Hardin Generating Station
HARDIN, MT · Big Horn · NAICS 221112
Data updated May 2026
Hardin Generating Station sits in the upper third of EPA GHGRP reporters by latest CO₂e (#856 of 8,713 nationally, #6 of 43 in MT).
- National rank #856 of 8,713 GHGRP facilities
- #6 of 43 in MT
- #567 of 1,732 in Power Plants
- 80.5% of HEOROT POWER HOLDINGS parent CO₂e
- 2023 mix: 0.8% non-CO₂ (N₂O-led)
- -14.2% since 2011
Hardin Generating Station vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
663,072 856th of 8713 higher than 7,857 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 80.5% of HEOROT POWER HOLDINGS reported parent CO₂e (663K MT of 824K MT ; #1 of 3 GHGRP facilities under that parent ). Inside the EPA Power Plants sector it ranks #567 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 663K MT CO₂e reported for 2023, non-CO₂ gases are 0.8% , led by N₂O at 0.5% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.2%
- 658K MT
- CH₄
- 0.3%
- 2K MT
- N₂O
- 0.5%
- 3K MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 663,072 |
| 2022 | 730,172 |
| 2021 | 692,184 |
| 2020 | 73,621 |
| 2019 | 212,250 |
| 2018 | 208,493 |
| 2017 | 155,954 |
| 2016 | 442,903 |
| 2015 | 615,245 |
| 2014 | 851,868 |
| 2013 | 772,575 |
| 2012 | 587,387 |
| 2011 | 773,095 |
Facility insight: Hardin Generating Station
Hardin Generating Station (GHGRP ID 1000157) is a high-volume reporter at 663K MT CO₂e in 2023 from HARDIN, MT (#856 of 8,713 nationally) under Power Plants (NAICS 221112).
Across 2011–2023, annual CO₂e fell 14.2%; peak load was 852K MT in 2014. This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2014 at 852K MT CO2e; latest 2023 sits 22.2% below that peak (663K MT). The largest year-to-year move was 2020→2021 (+840.2%, 619K MT).
Frequently Asked Questions
Where does Hardin Generating Station rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Hardin Generating Station ranks #856 of 8,713 reporting facilities by latest reported CO₂e, and #6 of 43 facilities in MT (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than Hardin Generating Station? ▼
Hardin Generating Station's 663K MT CO₂e is higher than 7,857 of the 8,713 GHGRP facilities with reported emissions (90%), an exact count from the full corpus, not an estimate.
How much CO2 does Hardin Generating Station emit? ▼
Hardin Generating Station reported 663K MT CO2e in 2023.
What share of HEOROT POWER HOLDINGS does Hardin Generating Station represent? ▼
Hardin Generating Station accounts for 80.5% of HEOROT POWER HOLDINGS's reported GHGRP CO₂e (663K MT of 824K MT), ranking #1 of 3 facilities under that parent.
What is Hardin Generating Station's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.8% of reported CO₂e at Hardin Generating Station, with N₂O the larger non-CO₂ share at 0.5% (CO₂ 99.2%). Shares use the facility's GHGRP gas components for that year.
Where does Hardin Generating Station rank inside Power Plants? ▼
Among EPA GHGRP facilities tagged Power Plants, Hardin Generating Station ranks #567 of 1,732 by latest reported CO₂e.
Is Hardin Generating Station reducing emissions? ▼
Over 13 reporting years (2011–2023), Hardin Generating Station's emissions have decreased by 14.2%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Peer sets outside MT for a top-third GHGRP emitter: CO₂e totals first, then Power Plants neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside MT (663K MT here).
Similar Power Plants CO₂e
Nearest same-sector facility totals outside MT.