In this Sept. 23, 2011 file photo, CEO Brian Harrison of the bankrupt solar energy company Solyndra invokes his Fifth Amendment right to avoid self-incrimination as he appears before the the House Energy Commitee's Oversight and Investigations Subcommittee which is examining Solyndra's government loan, on Capitol Hill in Washington. Harrison, the CEO of a California solar energy company that sought bankruptcy protection after receiving a $528 million loan guarantee from the Obama administration has resigned Friday, Oct. 7, 2011. (AP Photo/J. Scott Applewhite, File)