design studio near Los Angeles, the first wave of residential installations has started in the U.S. The 6.4-kilowatt-hour unit stores electricity from home solar systems and provides backup in the case of a conventional outage. Weighing 214 pounds and standing about 4-feet tall, it retails for around $3,000. But hookup by a trained electrician is required, as is something called a bi-directional inverter that converts direct-current electricity into the kind used by dishwashers and refrigerators. The costs add up quickly -- which has fueled skepticism about Musk’s dream of changing the way the world uses energy.Tesla Powerwalls for Home Energy Storage Are Hitting U.S. Market - Bloomberg
Net-metering policies, which allow residential solar customers to sell their excess solar electricity back to utilities, have limited the appeal of home batteries in many states. But that’s shifting: Net metering is being phased out in some states, making storage more attractive."
Wednesday, May 04, 2016
Tesla Powerwalls for Home Energy Storage Are Hitting U.S. Market - Bloomberg
Later in the article: "“We’re confident that we will sell or lease every one,” said [Green Mountain Power] CEO Mary Powell. “We’re trying to transform a 100-year-old electric grid, and Tesla is killing it in terms of driving down cost while constantly improving the technology.”"