California Governor Jerry Brown to sign aggressive climate change bill

California is doubling down in its fight against global warming.

Gov. Jerry Brown is expected on Wednesday to sign an ambitious climate-change measure to increase California’s renewable electricity use to 50 percent and double energy efficiency in existing buildings by 2030.

The governor and Democratic legislative leaders wanted to include a provision in the bill to cut petroleum use by half, but they met fierce opposition from the oil lobby.

Brown characterized the loss as a short-term setback and said the state will continue to cut oil use through regulatory action.

California is already on target to generate at least a third of its electricity from renewable sources by 2020.

The signing of the bill authored by Democratic state Senate President Pro Tem Kevin de Leon is set for Los Angeles.