A new solar technology:

Looking at the history of solar power, one of the biggest obstacles to its broad acceptance and application has been the high cost of manufacturing photovoltaic cells, and the relatively low output. Sol Focus has a solution that they think could revolutionize the industry, and it's so obvious you have to wonder why it took so long. Rather than make a large panel of pricey semi-conductors, they use comparatively cheap aluminum and glass mirrors to concentrate sunlight onto a tiny chip of photovoltaic, both reducing the cost of the unit, and increasing the efficiency of electricity production.

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