Petroleum Refineries (United States) — NAICS 32411

An investor's primer at the NAICS-industry (5-digit) level. Figures are U.S.-specific unless noted. Reported facts are cited; forward-looking statements are labeled as judgments or outlooks. This is a short rollup page — for full detail see the child primer for NAICS 324110.

1. Overview

NAICS 32411 — Petroleum Refineries — is the industry that takes crude oil and turns it into the fuels and feedstocks a modern economy runs on: gasoline, diesel, jet fuel, heating oil, asphalt, and the building blocks for plastics and chemicals. It is a capital-intensive, cyclical, commodity-processing business — a refinery is a multibillion-dollar chemical plant that profits from the spread between what it pays for crude and what it earns selling refined products, not from the price of oil itself. [1][2]

Why it matters to an investor: refining is one of the most cash-generative — and most volatile — links in the energy chain, and it is a structurally shrinking U.S. industry. No major new refinery with significant downstream conversion capacity has been built since Marathon's 1977 Garyville plant (though a 45,000-barrel-per-day Galveston refinery began operating in 2022). [3] Capacity is closing faster than it is added. Because this level contains only one child industry, everything an investor needs sits in the child primer; this page exists to give the level's own federal statistics and point you there.

2. What's inside — and why this level equals its one child

NAICS is a nested hierarchy (North American Industry Classification System — the official U.S. government scheme for grouping businesses). The 5-digit "industry" 32411 contains exactly one 6-digit "national industry":

• 324110 — Petroleum Refineries — establishments primarily engaged in refining crude petroleum into refined products through distillation, cracking, reforming, and treating.

When a 5-digit industry has a single 6-digit child, the two are definitionally identical: same scope, same establishments, same federal statistics. There is no residual "other" category and nothing is split off. So NAICS 32411 is NAICS 324110 — the extra digit ("0") simply signals that the United States did not subdivide the industry further. Everything below is therefore the child's story, summarized; the full treatment (structure, companies, margins, regulation, risks) lives in the 324110 primer.

3. How big it is (this level's rollup figures)

Because 32411 equals 324110, the level's federal statistics are simply the child's, reproduced here as this level's ground truth.

Our federal statistics (U.S. Census Bureau / SBA):

SBA (U.S. Small Business Administration) small-business size standard for this industry: 1,500 employees. [4]

How to read these numbers. This is a small-headcount, enormous-revenue industry: about 55,000 workers against $825 billion in 2022 shipments — roughly $15 million of output per employee, reflecting extreme capital intensity. Concentration is high: four firms account for 52% of receipts and twenty for 95%.

Caveats.

• The receipts figure is price-inflated. 2022 was a record year for crude prices and refining margins, so $825 billion overstates a "normal" year; revenue here rises and falls with oil prices.
• Little undercount, but hidden ownership. Unlike industries dominated by tiny operators, this one is captured well by federal statistics — the "50 firms" is close to the real number of distinct refining companies. The nuance runs the other way: some refineries belong to integrated majors (ExxonMobil, Chevron) classified elsewhere, and to foreign/state owners (Saudi Aramco) and private firms (Koch), so the pure-play public "refining sector" a stock screener shows is only part of the picture. [1][2]
• Establishment vs. refinery counts differ. Census counts 143 establishments (2023) [1]; the Energy Information Administration (EIA) counts 130 operable refineries (128 operating, 2 idle) as of January 1, 2026, with 18.160 million barrels per calendar day of capacity. [5][6] The gap reflects different definitions (Census includes some non-production and administrative units; EIA counts physical operable plants).

Physical and geographic concentration: The Gulf Coast (PADD 3) is the system's center, holding approximately 9.877 million barrels per calendar day of capacity on January 1, 2026 — 54.4% of the national total. [7][6]

4. Where the value concentrates

With only one child, all of the value sits in 324110. Ownership is concentrated: Marathon Petroleum controlled 2.986 million barrels per calendar day of capacity as of January 1, 2026, Valero 2.231 million, ExxonMobil 1.967 million, and Phillips 66 1.220 million — their combined 8.404 million barrels per day equaled 46.3% of U.S. capacity. Chevron followed with 1.060 million and PBF Energy with 1.042 million barrels per day. [8]

