This excerpt taken from the GOOG DEF 14A filed Mar 24, 2009.
Investment in AltaRock Energy, Inc.
In August 2008, Google invested approximately $6.25 million in the Series B preferred stock financing of AltaRock Energy, Inc., a renewable energy development company focused on the research and development of geothermal systems. KPCB Holdings, Inc., as nominee for certain funds of Kleiner Perkins Caufield & Byers and several of the managers of these funds, holds more than 10% of the outstanding shares of AltaRock Energy. L. John Doerr, who is a member of the board of directors of Google, is a managing director of these funds and the general partner of certain Kleiner Perkins Caufield & Byers funds.
Googles Audit Committee reviewed and approved these transactions as part of Googles procedures for entering into transactions with related parties.