WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II)
SULPHUR, LA · CALCASIEU PARISH · NAICS 325110
Data updated May 2026
WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) sits in the upper third of EPA GHGRP reporters by latest CO₂e (#597 of 8,713 nationally, #36 of 531 in LA).
- National rank #597 of 8,713 GHGRP facilities
- #36 of 531 in LA
- #70 of 534 in Chemicals
- 23.8% of WESTLAKE CHEMICAL parent CO₂e
- 2023 mix: 2% non-CO₂ (N₂O-led)
- +2.6% since 2011
WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
1,068,186 597th of 8713 higher than 8,116 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 23.8% of WESTLAKE CHEMICAL reported parent CO₂e (1.1M MT of 4.5M MT ; #2 of 9 GHGRP facilities under that parent ). Inside the EPA Chemicals sector it ranks #70 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 1.1M MT CO₂e reported for 2023, non-CO₂ gases are 2% , led by N₂O at 1% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 98%
- 1.0M MT
- CH₄
- 1%
- 10K MT
- N₂O
- 1%
- 11K MT
High-emitter reporting timeline
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 1,068,186 |
| 2022 | 1,024,162 |
| 2021 | 919,205 |
| 2020 | 951,889 |
| 2019 | 1,034,631 |
| 2018 | 740,227 |
| 2017 | 896,666 |
| 2016 | 785,374 |
| 2015 | 901,198 |
| 2014 | 2,102,927 |
| 2013 | 1,157,973 |
| 2012 | 1,055,582 |
| 2011 | 1,040,662 |
Facility insight: WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II)
WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) (GHGRP ID 1003655) is a high-volume reporter at 1.1M MT CO₂e in 2023 from SULPHUR, LA (#597 of 8,713 nationally) under Chemicals (NAICS 325110).
Over 13 years (2011–2023), emissions stayed within a narrow band around 1.1M MT CO₂e (peak 2.1M MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2014 at 2.1M MT CO2e; latest 2023 sits 49.2% below that peak (1.1M MT). The largest year-to-year move was 2014→2015 (-57.1%, 1.2M MT).
Frequently Asked Questions
Where does WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) ranks #597 of 8,713 reporting facilities by latest reported CO₂e, and #36 of 531 facilities in LA (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II)? ▼
WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II)'s 1.1M MT CO₂e is higher than 8,116 of the 8,713 GHGRP facilities with reported emissions (93%), an exact count from the full corpus, not an estimate.
How much CO2 does WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) emit? ▼
WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) reported 1.1M MT CO2e in 2023.
What share of WESTLAKE CHEMICAL does WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) represent? ▼
WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) accounts for 23.8% of WESTLAKE CHEMICAL's reported GHGRP CO₂e (1.1M MT of 4.5M MT), ranking #2 of 9 facilities under that parent.
What is WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II)'s 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 2% of reported CO₂e at WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II), with N₂O the larger non-CO₂ share at 1% (CO₂ 98%). Shares use the facility's GHGRP gas components for that year.
Where does WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) rank inside Chemicals? ▼
Among EPA GHGRP facilities tagged Chemicals, WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) ranks #70 of 534 by latest reported CO₂e.
Is WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II) reducing emissions? ▼
Over 13 reporting years (2011–2023), WESTLAKE PETROCHEMICALS LP - ETHYLENE MANUFACTURING COMPLEX (PETRO I/PETRO II)'s emissions have increased by 2.6%. Emissions have remained relatively stable.
Nationwide facilities with similar CO₂e or sector
Peer sets outside LA for a top-third GHGRP emitter: CO₂e totals first, then Chemicals neighbors.
Similar reported CO₂e
Nearest latest-year facility totals outside LA (1.1M MT here).
Similar Chemicals CO₂e
Nearest same-sector facility totals outside LA.