Which Power Source Is Most Efficient?

Australian researchers just unveiled the most efficient solar panels ever. How efficient are they, and what is the most efficient source of energy?

Solar researchers working at the University of New South Wales (UNSW) claim to have produced a system that converts over 40 percent of incoming sunlight into electricity, thereby taking the title of highest solar efficiency for a photovoltaic system ever reported.

The researchers first achieved their record efficiency in indoor tests in a facility in Sydney, Australia, and then had these achievements duplicated and ratified by the National Renewable Energy Laboratory (NREL) using an outdoor test facility in the United States.

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