Dr. Margo Thorning, ACCF Senior Vice President and Chief Economist, testifies on behalf of the American Council for Capital Formation before the Senate Subcommittee on Energy, Natural Resources and Infrastructure in the Dirksen Building on Capitol Hill in Washington, DC, on Wednesday, December 14, 2011. Dr. Thoning highlighted the high costs of renewable energy sources compared to more traditional energy sources. Also shown as members of the Subcommittee are Senator Jeff Bingaman (D-New Mexico), Senator Tom Carper (D-Delaware), Senator John Cornyn (R-Texas), Senator John Kerry (D-Mass.), Senator Ron Wyden (D-Oregon), and Senator John Thune (R-South Dakota). Photo by Shealah Craighead..