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 .
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Is a policy analyst for TCAP, a coalition of cities and other political subdivisions that purchase electricity in the deregulated market for their own governmental use. Because high energy costs can impact municipal budgets and the ability to fund essential services, TCAP, as part of its mission, actively promotes affordable energy policies. High energy prices also place a burden on local businesses and home consumers.