Semprius has come up with three key innovations for cheaper solar power

A stacked solar cell made by Semprius

A stacked solar cell made by Semprius

Stacked solar cells could achieve more than 50 percent efficiency and 5 cent per kilowatt hour costs in 3 to 5 yearsSemprius has come up with three key innovations for cheaper solar power. 

Still the batteries – as far as we know, based on chemical reactions – need innovations quickly to take advantage of this great new technology.

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