California is home to some of the highest gas prices in the United States, according to AAA.
The national average for a gallon of regular unleaded was $3.40 as of Thursday, according to the organization’s data. In California, the average was $4.87, more than any other state.
Several factors go into what drivers pay for gas, including refining costs, taxes, distribution and marketing, and crude oil prices, according to the U.S. Energy Information Administration.
High taxes are partly to blame in California. The state has the highest gasoline taxes in the nation, according to EIA.
But there’s more to the story.
An isolated market and a special fuel blend
California requires a special blend of gasoline that reduces pollution — and costs more money.
“California also has seen a drop of 66% in the amount of refineries in operation from where we were 40 years ago,” said Patrick De Haan, head of petroleum analysis for GasBuddy. “So there are fewer refineries producing this special blend of gasoline.”
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California has an isolated refinery market. The special fuel blend that is consumed in California is produced by 11 major refineries within the state, according to the California Energy Commission.
“Not many other states use the same blend of fuel, which limits California’s supply when there’s an outage, when there’s an issue at one of our refineries,” Anlleyn Venegas, a senior public affairs specialist at AAA, told CNBC.
The isolated market means that any outages will lead to volatility in prices at the pump.
“Part of the reason why prices have been so high is that California has really restricted the ability for refineries to expand and grow,” said De Haan. “California has been rather hostile to refinery expansions or oil industry investments, trying to push them away and transition California to more…
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