Petroleum Data, Facts, and Statistics

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Under the Petroleum Industry Information Reporting Act (PIIRA), the Energy Commission collects data from refiners, producers, petroleum product transporters and marketers, and petroleum pipeline and terminal operators. Each entity is required to submit to the Energy Commission weekly, monthly, and annual reports on receipts, inventory levels, imports, exports, prices, and transportation sources. The Energy Commission analyzes and interprets this information to provide policy makers and the public with key insights on oil supply and demand fluctuations and potential issues. Data, Facts, and Statistics provide specific data and summaries.

California Petroleum Industry and Information

Overview of the Petroleum Industry Information Reporting Act


Refining & Processing


Fuel Price Overview

March 25, 2019 - Continuing the climb for a eighth week. Regular is higher than last weeks price by several cents.

The average price in California for regular gasoline increased 12.5-cents from the previous week. The average statewide price for regular was $3.389. Mid-grade and premium prices increased as well.

The national average for self-serve regular is at $2.623, up 7.5 cents from the previous week.This is 76.6 cents lower than the price of regular in California.

California Retail
Gasoline Prices Per Gallon
Grade 3/18/2019 3/25/2019
Regular $3.264 $3.389
Mid-Grade $3.448 $3.580
Premium $3.567 $3.693
California Retail
Diesel Prices Per Gallon
Region 3/13/2019 3/20/2019
Northern CA $3.755 $3.781
Central CA $3.657 $3.675
Southern CA $3.793 $3.789

Reserves and Production

The U.S. Energy Information Administration (EIA) collects, analyzes, and disseminates independent and impartial energy information. You can find petroleum prices, production and use statistics, and analysis on their Petroleum and Other Liquids page.

The California Department of Conservation, Division of Oil, Gas & Geothermal Resources (DOGGR) oversees the drilling, operation, maintenance, and plugging and abandonment of oil, natural gas, and geothermal wells. You can find information regarding oil production, and well maps on the DOGGR website.