Hays Energy Facility
SAN MARCOS, TX · Hays · NAICS 221112
Data updated May 2026
Hays Energy Facility sits in the upper third of EPA GHGRP reporters by latest CO₂e (#333 of 8,713 nationally, #55 of 1,176 in TX).
- National rank #333 of 8,713 GHGRP facilities
- #55 of 1,176 in TX
- #255 of 1,732 in Power Plants
- 2.2% of Vistra parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- +56.7% since 2011
Hays Energy Facility vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
1,911,278 333rd of 8713 higher than 8,380 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 2.2% of Vistra reported parent CO₂e (1.9M MT of 86.3M MT ; #18 of 40 GHGRP facilities under that parent ). Inside the EPA Power Plants sector it ranks #255 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 1.9M 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%
- 1.9M MT
- CH₄
- 0%
- 886 MT
- N₂O
- 0.1%
- 1K MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 1,911,278 |
| 2022 | 1,428,707 |
| 2021 | 1,152,058 |
| 2020 | 987,099 |
| 2019 | 1,296,177 |
| 2018 | 1,252,863 |
| 2017 | 1,146,097 |
| 2016 | 1,609,686 |
| 2015 | 1,818,805 |
| 2014 | 967,539 |
| 2013 | 1,085,521 |
| 2012 | 764,591 |
| 2011 | 1,219,409 |
Facility insight: Hays Energy Facility
Hays Energy Facility (GHGRP ID 1001335) is a high-volume reporter at 1.9M MT CO₂e in 2023 from SAN MARCOS, TX (#333 of 8,713 nationally) under Power Plants (NAICS 221112).
From 2011 to 2023, reported CO₂e rose 56.7% (peak 1.9M MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Frequently Asked Questions
Where does Hays Energy Facility rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Hays Energy Facility ranks #333 of 8,713 reporting facilities by latest reported CO₂e, and #55 of 1,176 facilities in TX (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than Hays Energy Facility? ▼
Hays Energy Facility's 1.9M MT CO₂e is higher than 8,380 of the 8,713 GHGRP facilities with reported emissions (96%), an exact count from the full corpus, not an estimate.
How much CO2 does Hays Energy Facility emit? ▼
Hays Energy Facility reported 1.9M MT CO2e in 2023.
What share of Vistra does Hays Energy Facility represent? ▼
Hays Energy Facility accounts for 2.2% of Vistra's reported GHGRP CO₂e (1.9M MT of 86.3M MT), ranking #18 of 40 facilities under that parent.
What is Hays Energy Facility's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at Hays Energy Facility, 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 Hays Energy Facility rank inside Power Plants? ▼
Among EPA GHGRP facilities tagged Power Plants, Hays Energy Facility ranks #255 of 1,732 by latest reported CO₂e.
Is Hays Energy Facility reducing emissions? ▼
Over 13 reporting years (2011–2023), Hays Energy Facility's emissions have increased by 56.7%. This may reflect expanded operations or increased production.
Nationwide facilities with similar CO₂e or sector
Peer sets outside TX for a top-third GHGRP emitter: CO₂e totals first, then Power Plants neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside TX (1.9M MT here).
Similar Power Plants CO₂e
Nearest same-sector facility totals outside TX.