Until recently, California consistently had some of the highest gas prices in the US, in spite of having refineries.
I paid $2.69 a gallon this week.
California Oil Refinery Locations and Capacities
Classification of refiners based on crude oil capacity (barrels per day)
Information as of November 2014
Refinery Name Barrels Per Day CARB Diesel CARB Gas
Tesoro-Carson 240,000 Yes. YES
Chevron U.S.A. Inc.,
El Segundo Refinery 276,000 Yes Yes
Chevron U.S.A. Inc.,
Richmond Refinery 245,271 Yes Yes
Tesoro Refining & Marketing
Company, Golden Eagle
Refinery. 166,000 Yes. Yes
Shell Oil Products US, Martinez Refinery 156,400 Yes Yes
ExxonMobil Refining & Supply Company,
Torrance Refinery 149,500 Yes Yes
Valero Benicia Refinery 132,000 Yes Yes
Phillips 66, Wilmington Refinery 139,000 Yes Yes
Tesoro Refining & Marketing Company,
Wilmington Refinery 103,800 Yes Yes
Valero Wilmington Refinery 78,000 Yes Yes
Phillips 66, Rodeo San Francisco Refinery 78,400 Yes Yes
ALON USA, Bakersfield Refinery 66,000 Yes Yes
Paramount Petroleum Corporation,
Paramount Refinery 50,000 No Yes
Phillips 66, Santa Maria Refinery 41,800 No No
Edgington Oil Company, Long Beach Refinery 26,000 No No
Kern Oil & Refining Company, Bakersfield
Refinery. 26,000. Yes. No
San Joaquin Refining Company Inc.,
Bakersfield refinery. 15,000 Yes No
Greka Energy, Santa Maria Refinery 9,500 No No
Lunday Thagard, South Gate Refinery 8,500 No No
Valero Wilmington Asphalt Refinery 6,300 No No
Note: Data on this table represents total crude oil capacity not gasoline, distillate production, diesel fuel production or production of other products. Production potential varies depending on time of year and status of the refinery. A rule of thumb is that roughly 50 percent of total capacity is gasoline production (about 1.0 million barrels of gasoline - 42 million gallons - is produced per day).
Source: California Energy Commission Fuels Office Staff.
Terminal Facilities
California's nearly 100 terminals receive petroleum and petroleum products by tanker, barge, pipeline, rail or truck. Most of California's terminals are marine terminals. At these facilities petroleum or product is transferred from or to tankers or barges. Tankers loaded with Alaska North Slope petroleum, for example, enter marine terminals in northern and southern California, where the crude oil is then sent to refineries by pipeline for processing. An example of pipeline receipts of petroleum at a terminal is heavy California petroleum produced in the Bakersfield area that is sent by pipeline to a refinery at Martinez.
Terminals also serve as refiner's wholesale distribution points for products. Product, such as gasoline, is sold to distributors (jobbers) who then sell to consumers through the distributors' own retail stations. The distributor may also resell the gasoline to other station dealers. Gasoline can also be sold directly to station dealers from the terminal. The marketing structure differs depending on the type of product being sold.
http://energyalmanac.ca.gov/petroleum/refineries.html