Business Green: A secretive US startup specialising in energy and emissions management has revealed that it has raised $26m (£16m) in funding and put together a board dominated by influential political and business figures including former secretary of state Condoleezza Rice. The company, known as C3, was founded a year ago by Thomas Siebel, the entrepreneur who sold his business software firm Siebel to Oracle $5.7bn, and over the past two weeks has filed documents with the Securities and Exchange …