The power in the wind increases with the cube of the wind speed. Hence, the resource available at a specific location depends strongly on the annual mean wind speed. The European Wind indicates on a large scale those regions with similar annual mean wind speed. (more…)

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A solar cell is a solid state semiconductor device that produces DC (direct current) electricity when stimulated by photons. When the photons contact the atomic structure of the cell, they dislodge electrons from the atoms. This leaves a void which attracts other free available electrons. (more…)