Southwestern
Anadarko, OK · Caddo · NAICS 221112
Data updated May 2026
Southwestern sits in the upper third of EPA GHGRP reporters by latest CO₂e (#825 of 8,713 nationally, #20 of 247 in OK).
- National rank #825 of 8,713 GHGRP facilities
- #20 of 247 in OK
- #550 of 1,732 in Power Plants
- 1.6% of AMERICAN ELECTRIC POWER CO parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- +16.2% since 2011
Southwestern vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
711,730 825th of 8713 higher than 7,888 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 1.6% of AMERICAN ELECTRIC POWER CO reported parent CO₂e (712K MT of 44.7M MT ; #12 of 22 GHGRP facilities under that parent ). Inside the EPA Power Plants sector it ranks #550 of 1,732 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 712K 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%
- 711K MT
- CH₄
- 0%
- 330 MT
- N₂O
- 0.1%
- 393 MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 711,730 |
| 2022 | 553,078 |
| 2021 | 454,089 |
| 2020 | 324,204 |
| 2019 | 449,613 |
| 2018 | 420,186 |
| 2017 | 203,416 |
| 2016 | 330,597 |
| 2015 | 247,687 |
| 2014 | 269,281 |
| 2013 | 341,353 |
| 2012 | 583,552 |
| 2011 | 612,428 |
Facility insight: Southwestern
Southwestern (GHGRP ID 1000863) is a high-volume reporter at 712K MT CO₂e in 2023 from Anadarko, OK (#825 of 8,713 nationally) under Power Plants (NAICS 221112).
From 2011 to 2023, reported CO₂e rose 16.2% (peak 712K MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Frequently Asked Questions
Where does Southwestern rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Southwestern ranks #825 of 8,713 reporting facilities by latest reported CO₂e, and #20 of 247 facilities in OK (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than Southwestern? ▼
Southwestern's 712K MT CO₂e is higher than 7,888 of the 8,713 GHGRP facilities with reported emissions (91%), an exact count from the full corpus, not an estimate.
How much CO2 does Southwestern emit? ▼
Southwestern reported 712K MT CO2e in 2023.
What share of AMERICAN ELECTRIC POWER CO does Southwestern represent? ▼
Southwestern accounts for 1.6% of AMERICAN ELECTRIC POWER CO's reported GHGRP CO₂e (712K MT of 44.7M MT), ranking #12 of 22 facilities under that parent.
What is Southwestern's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at Southwestern, 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 Southwestern rank inside Power Plants? ▼
Among EPA GHGRP facilities tagged Power Plants, Southwestern ranks #550 of 1,732 by latest reported CO₂e.
Is Southwestern reducing emissions? ▼
Over 13 reporting years (2011–2023), Southwestern's emissions have increased by 16.2%. This may reflect expanded operations or increased production.
Nationwide facilities with similar CO₂e or sector
Peer sets outside OK for a top-third GHGRP emitter: CO₂e totals first, then Power Plants neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside OK (712K MT here).
Similar Power Plants CO₂e
Nearest same-sector facility totals outside OK.