Planet 2025A breakthrough in solar cell technology promises to make solar power a cost-competitive energy option and to reduce U.S. dependence on oil. With funding from the Department of Energy, Boeing-Spectrolab has managed to create a solar cell with 40.7% sunlight-to-energy conversion efficiency. Most of today's solar cells are between 12% and 18% efficient. In 1954, 4% efficiency was state of the art. Read more...
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