Google has entered into an agreement with Berkshire Hathaway electric utility NV Energy to power its Nevada data centers with advanced geothermal electricity, the U.S. technology company said on Wednesday. The deal, which has been sent to state utility regulators for approval, would increase the amount of carbon-free geothermal electricity injected into the local power grid for Google's operations to 115 megawatts from 3.5 megawatts in about six years, Google said in a statement. The agreemen...