Investable exposure clusters in these large public refiners — Marathon Petroleum (MPC), Valero (VLO), and Phillips 66 (PSX) as the biggest, most liquid pure plays — plus diversified exposure through integrated majors (ExxonMobil, XOM; Chevron, CVX). The single largest U.S. refinery, Motiva's Port Arthur, Texas plant (EIA calendar-day capacity of approximately 654,000–656,400 barrels per day), is owned by Saudi Aramco and is not directly investable. [9][10] See the child primer's investable-universe section for the full roster (including PBF Energy, HF Sinclair, Delek, CVR Energy, Par Pacific) and market-cap figures. [11][12][13]

5. How the money works

Refiners earn a margin — the gap between crude cost in and product value out — times the barrels they run, not a bet on oil going up. The core gauge is the crack spread (named for the cracking process that breaks heavy crude into lighter fuels); the most-quoted version is the 3-2-1 crack spread, the gross margin from turning 3 barrels of crude into 2 of gasoline and 1 of distillate. A crack spread is not refinery EBITDA — it omits substantial costs (secondary products, freight, energy, environmental credits, maintenance, depreciation). [14][15] High fixed costs make running plants full essential, so owners chase high utilization (throughput ÷ capacity), which averaged about 90.6% in 2024 and rose to 92.0% in 2025, with weekly summer peaks above 95%. [16][17]

In good years refiners generate large free cash flow and return most of it via dividends and buybacks. The cycle's severity is stark: Valero's refining operating income fell from $15.803 billion in 2022 to $11.511 billion in 2023 to $3.971 billion in 2024 and $4.040 billion in 2025. [18][19] The mechanics — crack spread math, Nelson complexity, RIN costs, a worked earnings example — are covered in full in the 324110 primer.

6. Demand drivers

Refined-product demand is demand for transportation and industrial energy: gasoline (the largest product, 8.906 million barrels per day in 2025, down from 8.967 million b/d in 2024 and still below pre-pandemic ~9.4 million b/d), distillate (diesel and heating oil, 3.894 million b/d in 2025 — a barometer of freight and industry), and jet fuel (1.725 million b/d in 2025, tracking air travel). [20][21] The U.S. is a net exporter of refined products (~2.4 million b/d in 2025), with gasoline exports of 902,000 b/d (54% to Mexico) and jet-fuel exports of 219,000 b/d, which lets refiners sell into global demand even as domestic gasoline use plateaus. [22][23] The long-run swing factor is the energy transition: rising fuel economy and electric-vehicle (EV) adoption pressure gasoline over time, while diesel and jet fuel are seen as stickier.

7. Regulation

Refining is heavily regulated on environmental, safety, and fuel-quality grounds. The key regimes — all detailed in the child primer — are the Clean Air Act fuel standards administered by the Environmental Protection Agency (EPA) [24]; the Renewable Fuel Standard (RFS) with its tradable RINs (Renewable Identification Numbers) — EPA's finalized total applicable renewable-fuel requirement is 26.81 billion RINs for 2026 and 27.02 billion for 2027 [25]; Small Refinery Exemptions (in August 2025 EPA acted on 175 petitions, granting full or partial relief on 140 of them) [26]; California's strict Low Carbon Fuel Standard (LCFS); process-safety and greenhouse-gas rules; and the Jones Act governing domestic shipping. [27] Permitting a new refinery is effectively prohibitive, which is why the U.S. asset base only shrinks.

8. Consolidation

The industry is concentrated and consolidating: four firms hold 52% of receipts and twenty hold 95%, the product of decades of mergers (e.g., Marathon–Andeavor, 2018). [2] With no new refineries being built, the competitive game is running existing assets better and closing weak ones — recent closures include LyondellBasell's ~264,000 b/cd Houston plant (March 2025), Phillips 66's ~139,000 b/cd Los Angeles refinery (October 2025), and Valero's ~145,000 b/d Benicia, California refinery (ceasing 2026), together removing 400,000+ barrels per day. [28][29] Regional imbalance matters: the Gulf Coast (PADD 3) produces far more fuel than it consumes and exports the surplus, while the West Coast (PADD 5) is isolated, high-cost, and shrinking under California policy.

