A City Gone Smart

摘要

Early returns are in from the smart grid test city of Boulder, Colorado: Impressive savings, increased reliability and excitement for what comes next. "My electrical bills have gone down to zero," says Dennis Arfmann, 59, an environmental lawyer whose 3,700-square-foot home was in the first wave of test sites. "Xcel [Energy, the electric utilityrnleading the test] pays me," he says, because his home generates more electricity than it uses.