General Electric will begin marketing the first line of commercial hot water heaters with the ability to communicate with electric meters and utilities to improve energy efficiency. Such "smart" appliances are able to communicate with a utility to determine how to make the most efficient use of the power grid. Although significant changes to grids need to occur before these "smart" devices can be very useful, the company predicts that smart water heaters, microwaves and dryers will be in wide use by 2012.

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