US STEEL - IRVIN WORKS
West Mifflin, PA · ALLEGHENY COUNTY · NAICS 331110
Data updated May 2026
US STEEL - IRVIN WORKS sits in the upper third of EPA GHGRP reporters by latest CO₂e (#1,215 of 8,713 nationally, #64 of 404 in PA).
- National rank #1,215 of 8,713 GHGRP facilities
- #64 of 404 in PA
- #41 of 363 in Metals
- 1.9% of US STEEL parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- -14.8% since 2011
US STEEL - IRVIN WORKS vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
362,318 1215th of 8713 higher than 7,498 of 8,713 facilities
GHGRP facilities, banded by latest reported CO₂e (MT)
Each bar is a band; taller bars hold more facilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · 2023
Facility footprint context
This site accounts for 1.9% of US STEEL reported parent CO₂e (362K MT of 19.4M MT ; #6 of 13 GHGRP facilities under that parent ). Inside the EPA Metals sector it ranks #41 of 363 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 362K MT CO₂e reported for 2023, non-CO₂ gases are 0.1% , led by N₂O at 0.1% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.9%
- 362K MT
- CH₄
- 0%
- 113 MT
- N₂O
- 0.1%
- 224 MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 362,318 |
| 2022 | 316,989 |
| 2021 | 384,878 |
| 2020 | 371,239 |
| 2019 | 564,950 |
| 2018 | 402,678 |
| 2017 | 366,050 |
| 2016 | 409,379 |
| 2015 | 342,544 |
| 2014 | 401,172 |
| 2013 | 388,094 |
| 2012 | 366,249 |
| 2011 | 425,359 |
Facility insight: US STEEL - IRVIN WORKS
US STEEL - IRVIN WORKS (GHGRP ID 1000802) is a high-volume reporter at 362K MT CO₂e in 2023 from West Mifflin, PA (#1,215 of 8,713 nationally) under Metals (NAICS 331110).
Across 2011–2023, annual CO₂e fell 14.8%; peak load was 565K MT in 2019. This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2019 at 565K MT CO2e; latest 2023 sits 35.9% below that peak (362K MT). The largest year-to-year move was 2019→2020 (-34.3%, 194K MT).
Frequently Asked Questions
Where does US STEEL - IRVIN WORKS rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, US STEEL - IRVIN WORKS ranks #1,215 of 8,713 reporting facilities by latest reported CO₂e, and #64 of 404 facilities in PA (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than US STEEL - IRVIN WORKS? ▼
US STEEL - IRVIN WORKS's 362K MT CO₂e is higher than 7,498 of the 8,713 GHGRP facilities with reported emissions (86%), an exact count from the full corpus, not an estimate.
How much CO2 does US STEEL - IRVIN WORKS emit? ▼
US STEEL - IRVIN WORKS reported 362K MT CO2e in 2023.
What share of US STEEL does US STEEL - IRVIN WORKS represent? ▼
US STEEL - IRVIN WORKS accounts for 1.9% of US STEEL's reported GHGRP CO₂e (362K MT of 19.4M MT), ranking #6 of 13 facilities under that parent.
What is US STEEL - IRVIN WORKS's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at US STEEL - IRVIN WORKS, with N₂O the larger non-CO₂ share at 0.1% (CO₂ 99.9%). Shares use the facility's GHGRP gas components for that year.
Where does US STEEL - IRVIN WORKS rank inside Metals? ▼
Among EPA GHGRP facilities tagged Metals, US STEEL - IRVIN WORKS ranks #41 of 363 by latest reported CO₂e.
Is US STEEL - IRVIN WORKS reducing emissions? ▼
Over 13 reporting years (2011–2023), US STEEL - IRVIN WORKS's emissions have decreased by 14.8%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Peer sets outside PA for a top-third GHGRP emitter: CO₂e totals first, then Metals neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside PA (362K MT here).
Similar Metals CO₂e
Nearest same-sector facility totals outside PA.