OPower Raises $50M from Kleiner Perkins, Others
Smart grid software company expects to quadruple its customer base in 2011.
Smart grid software company expects to quadruple its customer base in 2011.
GE and Switzerland's ABB participated in the funding round.
Company has raised $185 million since 2005.
EcoFactor won the business plan prize of the Cleantech Open in 2009.
Company's permanent magnet generators are said to be simpler and more efficient for wind turbines.
Plug-in hybrid maker adds new venture capital investor in largest round of funding to date.