As the landscape of energy production continues to evolve, recent data from the U.S. Energy Information Administration (EIA) reveals key insights into the operational capacity of U.S. oil refineries. The annual Refinery Capacity Report, released on June 29, 2026, indicates a slight decline in total operable atmospheric distillation capacity, which may have significant implications for small business owners across various sectors.
The U.S. operable atmospheric distillation capacity is measured at 18.2 million barrels per calendar day (b/cd)—a reduction of approximately 250,000 b/cd (about 1%) compared to the previous year. This statistic is crucial for small businesses that rely on the fuel and byproducts produced by these refineries. A decrease in refinery capacity could lead to tighter fuel supplies, which in turn may influence operational costs.
The report also notes a decrease in the number of operable refineries, which now stands at 130—two fewer than in 2025. Two significant closures impacted this number: LyondellBasell’s refinery in Houston and Phillips 66’s facility in Los Angeles. The former had a capacity of 263,776 b/cd and its closure represents a 3% reduction in the capacity of the U.S. Gulf Coast region. Meanwhile, the Phillips 66 refinery marked a 5% drop in capacity on the West Coast, an area already known for limited refining capacity.
For small business owners, these changes may underscore the importance of monitoring fuel prices and availability. Less refinery capacity can lead to increased fuel costs, affecting transportation and logistics for businesses reliant on fuel to deliver their products and services.
The report offers an important distinction between two measures of refinery capacity: calendar day capacity, which considers both scheduled and unscheduled maintenance, and stream day capacity, which reflects maximum processing capabilities under optimal conditions. This insider knowledge may assist businesses in evaluating the efficiency and reliability of their fuel sources. It’s worth noting that stream day capacity typically exceeds calendar day capacity by about 6%, offering a fuller picture of refinery efficiency.
Moreover, the closures have not been solely detrimental; marginal capacity increases at existing refineries partially offset losses from the closed facilities. For example, the three largest refiners in the U.S.—Marathon, Valero, and ExxonMobil—reported slight capacity increases of less than 1%. These improvements could be attributed to small-scale process optimizations that boost overall production without requiring extensive capital investment.
Of particular concern to small business owners in energy-intensive industries is the impact of these changes on the West Coast. With limited pipeline capacity to transport fuel from Gulf Coast refineries, reductions in refining capabilities can have more pronounced effects on fuel supply and pricing in this region than elsewhere.
“Although the effects of these refinery closures seem localized, they bring to light broader vulnerabilities within the U.S. energy infrastructure,” said an EIA spokesperson. Small businesses, particularly those in transportation, manufacturing, and construction, may find themselves facing increased costs and operational challenges as regional fuel supplies tighten.
Beyond just the immediate practical implications, the ongoing shifts in refinery capacity may also signal broader trends in the U.S. energy landscape. As the country continues to transition towards cleaner energy sources, these adjustments may foreshadow more substantial changes in fuel production and consumption patterns.
As small business owners navigate this evolving landscape, it may be beneficial to stay informed and prepared. Creating contingency plans for fuel procurement or exploring alternative energy sources can provide some resilience against fluctuating fuel prices and availability issues brought on by these refinery capacity changes.
The 2026 Refinery Capacity Report sheds light on a critical aspect of the U.S. energy sector and its ripple effects could touch many small businesses across the country. Business owners are encouraged to stay aware of these developments, which could impact their operational strategies and expenses moving forward.
For more detailed information, you can access the original report here.
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