Six months after Solyndra's bankruptcy, the resulting controversy is affecting other companies that were hoping to secure loans from the Department of Energy. Lawmakers want to know whether the DOE loan program has stalled out -- and whether reforms are needed to clarify the mission and the risks for taxpayers.

In an October order, the Federal Energy Regulatory Commission (FERC) trimmed the authorized rate incentive for the RITELine transmission project by one-third. The action prompted Commissioner Moeller to ask whether the commission is retreating from its incentive policy on needed transmission lines.