The US National Renewable Energy Laboratory (NREL) has created thin film solar panels that are very close to competing with their more traditional silicon-based cousins.
"The copper indium gallium diselenide (CIGS) thin-film solar cell recently reached 19.9 percent efficiency in testing at the lab, setting a new world record."
This means standard solar cells know and PV Cells are getting a run for there money. The current standard or 2nd generation Solar Cells are quickly being replaced by the upcoming 3rd generation PV Cells which may surpass current efficiency within 18 months time. The race is heating up!
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