9. Risks

The child primer covers these in full; in brief: margin cyclicality (crack spreads swing violently — a record year and a loss year can be 18 months apart); energy-transition demand risk (EVs and efficiency eroding gasoline over the long term, though substitution risk is uneven — road gasoline is most exposed while aviation, heavy freight, and petrochemical feedstocks have slower substitution paths); regulatory and policy shifts (RIN prices, exemption decisions, California rules); operational hazards (fires, storms, unplanned outages); feedstock and geopolitical exposure (crude access, sanctions, OPEC+ decisions); capital intensity (high break-even volumes bite hard in downturns); and labor constraints (experienced operators, technicians, and turnaround contractors are difficult to replace quickly). [30]

10. How to invest, and the outlook

Public-market routes. The cleanest exposure is the large independent refiners — Marathon Petroleum (MPC), Valero (VLO), Phillips 66 (PSX) — with smaller, higher-beta plays in PBF Energy (PBF), HF Sinclair (DINO), Delek (DK), CVR Energy (CVI), and Par Pacific (PARR); integrated majors ExxonMobil (XOM) and Chevron (CVX) offer diversified exposure where refining is one cyclical segment. Capital returns (dividends plus buybacks) are central to the thesis, and these are classic "buy when margins and valuations are depressed" cyclicals, not steady compounders. [11][12][13]

Private-market routes. Direct refinery ownership is effectively closed to individuals — assets are held by public companies, foreign national oil companies (Saudi Aramco/Motiva), and private conglomerates (Koch/Flint Hills, with Pine Bend alone at 375,000 bpd stated crude capacity). [31] Entry happens at institutional scale, e.g. the ~$5.9 billion 2025 Citgo auction. [32]

Outlook (forward-looking). The bull case is tightening supply — continued closures against still-large demand — supporting survivors' crack spreads, with exports (especially Gulf Coast diesel) as the release valve for flat domestic gasoline. The overhang is the transition clock: how fast EVs erode gasoline demand shapes terminal-value assumptions even while near-term cash flows stay strong.

For everything in more depth, see the child primer: NAICS 324110 — Petroleum Refineries.

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Sources

Drawn from the child primer (NAICS 324110).

