The head of the US Department of Energy (DOE) Loan Programs Office has resigned in the midst of the controversy surrounding the bankruptcy of solar panel manufacturer Solyndra.

Jonathan Silver was the executive director of the DOE’s unit responsible for making the $535 million loan guarantee to Solyndra, although he was not with the department when the guarantee was issued in September 2009.

Silver informed Energy Secretary Steven Chu of his plans to resign after the Section