WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY
SULPHUR, LA · CALCASIEU PARISH · NAICS 325110
Data updated May 2026
WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY sits in the upper third of EPA GHGRP reporters by latest CO₂e (#1,871 of 8,713 nationally, #117 of 531 in LA).
- National rank #1,871 of 8,713 GHGRP facilities
- #117 of 531 in LA
- #214 of 534 in Chemicals
- 3.7% of WESTLAKE CHEMICAL parent CO₂e
- 2023 mix: 0.1% non-CO₂ (N₂O-led)
- +21.6% since 2011
WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
166,187 1871st of 8713 higher than 6,842 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 3.7% of WESTLAKE CHEMICAL reported parent CO₂e (166K MT of 4.5M MT ; #7 of 9 GHGRP facilities under that parent ). Inside the EPA Chemicals sector it ranks #214 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 166K 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%
- 166K MT
- CH₄
- 0%
- 78 MT
- N₂O
- 0.1%
- 93 MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 166,187 |
| 2022 | 161,184 |
| 2021 | 161,715 |
| 2020 | 137,658 |
| 2019 | 154,832 |
| 2018 | 145,005 |
| 2017 | 153,073 |
| 2016 | 148,304 |
| 2015 | 153,471 |
| 2014 | 126,212 |
| 2013 | 146,385 |
| 2012 | 108,784 |
| 2011 | 136,669 |
Facility insight: WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY
WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY (GHGRP ID 1005564) is a high-volume reporter at 166K MT CO₂e in 2023 from SULPHUR, LA (#1,871 of 8,713 nationally) under Chemicals (NAICS 325110).
From 2011 to 2023, reported CO₂e rose 21.6% (peak 166K MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Frequently Asked Questions
Where does WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY ranks #1,871 of 8,713 reporting facilities by latest reported CO₂e, and #117 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 STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY? ▼
WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY's 166K MT CO₂e is higher than 6,842 of the 8,713 GHGRP facilities with reported emissions (79%), an exact count from the full corpus, not an estimate.
How much CO2 does WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY emit? ▼
WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY reported 166K MT CO2e in 2023.
What share of WESTLAKE CHEMICAL does WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY represent? ▼
WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY accounts for 3.7% of WESTLAKE CHEMICAL's reported GHGRP CO₂e (166K MT of 4.5M MT), ranking #7 of 9 facilities under that parent.
What is WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.1% of reported CO₂e at WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION 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 WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY rank inside Chemicals? ▼
Among EPA GHGRP facilities tagged Chemicals, WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY ranks #214 of 534 by latest reported CO₂e.
Is WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY reducing emissions? ▼
Over 13 reporting years (2011–2023), WESTLAKE STYRENE LLC - STYRENE MONOMER PRODUCTION FACILITY's emissions have increased by 21.6%. This may reflect expanded operations or increased production.
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 (166K MT here).
Similar Chemicals CO₂e
Nearest same-sector facility totals outside LA.