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 consultant for TCAP, a coalition of political subdivisions in Texas that purchase electricity in the deregulated market for their own governmental use. Because energy costs are typically a significant budget item to our members, TCAP is consistently looking for ways to save our members money, through cost-saving contracts, energy efficiency or demand response programs.