Hey, it wasn’t his money that was lost on companies like Solyndra and Ener1.

(E2 Wire) — Just days before the White House unveils a post-Solyndra review of the Energy Department’s loan program, Energy Secretary Steven Chu defended the program Wednesday against sustained Republican attacks.

Chu said the Energy Department made a series of changes to the program before and after the collapse of Solyndra, the California solar panel maker that received a $535 million loan guarantee in 2009.

“Long before Solyndra became a common word, we have been looking at how, in everything we do in the Department of Energy, to constantly improve how we do these processes,” he said.

Chu promised that the Energy Department will continue working to improve the program.

“Certainly, there’s a lot going forward that the Department of Energy has to be on top of and make sure that the taxpayer investments are protected as much as possible while trying to help these companies,” Chu told reporters after delivering remarks at an energy conference.

“There’s going to be a lot of work going forward with the loan program.”