Profitability remains the primary driver, with facilities closing when maintenance costs and regulatory compliance outweigh operational revenue. This area accounts for over 50% of the nation's total refining capacity, hosting the largest and most complex refineries capable of processing heavy crude oils.
How Many Oil Refineries Operate in the US Today
Refinery conversions to process different crude types or produce renewable fuels are becoming more common, indicating an adaptation to future energy landscapes. Environmental regulations, particularly those concerning emissions and waste management, have also significantly impacted the viability of older, less-efficient plants.
Region Number of Refineries Key States Gulf Coast ~60 Texas, Louisiana, Mississippi West Coast ~15 California, Washington, Oregon Midwest ~35 Illinois, Ohio, Indiana East Coast ~15 New York, Pennsylvania, New Jersey Rocky Mountains ~5 Colorado, Wyoming Other ~5 Various Capacity and Operational Scale \ The 135 refineries collectively process an average of approximately 18 million barrels of crude oil per day. The Midwest, particularly around Illinois and Ohio, supports a network of refineries focused on processing lighter crude grades and supplying regional fuel distribution centers.
How Many Oil Refineries Operate in the US Today
This number represents a slight fluctuation from previous years, as some facilities have undergone expansions while others have been idled or retired due to economic pressures. West Coast and Midwest On the West Coast, refineries in California, Washington, and Oregon serve significant markets, though they face stricter environmental regulations.
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