Watch out Opower. Carbon and energy software player C3 — the quiet firm started by Thomas Siebel and which counts Condoleezza Rice as a director — has acquired another energy software startup Efficiency 2.0.
Thomas Siebel unveiled customers and features of his stealthy carbon software company C3 at the Fortune Brainstorm Green event. It’s not a software product, said Siebel, it’s a $150 million effort that will take a decade to build and is more like a division of SAP.
Energy resource management startup C3 has some major names from the tech and policy world in its corner, and is amassing close to $50 million in funding, according to an SEC filing today, but the company is still largely in stealth mode.
