Over the past 24 years, the National Renewable Energy Lab (NREL) has helped to bring a variety of green energy technologies to market


Photovoltaic modules have tumbled to $3 per watt of generating capacity from $20, while the modules have more than doubled in efficiency


Generation costs have fallen 90%, to 4 cents per kilowatt hour from 40 cents, in large part due to research at the largest turbine testing facility in the U.S.


Advances in building design, heating and air-conditioning systems, lighting, and insulation can slash energy usage by 40% to 80%

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