Severin Borenstein on California Gas Prices

“There are some quantifiable sources of the California premium. Higher state gas taxes are one reason. The state’s clean air policies are another. These include a cap-and-trade program for greenhouse-gas emissions, a low-carbon fuel standard and a fee for the abatement of leaking underground storage. California also mandates a cleaner-burning gasoline, which adds around 10 cents a gallon.”