text: The Golden State already has some expensive GHG reduction requirements. For example, the California Air Resources Board predicts its carbon dioxide limits for new automobiles will add $1,000 to the cost of a car. Californians must get 20 percent of their electricity from renewable sources by 2017, raising the costs of power production. If approved, the Governor's "million solar roofs" program will stick the state's electricity ratepayers with a surcharge to subsidize solar electricity systems.