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Silver Spring Networks

Silver Spring Networks

Redwood City, Calif.

Silver Spring, sometimes dubbed the "Cisco of the smart grid," creates technology allowing every major energy-using device to have an Internet address so it can be controlled by both building occupants and utilities to maximize efficiency. The company has garnered major investors, along with partners and customers such as ComEd, General Electric (GE), FPL (FPL), and PG&E.

Key investors: Foundation Capital, JVB Properties, Kleiner Perkins, Northgate Capital