1. U.S. Census Bureau, County Business Patterns (CBP), 2023 — establishments (143), employment (55,064), annual payroll ($8.92B), Q1 payroll ($2.95B) for NAICS 324110/32411. https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau, 2022 Economic Census — Concentration Ratios / Selected Statistics by Industry — receipts ($825.2B), firms (50), CR4/CR8/CR20/CR50, HHI (853.2). https://www.census.gov/programs-surveys/economic-census.html
3. U.S. Energy Information Administration, "When was the last refinery built in the United States?" FAQ — 45,000 bpd Galveston refinery in 2022; Marathon Garyville 1977 newest with significant conversion capacity. https://www.eia.gov/tools/faqs/faq.php?id=29&t=10
4. U.S. Small Business Administration, Table of Small Business Size Standards, 2023 — 1,500-employee standard. https://www.sba.gov/document/support-table-size-standards
5. U.S. Energy Information Administration, "U.S. refining capacity decreased during 2025," Today in Energy, 2026 — 130 operable refineries on Jan 1, 2026. https://www.eia.gov/todayinenergy/detail.php?id=67807
6. U.S. Energy Information Administration, Refinery capacity data series — national capacity 18.160 million b/cd, Jan 1, 2026. https://www.eia.gov/dnav/pet/pet_pnp_cap1_dcu_nus_a.htm
7. U.S. Energy Information Administration, Gulf Coast (PADD 3) refinery capacity data — 9.877 million b/cd, 54.4% of national capacity. https://www.eia.gov/dnav/pet/pet_pnp_cap1_dcu_R30_a.htm
8. U.S. Energy Information Administration, Refinery Capacity Report Table 5 — capacity by company: Marathon 2.986M, Valero 2.231M, ExxonMobil 1.967M, Phillips 66 1.220M, Chevron 1.060M, PBF 1.042M b/cd. https://www.eia.gov/petroleum/refinerycapacity/table5.pdf
9. Bloomberg, "Aramco's Motiva Expands Texas Refinery to Become Largest in US," Feb 2025 — Port Arthur ~654,000 bpd, Saudi Aramco ownership. https://www.bloomberg.com/news/articles/2025-02-11/
10. Motiva Enterprises, "About Us" — Port Arthur total throughput capability of 730,000 bpd. https://www.motiva.com/about-us
11. Disfold, "Top largest US Oil & Gas Refining & Marketing Companies 2026" — market caps for Phillips 66, Valero, Marathon, Delek. https://disfold.com/united-states/industry/oil-gas-refining-marketing/companies/
12. PBF Energy, corporate refineries page and 2025 10-K — ~1.0M bpd across ~7 refineries. https://www.pbfenergy.com/refineries/
13. PitchBook / SeekingAlpha, HF Sinclair company profile, 2026 — ~678,000–716,000 bpd across 7 refineries. https://pitchbook.com/profiles/company/41039-56
14. U.S. Energy Information Administration, "3:2:1 Crack Spread" explainer, 2025. https://www.eia.gov/todayinenergy/includes/crackspread_explain.php
15. U.S. Energy Information Administration, "What is the crack spread?" Today in Energy — crack spread does not equal refinery profit, excludes secondary products and operating costs. https://www.eia.gov/todayinenergy/detail.php?id=1630
16. BOE Report / EIA, "US refinery utilization hits highest in over two years," 2025 — 2024 annual utilization ~90.6%, weekly peaks >95% in 2025. https://boereport.com/2025/07/23/us-refinery-utilization-hits-to-highest-in-over-two-years-eia-says/
17. U.S. Energy Information Administration, Annual utilization data series — 92.0% in 2025. https://www.eia.gov/dnav/pet/PET_PNP_UNC_A_%28NA%29_YUP_PCT_A.htm
18. Valero Energy, 2023 Form 10-K — refining operating income $11.511B (2023), $15.803B (2022). https://www.sec.gov/Archives/edgar/data/1035002/000103500224000007/vlo-20231231.htm
19. Valero Energy, 2025 Form 10-K — refining operating income $4.040B (2025), $3.971B (2024). https://www.sec.gov/Archives/edgar/data/1035002/000162828026011499/vlo-20251231.htm
20. U.S. Energy Information Administration, "Transportation fuel demand remains below pre-pandemic levels," Today in Energy, 2025. https://www.eia.gov/todayinenergy/detail.php?id=66005
21. U.S. Energy Information Administration, Product supplied data series — 2025 gasoline 8.906M b/d, distillate 3.894M b/d, jet 1.725M b/d. https://www.eia.gov/dnav/pet/pet_cons_psup_dc_nus_mbblpd_a.htm
22. BIC Magazine / U.S. Energy Information Administration, "U.S. gasoline export increased slightly in 2025," 2025 — refined-product exports ~2.4M b/d. https://www.bicmagazine.com/industry/refining-petrochem/us-gasoline-export-increased-slightly-in-2025/
23. U.S. Energy Information Administration, "U.S. transportation fuel exports grew in 2025," Today in Energy — gasoline exports 902,000 b/d, jet 219,000 b/d; Mexico 54% of gasoline exports. https://www.eia.gov/todayinenergy/detail.php?id=67304
24. U.S. Environmental Protection Agency, "Clean Air Act Standards and Guidelines for Petroleum Refineries" — CAA requirements for refineries. https://www.epa.gov/stationary-sources-air-pollution/clean-air-act-standards-and-guidelines-petroleum-refineries-and
25. U.S. Environmental Protection Agency, "Final Renewable Fuel Standards for 2026 and 2027" — finalized RVOs 26.81B RINs (2026), 27.02B (2027). https://www.epa.gov/renewable-fuel-standard/final-renewable-fuel-standards-2026-and-2027
26. U.S. Environmental Protection Agency, "August 2025 Decisions on Petitions for RFS Small Refinery Exemptions," 2025. https://www.epa.gov/renewable-fuel-standard/august-2025-decisions-petitions-rfs-small-refinery-exemptions
27. U.S. Energy Information Administration, "The Renewable Fuel Standard Program, RVOs, and RINs explained," Today in Energy, 2019/2025. https://www.eia.gov/todayinenergy/detail.php?id=41975
28. Oil & Gas Journal / EIA, "U.S. refinery capacity declines in 2025 amid plant closures," 2026 — Valero Benicia ~145,000 b/d ceasing 2026. https://www.ogj.com/refining-processing/refining/capacities/news/55387379/
29. Houston Public Media, "LyondellBasell's Houston-area refinery to begin closure," 2025 — Houston ~264,000 b/cd; Phillips 66 LA ~139,000 b/cd. https://www.houstonpublicmedia.org/articles/news/energy-environment/2025/01/23/511770/
30. U.S. Bureau of Labor Statistics, NAICS 324 Industry-at-a-Glance — 2025 median wage $103,160 for refinery operators/gaugers. https://www.bls.gov/iag/tgs/iag324.htm
31. Flint Hills Resources, "Who We Are" — Pine Bend refinery stated crude capacity of 375,000 bpd; Koch Industries ownership. https://www.fhr.com/who-we-are
32. Fortune, "$10 billion Citgo auction…," Sept 2025, and reporting on the November 2025 Amber Energy (Elliott) ~$5.9B winning bid. https://fortune.com/2025/09/19/citgo-auction-venezuela-elliott/