Union Power Station
EL DORADO, AR · Union · NAICS 221112
Data updated May 2026
Union Power Station sits in the upper third of EPA GHGRP reporters by latest CO₂e (#67 of 8,713 nationally, #2 of 185 in AR).
- National rank #67 of 8,713 GHGRP facilities
- #2 of 185 in AR
- #55 of 1,732 in Power Plants
- 15.5% of ENTERGY parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- +80.1% since 2011
Union Power Station vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
5,260,039 67th of 8713 higher than 8,646 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 15.5% of ENTERGY reported parent CO₂e (5.3M MT of 33.9M MT ; #1 of 24 GHGRP facilities under that parent ). Inside the EPA Power Plants sector it ranks #55 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 5.3M 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%
- 5.3M MT
- CH₄
- 0%
- 2K MT
- N₂O
- 0.1%
- 3K MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 5,260,039 |
| 2022 | 5,018,623 |
| 2021 | 4,384,938 |
| 2020 | 3,785,960 |
| 2019 | 4,299,749 |
| 2018 | 3,634,876 |
| 2017 | 3,422,048 |
| 2016 | 3,642,037 |
| 2015 | 3,497,661 |
| 2014 | 2,530,494 |
| 2013 | 2,553,287 |
| 2012 | 3,906,738 |
| 2011 | 2,920,953 |
Facility insight: Union Power Station
Union Power Station (GHGRP ID 1000800) is a high-volume reporter at 5.3M MT CO₂e in 2023 from EL DORADO, AR (#67 of 8,713 nationally) under Power Plants (NAICS 221112).
From 2011 to 2023, reported CO₂e rose 80.1% (peak 5.3M MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Frequently Asked Questions
Where does Union Power Station rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Union Power Station ranks #67 of 8,713 reporting facilities by latest reported CO₂e, and #2 of 185 facilities in AR (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than Union Power Station? ▼
Union Power Station's 5.3M MT CO₂e is higher than 8,646 of the 8,713 GHGRP facilities with reported emissions (99%), an exact count from the full corpus, not an estimate.
How much CO2 does Union Power Station emit? ▼
Union Power Station reported 5.3M MT CO2e in 2023.
What share of ENTERGY does Union Power Station represent? ▼
Union Power Station accounts for 15.5% of ENTERGY's reported GHGRP CO₂e (5.3M MT of 33.9M MT), ranking #1 of 24 facilities under that parent.
What is Union Power Station's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at Union Power Station, 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 Union Power Station rank inside Power Plants? ▼
Among EPA GHGRP facilities tagged Power Plants, Union Power Station ranks #55 of 1,732 by latest reported CO₂e.
Is Union Power Station reducing emissions? ▼
Over 13 reporting years (2011–2023), Union Power Station's emissions have increased by 80.1%. This may reflect expanded operations or increased production.
Nationwide facilities with similar CO₂e or sector
Peer sets outside AR for a top-third GHGRP emitter: CO₂e totals first, then Power Plants neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside AR (5.3M MT here).
Similar Power Plants CO₂e
Nearest same-sector facility totals outside AR.