Reuters: California committed to getting a third of its electricity from renewable sources by 2020 in a Monday executive order by Gov. Arnold Schwarzenegger. California, which often leads the federal government on environmental issues, already had committed to produce 20 percent of its power from renewables such as wind and solar by 2010 as part of its plan to cut emissions of carbon that contribute to global warming. California’s Air Resources Board had recommended the additional 2020 …