Utilities thrilled and worried about electric cars - CNBC

"Progress Energy is expecting electric car clusters to form in Raleigh, Cary and Asheville, N.C. and around Orlando and Tampa, Fla. Duke Energy is expecting the same in Charlotte and Indianapolis. The entire territory of Texas' Austin Energy will likely be an electric vehicle hot spot.

Adding an electric vehicle or two to a neighborhood can be like adding another house, and it can stress the equipment that services those houses. 'We're talking about doubling the load of a conventional home,' says Karl Rabago, who leads Austin Energy's electric vehicle-readiness program. 'It's big.'"