St Charles Operations (Taft/Star) Union Carbide Corp
TAFT, LA · ST. CHARLES PARISH · NAICS 325199
Data updated May 2026
St Charles Operations (Taft/Star) Union Carbide Corp sits in the upper third of EPA GHGRP reporters by latest CO₂e (#203 of 8,713 nationally, #11 of 531 in LA).
- National rank #203 of 8,713 GHGRP facilities
- #11 of 531 in LA
- #21 of 534 in Chemicals
- 16.7% of DOW parent CO₂e
- 2023 mix: 1.7% non-CO₂ (CH₄-led)
- +41.9% since 2011
St Charles Operations (Taft/Star) Union Carbide Corp vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
2,757,259 203rd of 8713 higher than 8,510 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 16.7% of DOW reported parent CO₂e (2.8M MT of 16.5M MT ; #2 of 14 GHGRP facilities under that parent ). Inside the EPA Chemicals sector it ranks #21 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 2.8M MT CO₂e reported for 2023, non-CO₂ gases are 1.7% , led by CH₄ at 1.4% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 98.3%
- 2.7M MT
- CH₄
- 1.4%
- 38K MT
- N₂O
- 0.3%
- 8K MT
Emissions growth across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 2,757,259 |
| 2022 | 2,701,674 |
| 2021 | 2,685,456 |
| 2020 | 2,803,152 |
| 2019 | 2,970,876 |
| 2018 | 3,053,784 |
| 2017 | 2,957,077 |
| 2016 | 2,910,162 |
| 2015 | 2,868,338 |
| 2014 | 2,905,740 |
| 2013 | 2,830,069 |
| 2012 | 2,089,716 |
| 2011 | 1,943,619 |
Facility insight: St Charles Operations (Taft/Star) Union Carbide Corp
St Charles Operations (Taft/Star) Union Carbide Corp (GHGRP ID 1007031) is a high-volume reporter at 2.8M MT CO₂e in 2023 from TAFT, LA (#203 of 8,713 nationally) under Chemicals (NAICS 325199).
From 2011 to 2023, reported CO₂e rose 41.9% (peak 3.1M MT). This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2018 at 3.1M MT CO2e; latest 2023 sits 9.7% below that peak (2.8M MT). The largest year-to-year move was 2012→2013 (+35.4%, 740K MT).
Frequently Asked Questions
Where does St Charles Operations (Taft/Star) Union Carbide Corp rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, St Charles Operations (Taft/Star) Union Carbide Corp ranks #203 of 8,713 reporting facilities by latest reported CO₂e, and #11 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 St Charles Operations (Taft/Star) Union Carbide Corp? ▼
St Charles Operations (Taft/Star) Union Carbide Corp's 2.8M MT CO₂e is higher than 8,510 of the 8,713 GHGRP facilities with reported emissions (98%), an exact count from the full corpus, not an estimate.
How much CO2 does St Charles Operations (Taft/Star) Union Carbide Corp emit? ▼
St Charles Operations (Taft/Star) Union Carbide Corp reported 2.8M MT CO2e in 2023.
What share of DOW does St Charles Operations (Taft/Star) Union Carbide Corp represent? ▼
St Charles Operations (Taft/Star) Union Carbide Corp accounts for 16.7% of DOW's reported GHGRP CO₂e (2.8M MT of 16.5M MT), ranking #2 of 14 facilities under that parent.
What is St Charles Operations (Taft/Star) Union Carbide Corp's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 1.7% of reported CO₂e at St Charles Operations (Taft/Star) Union Carbide Corp, with CH₄ the larger non-CO₂ share at 1.4% (CO₂ 98.3%). Shares use the facility's GHGRP gas components for that year.
Where does St Charles Operations (Taft/Star) Union Carbide Corp rank inside Chemicals? ▼
Among EPA GHGRP facilities tagged Chemicals, St Charles Operations (Taft/Star) Union Carbide Corp ranks #21 of 534 by latest reported CO₂e.
Is St Charles Operations (Taft/Star) Union Carbide Corp reducing emissions? ▼
Over 13 reporting years (2011–2023), St Charles Operations (Taft/Star) Union Carbide Corp's emissions have increased by 41.9%. 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 (2.8M MT here).
Similar Chemicals CO₂e
Nearest same-sector facility totals outside LA.