Diamond Shamrock Refining Company, L.P.
SUNRAY, TX · MOORE COUNTY · NAICS 324110
Data updated May 2026
Diamond Shamrock Refining Company, L.P. sits in the upper third of EPA GHGRP reporters by latest CO₂e (#467 of 8,713 nationally, #71 of 1,176 in TX).
- National rank #467 of 8,713 GHGRP facilities
- #71 of 1,176 in TX
- #53 of 534 in Chemicals
- 5.8% of VALERO ENERGY parent CO₂e
- 2023 mix: 0.5% non-CO₂ (N₂O-led)
- -10.9% since 2011
Diamond Shamrock Refining Company, L.P. vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
1,366,131 467th of 8713 higher than 8,246 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 5.8% of VALERO ENERGY reported parent CO₂e (1.4M MT of 23.5M MT ; #6 of 26 GHGRP facilities under that parent ). Inside the EPA Chemicals sector it ranks #53 of 534 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 1.4M MT CO₂e reported for 2023, non-CO₂ gases are 0.5% , led by N₂O at 0.3% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.5%
- 1.4M MT
- CH₄
- 0.2%
- 3K MT
- N₂O
- 0.3%
- 4K MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 1,366,131 |
| 2022 | 1,277,156 |
| 2021 | 1,397,067 |
| 2020 | 1,325,670 |
| 2019 | 1,555,517 |
| 2018 | 1,806,697 |
| 2017 | 1,736,421 |
| 2016 | 1,919,016 |
| 2015 | 1,892,689 |
| 2014 | 1,801,765 |
| 2013 | 1,983,133 |
| 2012 | 1,867,344 |
| 2011 | 1,533,255 |
Facility insight: Diamond Shamrock Refining Company, L.P.
Diamond Shamrock Refining Company, L.P. (GHGRP ID 1007936) is a high-volume reporter at 1.4M MT CO₂e in 2023 from SUNRAY, TX (#467 of 8,713 nationally) under Chemicals (NAICS 324110).
Across 2011–2023, annual CO₂e fell 10.9%; peak load was 2.0M MT in 2013. This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2013 at 2.0M MT CO2e; latest 2023 sits 31.1% below that peak (1.4M MT). The largest year-to-year move was 2011→2012 (+21.8%, 334K MT).
Frequently Asked Questions
Where does Diamond Shamrock Refining Company, L.P. rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, Diamond Shamrock Refining Company, L.P. ranks #467 of 8,713 reporting facilities by latest reported CO₂e, and #71 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 Diamond Shamrock Refining Company, L.P.? ▼
Diamond Shamrock Refining Company, L.P.'s 1.4M MT CO₂e is higher than 8,246 of the 8,713 GHGRP facilities with reported emissions (95%), an exact count from the full corpus, not an estimate.
How much CO2 does Diamond Shamrock Refining Company, L.P. emit? ▼
Diamond Shamrock Refining Company, L.P. reported 1.4M MT CO2e in 2023.
What share of VALERO ENERGY does Diamond Shamrock Refining Company, L.P. represent? ▼
Diamond Shamrock Refining Company, L.P. accounts for 5.8% of VALERO ENERGY's reported GHGRP CO₂e (1.4M MT of 23.5M MT), ranking #6 of 26 facilities under that parent.
What is Diamond Shamrock Refining Company, L.P.'s 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.5% of reported CO₂e at Diamond Shamrock Refining Company, L.P., with N₂O the larger non-CO₂ share at 0.3% (CO₂ 99.5%). Shares use the facility's GHGRP gas components for that year.
Where does Diamond Shamrock Refining Company, L.P. rank inside Chemicals? ▼
Among EPA GHGRP facilities tagged Chemicals, Diamond Shamrock Refining Company, L.P. ranks #53 of 534 by latest reported CO₂e.
Is Diamond Shamrock Refining Company, L.P. reducing emissions? ▼
Over 13 reporting years (2011–2023), Diamond Shamrock Refining Company, L.P.'s emissions have decreased by 10.9%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Peer sets outside TX for a top-third GHGRP emitter: CO₂e totals first, then Chemicals neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside TX (1.4M MT here).
Similar Chemicals CO₂e
Nearest same-sector facility totals outside TX.