Introducing the world’s most efficient solar panel
Creative Commons: Mike Baker, 2009
North Carolina’s Semprius Inc. and its German backer Siemens said they have developed the world’s most efficient solar panel.
The prototype converts 33.9 percent of the sunlight that hits it into electricity, according to separate press releases from the two companies. That’s more than double the most efficient conventional photovoltaic (PV) module on the market, where performance tops out at 16 percent, Forbes magazine found late last year.
It beats the previous laboratory best of 32 percent, Semprius said, citing testing and certification from Spain’s Instituto de Energia Solar at the Universidad Politécnica de Madrid. Semprius late last year announced a breakthrough in the 41 percent efficient solar cells it builds into its modules. Cells typically are more efficient than the overall module.
In the game of energy economics, even a small improvement could make a big difference in returns on investment, especially on large utility scale projects. Efficient panels can also make better use of limited space on, say, a rooftop. “This is a significant milestone for Semprius and the entire PV industry,” said Scott Burroughs, vice president of technology at Durham, N.C.-based Semprius. “For the first time we have been able to convert more than one third of the sun’s energy into usable electricity.”
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