EPA TRI Facility · Electric Utilities
Middletown Power LLC
Middletown, CT · Parent: Arclight Energy Partners Fund VII LP
- Total releases
- 130.3K lbs
- Chemicals reported
- 4
- Carcinogens
- 2
- Primary pathway
- Air Releases
AIR Form-R mix
Middletown Power LLC: how the 138.2K lbs splits
138.2K lbs across all reported pathways
- Air Releases 136.8K lbs 99.0%
- Water Discharges 1.3K lbs 1.0%
- Off-site Transfers 15 lbs <0.1%
- Land Disposal 0 lbs <0.1%
Middletown Power LLC's 138.2K lbs Form-R total is AIR - air releases is 99.0% of the bar. Next segment: water discharges at 1.0%. Leading chemical by pounds: Ammonia.
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.
MID volume AIR pathway TRACE-CARC
Middletown Power LLC is an EPA Toxics Release Inventory reporter in Middletown, CT, in the electric utilities sector. It reported 7.9K lbs of releases across 3 chemicals in 2024, and 130.3K lbs in total across its 2019-2024 reporting years. That ranks 4,025 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Connecticut's 240 reporting TRI sites, pounds #1 is not chemical-count #1. Middletown Power LLC is pounds #20 and chemical-count #52 at 130.3K lbs. Clean Harbors of Connecticut Inc leads reported pounds (1.5M lbs) at 15 chemicals (chemical-count #2). Allnex USA Inc. Wallingford Ct Site leads chemical count at 19 chemicals (436.7K lbs, pounds #3). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Kleen Energy Systems LLC; Pratt & Whitney; Bourdon Forge Co Inc; Habasit America Inc.. Similar-scale Electric Utilities peers outside Connecticut: Lake Road Station; Caithness Long Island Energy Center; National Grid Port Jefferson Power Station; Brooklyn Navy Yard Cogeneration Facility. Other Arclight Energy Partners Fund VII LP sites in this extract: Kearny Generating Station; Bridgeport Harbor Station Unit 5; Montville Power LLC; Oswego Harbor Power. Largest disclosed chemicals by pounds: Ammonia; Polycyclic aromatic compounds; Naphthalene; Benzo[g,h,i]perylene.
Middletown Power LLC stamps MID volume with a dominant AIR pathway (99.0% air releases) across 4 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 130.3K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Lake Road Station and Caithness Long Island Energy Center.
Middletown Power LLC vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
130K lbs Top 15% higher than 85% 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
Middletown Power LLC inside Middlesex's TRI pounds
Among the 513 Electric Utilities facilities in this database, Middletown Power LLC reports the 307th-largest volume (130.3K lbs). This one site accounts for 39.7% of every pound reported in Middlesex. Its reported volume is concentrated rather than spread: Ammonia alone is more than 99.9% of the total. Scale peers outside Connecticut include Lake Road Station and Caithness Long Island Energy Center.
County-dominant here means ≥25% of Middlesex's reported pounds (328.3K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Middletown Power LLC's total reported releases fell from 28.0 thousand lb in 2022 to 26.1 thousand lb in 2023, based on EPA TRI filings.
- Middletown Power LLC's water releases fell from 309 lb in 2022 to 125 lb in 2023, based on EPA TRI filings.
- Middletown Power LLC's chemicals reported fell from 4 in 2022 to 3 in 2023, based on EPA TRI filings.
- Middletown Power LLC's air releases fell from 27.7 thousand lb in 2022 to 26.0 thousand lb in 2023, based on EPA TRI filings.
Middletown Power LLC Form-R facts
Compare this facility
See how Middletown Power LLC stacks up against nearby facilities and the typical reporter.
2.6× more than the comparison
4.0× 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 Middletown Power LLC releases toxic chemicals into the environment. Total: 138.2K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases decreased by 75% (31.4K lbs to 7.9K lbs).
Middletown Power LLC: annual Form-R pounds
MID site · AIR pathway · TRI years 2019–2024
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
- 2024 0
What this shows Middletown Power LLC year-over-year reported totals (decreased by 75% from 2019 to 2024). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Ammonia.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 31.4K lbs | 3 |
| 2020 | 28.9K lbs | 3 |
| 2021 | 15.9K lbs | 4 |
| 2022 | 28.0K lbs | 4 |
| 2023 | 26.1K lbs | 3 |
| 2024 | 7.9K lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 2 of 4 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ammonia | 138.1K lbs | - |
| Polycyclic aromatic compounds | 50 lbs | Carcinogen |
| Naphthalene | 15 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
Middletown Power LLC · AIR-pathway site
Nearest TRI Facilities to Middletown Power LLC
Closest other reporters in Connecticut - including Kleen Energy Systems LLC, Pratt & Whitney, Bourdon Forge Co Inc, ordered by distance.
Showing 8 of 239 other reporting facilities in Connecticut.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Connecticut - e.g. Lake Road Station, Caithness Long Island Energy Center, National Grid Port Jefferson Power Station.
Compare beyond Connecticut
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Middletown Power LLC on cumulative reported pounds (130.3K lbs) and distinct chemical count (4). Release-pound peers include Power Pipe & Tank LLC, St. Marks Powder Inc., Plasman. Chemical-count peers include Hamilton Sundstrand de Puerto Rico Inc., Abb Installation Products Caribe LLC, Solenis LLC. 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).
- Hamilton Sundstrand de Puerto Rico Inc. Santa Isabel, PR · Transportation Equipment 4 chemicals
- Abb Installation Products Caribe LLC Vega Baja, PR · Electrical Equipment 4 chemicals
- Solenis LLC Chicopee, MA · Chemicals 4 chemicals
- Adhesive Applications Inc. - O'Neill St Easthampton Easthampton, MA · Miscellaneous Manufacturing 4 chemicals
Other Arclight Energy Partners Fund VII LP Facilities
Same-parent TRI sites ranked by reported releases - including Kearny Generating Station, Bridgeport Harbor Station Unit 5, Montville Power LLC.
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 Ammonia, Polycyclic aromatic compounds, Naphthalene, Benzo[g,h,i]perylene; nearby reporters include Kleen Energy Systems LLC. Middletown Power LLC stamps MID volume · AIR pathway · TRACE-CARC 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 Middletown Power LLC TRI extract (MID · AIR · TRACE-CARC · lead Ammonia) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Middletown Power LLC totals are self-reported EPCRA §313 estimates for Middletown, CT, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 221112 · Electric Utilities. 39.7% of Middlesex TRI pounds in this extract. Nearest ABS peer: Power Pipe & Tank LLC (Δ 5 lbs). Pounds ≠ exposure.
Middletown Power LLC stamps MID volume · AIR pathway · TRACE-CARC · lead Ammonia. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
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