The Institute for Electric Efficiency (IEE) has updated its smart meter research, revealing that nearly one in three U.S. households have a smart meter already. That’s up from one in four households in September of 2011.

IEE projects one half of all U.S. households will be equipped with smart meters by 2015. But what is still unknown – and the subject of much worry by smart meter vendors – is how quickly the other half of the country will get upgraded.

via Smart Grid: Nearly a third of U.S. households have smart meters already, new study reveals.

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