September 2007
Technology Review: Making Cheaper Solar Cells
Powered by $77 million in new investment, startup Heliovolt, based in Austin, TX, will build a factory next year for mass-producing a new type of solar cell that could, in much of the United States, make solar electricity as cheap as electricity from the
April 2007
PowerFilm Inc. - The worlds most lightweight and flexible solar panels
tent made from solar cells
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(2 marks)