United States Oil and Gas Downstream - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026-2031)

The united states oil and gas downstream market size in 2026 is estimated at USD 22.62 billion, growing from 2025 value of USD 21.76 billion with 2031 projections showing USD 27.46 billion, growing at 3.95% CAGR over 2026-2031. This report is Segmented by Type (Refineries and Petrochemical Plants), Product Type (Refined Petroleum Products, Petrochemicals, and Lubricants), and Distribution Channel (Direct Sales/Wholesale, Distributors/Commercial, and Retail). The Market Sizes and Forecasts are Provided in Terms of Value (USD).

United States Oil And Gas Downstream Market Trends and Insights

Rising Gasoline Demand from Sustained VMT Growth

U.S. VMT reached 3.26 trillion miles in 2023, a 2.1% year-over-year increase, and this momentum anchors the baseline transportation fuel demand even as EV penetration accelerates. E-commerce fulfillment and last-mile logistics are lifting diesel and gasoline consumption at a pace that counterbalances slower passenger-car volumes. Sun Belt states lead with annual VMT increases above 3%, propelled by population inflows and construction activity. The U.S. Department of Transportation projects that commercial-vehicle mileage will grow at double the pace of passenger travel through 2027, providing refiners with a reliable user base for gasoline, diesel, and jet fuel production. The predictable demand profile aids capacity-planning decisions and undergirds the 4.00% CAGR outlook for the United States oil and gas downstream market.

Planned Refinery Modernization & Capacity Additions

More than USD 15 billion in announced projects are revamping U.S. plants, with the Gulf Coast absorbing the largest share. ExxonMobil’s USD 2 billion Beaumont expansion adds 250,000 barrels per day (b/d) of throughput, while Chevron’s USD 475 million Pasadena revamp lifts capacity by 15% and equips the site to process heavier crudes. Marathon Petroleum’s USD 2.5 billion renewable-diesel build-out exemplifies the dual path of investing in both legacy and low-carbon fuel lines. New hydrocrackers and fluid catalytic crackers raise middle-distillate yields, improve energy efficiency by up to 8%, and future-proof plants for shifting crude slates. The modernization cycle expands the installed base that feeds the United States oil and gas downstream market while nudging average operating costs downward.

Accelerating EV Adoption Curbing Gasoline Demand

Electric-vehicle (EV) sales crossed 1.4 million units in 2023, taking 9.1% of total U.S. light-duty registrations. California leads with a 25% share, while Washington and Oregon account for over 15%, creating localized dips in gasoline demand. The USD 7.5 billion national charging-network rollout under the Infrastructure Investment and Jobs Act compresses adoption timelines, and purchase credits valid through 2032 keep consumer interest high. Fleet operators in dense urban corridors are electrifying vans and step-trucks to capture lifecycle savings, reducing diesel demand on specific routes.

Other drivers and restraints analyzed in the detailed report include:

• Surging Petrochemical Feedstock Demand
• Expansion of Renewable Diesel & SAF Projects
• Federal & State Decarbonization Compliance Costs

Segment Analysis

Plants classified as refineries generated 56.75% of 2025 revenue inside the United States oil and gas downstream market, but petrochemical facilities are expected to advance at a 4.12% CAGR to 2031, the fastest pace among asset types. ExxonMobil's USD 2 billion Baytown investment underscores the strategic migration toward integrated footprints that share utilities, lower feedstock transport costs, and unlock high-margin chemical streams.

Integrated complexes can divert naphtha, butane, and ethane toward ethylene or propylene production when crack spreads narrow, cushioning cash flow. Historical data indicate that petrochemical plants are expected to grow at a rate of 2.8% annually from 2019 to 2024; the acceleration to 4.12% is attributed to the advantages of North American natural-gas liquids and expanding exports to Asia. Independent refineries must decide whether to pursue similar upgrades or risk compressing profitability in fuel-only models. The shift bolsters the long-term competitiveness of diversified operators and enhances the depth of the United States' oil and gas downstream market.

Complete Report Scope:

• By Type
  • Refineries
  • Petrochemical Plants
• By Product Type
  • Refined Petroleum Products
  • Petrochemicals
  • Lubricants
• By Distribution Channel
  • Direct Sales/Wholesale
  • Distributors/Commercial
  • Retail

List of Companies Covered in this Report:

• Marathon Petroleum Corporation
• Valero Energy Corporation
• Phillips 66
• Exxon Mobil Corporation
• Chevron Corporation
• Shell plc
• PBF Energy Inc.
• HF Sinclair Corporation
• CITGO Petroleum Corporation
• HollyFrontier Cheyenne Refining (HF Sinclair)
• Delek US Holdings
• Koch Industries - Flint Hills Resources
• LyondellBasell (Houston Refining)
• Calumet Specialty Product Partners
• Monroe Energy (Delta Air Lines)
• Hunt Refining Company
• U.S. Oil & Refining Co.
• Par Pacific Holdings
• Chalmette Refining (PBF/Torres)
• Delta’s Trainer Refinery (Monroe)

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support