Colleague Laura Diaz Anadon of the Harvard Kennedy School and I have tracked the U.S. energy RD&D budgets for the past several years, building upon earlier work by Paul de Sa, Ambuj Sagar, and John Holdren. We have now updated the data to include the Obama Administration’s budget request for FY13. In the database, we also provide some limited data now on deployment. Notable changes in this year’s request are a significant ramp-down in coal R&D, a ramp up in energy efficiency, and the Obama Administration’s large request for a HomeStar program to accelerate deployment of efficient building technologies. Charts, including the one below, are available within the Excel workbook.