GE: Smart grid yields net-zero energy home

General Electric unveiled a project at its research labs that will let homeowners cut annual energy consumption to zero by 2015. These "net-zero energy homes" will combine on-site power generation through solar panels or wind turbines with energy-efficient appliances and on-site storage. Consumers will get detailed energy data and potentially control appliances with Home Energy Manager, a device that is expected to cost between $200 and $250. Studies show that when consumers have more detailed information on their energy use, they can find ways to reduce consumption by 5 to 10 percent. When utilities have variable, or time-of-use, pricing, consumers could cut electricity use by 15 percent at on-peak times, typically in the morning and early evening. GE appliances have been converted to have electronic controls and will have a small module in the back that will allow it to communicate with a home's smart meter. With that communication link in place, consumers can find out how much electricity individual appliances use and program them to take advantage of off-peak rates.