EPA TRI Facility · Electric Utilities
W.a. Parish Electric Generating Station
Thompsons, TX · Parent: Nrg Energy Inc
- Total releases
- 9.4M lbs
- Chemicals reported
- 19
- Carcinogens
- 5
- Primary pathway
- Land Disposal
Reported-total composition
How the reported total is distributed
9.4M lbs across all reported pathways
- Land Disposal 5.9M lbs 63.2%
- Air Releases 3.4M lbs 36.7%
- Water Discharges 9.3K lbs 0.1%
The segments reconcile to the cumulative total shown above. Off-site transfers are shown separately from releases to air, water, and land.
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
HEAVY volume MIXED pathway CARC-LEAN
W.a. Parish Electric Generating Station is an EPA Toxics Release Inventory reporter in Thompsons, TX, in the electric utilities sector. It reported 1.8M lbs of releases across 16 chemicals in 2023, and 9.4M lbs in total across its 2019-2023 reporting years. That ranks 231 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Texas's 2,016 reporting TRI sites, pounds #1 is not chemical-count #1. W.a. Parish Electric Generating Station is pounds #21 and chemical-count #99 at 9.4M lbs. Ascend Performance Materials-Chocolate Bayou Plant leads reported pounds (94.0M lbs) at 36 chemicals (chemical-count #35). Veolia Es Technical Solutions LLC Port Arthur Facility leads chemical count at 246 chemicals (1.5M lbs, pounds #112). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Richmond Plant; Championx-Sugar Land; Allied Plant 1 - Rosenberg; Heidelberg Materials - Arcola Rmc. Similar-scale Electric Utilities peers outside Texas: Pleasants Power Station; Conemaugh Generating Station; Jeffrey Energy Center; Public Service Co of Colorado Comanche Station. Other Nrg Energy Inc sites in this extract: Limestone Electric Generating Station; Homer City Generation LP; Waukegan Generating Station; Powerton Generating Station. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Hydrogen fluoride; Ammonia; Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size).
W.a. Parish Electric Generating Station has reported 9.4M lbs of toxic releases across 19 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2023. Of the chemicals reported, 5 are classified as carcinogens, representing 26% of the facility's chemical profile. The facility operates in the Electric Utilities sector. The primary release pathway is land disposal, accounting for 63% of total releases. All release data shown below is self-reported to the EPA under the Emergency Planning and Community Right-to-Know Act (EPCRA) Section 313.
W.a. Parish Electric Generating Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
9.4M lbs Top 1% higher than 99% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Where this facility sits in the TRI record
Among the 513 Electric Utilities facilities in this database, W.a. Parish Electric Generating Station reports the 31st-largest volume, placing it in the top 6% of its sector. This one site accounts for 65.5% of every pound reported in Fort Bend.
Placement is computed from reported TRI pounds in this database. Thresholds are fixed across every facility page: concentrated ≥60% of volume in one chemical, county-dominant ≥25% of the county total, carcinogen-heavy ≥50% of pounds. Share-based statements are shown only for sites reporting at least 1,000 lbs, because a share of a very small total is not a meaningful signal. Reported pounds are self-reported estimates and do not measure toxicity or health risk.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- W.a. Parish Electric Generating Station's total reported releases fell from 1.9 million lb in 2022 to 1.8 million lb in 2023, based on EPA TRI filings.
- W.a. Parish Electric Generating Station's air releases rose from 719.8 thousand lb in 2022 to 880.0 thousand lb in 2023, based on EPA TRI filings.
- W.a. Parish Electric Generating Station's land releases fell from 1.1 million lb in 2022 to 966.8 thousand lb in 2023, based on EPA TRI filings.
- W.a. Parish Electric Generating Station's water releases fell from 1.6 thousand lb in 2022 to 1.5 thousand lb in 2023, based on EPA TRI filings.
Quick Facts
Compare this facility
See how W.a. Parish Electric Generating Station stacks up against nearby facilities and the typical reporter.
14495934.0× more than the comparison
19.0× more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How W.a. Parish Electric Generating Station releases toxic chemicals into the environment. Total: 9.4M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 4% (1.9M lbs to 1.8M lbs).
Reported total releases by year
W.a. Parish Electric Generating Station - annual TRI totals
- 2019
- 2020
- 2021
- 2022
- 2023
What this shows Year-over-year reported totals. TRI figures are self-reported estimates and can swing with production levels, waste-rock handling and reporting changes, not only with emissions controls.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 1.9M lbs | 17 |
| 2020 | 1.4M lbs | 15 |
| 2021 | 2.4M lbs | 18 |
| 2022 | 1.9M lbs | 16 |
| 2023 | 1.8M lbs | 16 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 5 of 19 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 4.7M lbs | - |
| Hydrogen fluoride | 1.7M lbs | - |
| Ammonia | 989.1K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 559.1K lbs | - |
| Manganese compounds | 495.4K lbs | - |
| Vanadium compounds | 211.5K lbs | - |
| Copper compounds | 166.5K lbs | - |
| Zinc compounds | 159.2K lbs | - |
| n-Hexane | 99.2K lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 88.5K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 79.9K lbs | - |
| Nickel compounds | 65.9K lbs | Carcinogen |
| Lead compounds | 48.7K lbs | - |
| Arsenic compounds | 30.5K lbs | Carcinogen |
| Cobalt compounds | 12.2K lbs | Carcinogen |
| Mercury And Mercury Compounds | 919 lbs | - |
| Mercury compounds | 658 lbs | - |
| Hexachlorobenzene | 21 lbs | Carcinogen |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Location
Nearest TRI Facilities to W.a. Parish Electric Generating Station
Closest other reporters in Texas - including Richmond Plant, Championx-Sugar Land, Allied Plant 1 - Rosenberg, ordered by distance.
Showing 8 of 2,015 other reporting facilities in Texas.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Texas - e.g. Pleasants Power Station, Conemaugh Generating Station, Jeffrey Energy Center.
Compare beyond Texas
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest W.a. Parish Electric Generating Station on cumulative reported pounds (9.4M lbs) and distinct chemical count (19). Release-pound peers include Clearwater Paper - Augusta Mill, McCain Foods USA Inc, Chevron Products Co. Div of Chevron USA Inc.. Chemical-count peers include Allnex USA Inc. Wallingford Ct Site, Johnson Matthey, Colver Green Energy. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Nrg Energy Inc Facilities
Same-parent TRI sites ranked by reported releases - including Limestone Electric Generating Station, Homer City Generation LP, Waukegan Generating Station.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Hydrogen fluoride, Ammonia, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); nearby reporters include Richmond Plant. W.a. Parish Electric Generating Station stamps HEAVY volume · MIXED pathway · CARC-LEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This W.a. Parish Electric Generating Station record combines EPA TRI filings, facility identity, and compliance context without turning reported releases into a health-risk rating.
TRI release totals are self-reported estimates, not measured stack emissions. The methodology explains how records are joined, computed, and refreshed.
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov