Google isn't the only one hedging its bets between investment in huge centralized solar thermal power plants and putting serious money into distributed solar photovoltaics. Not too long after the DOE announced $2 billion in loan guarantees for solar thermal, funded by 2009 stimulus money, it is also putting up some $1.4bn in loan guarantees for what is said to be the country's largest solar rooftop project—installing over 733MW of solar power on warehouse roofs across the country:
Project Amp will enable a wide distribution of solar power over approximately 750 existing rooftops owned and managed by Prologis. NRG Energy is the lead investor for the first phase of the project, which includes a 15.4 MW installation in Southern California. Phase 1 will utilize at least 90 percent U.S. sourced components. The power from Phase 1 will be sold to Southern California Edison. Additional installations will be built in up to 28 states and the District of Columbia.