As House Republicans press for information about additional government-backed loans to the solar energy sector, Silicon Valley–based Wilson Sonsini Goodrich & Rosati is moving aggressively to refute allegations that its role advising bankrupt solar panel maker Solyndra created a conflict of interest.

Solyndra’s failure has generated a firestorm of controversy, with House Republicans claiming that political connections were behind the Obama adminstration’s decision to pump taxpayer money into a questionable project it hailed as a success story even as the company’s finances were crumbling.