6 Solar technologies to power the world

At last, solar energy is big enough and cheap enough to power electrical grids. Business 2.0 features the latest projects under the sun.

Ground-mounted tracking photovoltaic
Utilty-scale solar refers to any solar installation large enough to replace conventional power plants. This solar station outside the village of Serpa, Portugal, was built by PowerLight of Berkeley, Calif. It covers 150 acres and powers 8,000 homes.






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