President Obama announced his intent to nominate David Danielson, a program director at the Energy Department’s Advanced Research Projects Agency-Energy (ARPA-E) on July 27 to be assistant secretary for the office of Energy Efficiency and Renewable Energy at the Department of Energy. Prior to working at ARPA-E, Mr. Danielson was clean energy venture capitalist at General Catalyst Partners in Boston, where he co-founded the firm’s clean energy investment practice.