EPA TRI Facility · Electric Utilities
National Grid Port Jefferson Power Station
Port Jefferson, NY · Parent: National Grid USA
- Total releases
- 126.5K lbs
- Chemicals reported
- 5
- Carcinogens
- 3
- Primary pathway
- Air Releases
AIR Form-R mix
National Grid Port Jefferson Power Station: how the 148.0K lbs splits
148.0K lbs across all reported pathways
- Air Releases 147.7K lbs 99.8%
- Off-site Transfers 322 lbs 0.2%
National Grid Port Jefferson Power Station's 148.0K lbs Form-R total is AIR - air releases is 99.8% of the bar. Next segment: off-site transfers at 0.2%. 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
National Grid Port Jefferson Power Station is an EPA Toxics Release Inventory reporter in Port Jefferson, NY, in the electric utilities sector. It reported 21.5K lbs of releases across 3 chemicals in 2024, and 126.5K lbs in total across its 2019-2024 reporting years. That ranks 4,083 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In New York's 581 reporting TRI sites, pounds #1 is not chemical-count #1. National Grid Port Jefferson Power Station is pounds #80 and chemical-count #112 at 126.5K lbs. St Lawrence Zinc Co Balmat 4 Mine & Mill leads reported pounds (9.7M lbs) at 10 chemicals (chemical-count #40). Norlite LLC leads chemical count at 93 chemicals (28.3K lbs, pounds #152). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Basf Corp; Northville Industries Corp. - Setauket Terminal; Oldcastle Precast Inc; Richard M Flynn Power Plant. Similar-scale Electric Utilities peers outside New York: Lake Road Station; Johnson County Generation Facility; Middletown Power LLC; Chambers Cogeneration L.P.. Other National Grid USA sites in this extract: National Grid Northport Power Station; National Grid E.f. Barrett Power Station; National Grid Wading River Ic Facility. Largest disclosed chemicals by pounds: Ammonia; Lead; Polycyclic aromatic compounds; Naphthalene.
Compare National Grid Port Jefferson Power Station with
Nearest reporters in New York
- Basf Corp East Setauket · 2.2K lbs
- Northville Industries Corp. - Setauket Terminal East Setauket · 10.2K lbs
- Oldcastle Precast Inc Middle Island · 234 lbs
- Richard M Flynn Power Plant Holtsville · 301 lbs
Similar-scale Electric Utilities sites elsewhere: Lake Road Station (MO) · Johnson County Generation Facility (TX) · Middletown Power LLC (CT)
National Grid Port Jefferson Power Station stamps MID volume with a dominant AIR pathway (99.8% air releases) across 5 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 126.5K 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 Johnson County Generation Facility.
National Grid Port Jefferson Power Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
127K lbs Top 16% higher than 84% 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
National Grid Port Jefferson Power Station: Ammonia-led volume
Among the 513 Electric Utilities facilities in this database, National Grid Port Jefferson Power Station reports the 309th-largest volume (126.5K lbs). Its reported volume is concentrated rather than spread: Ammonia alone is 99.8% of the total. Scale peers outside New York include Lake Road Station and Johnson County Generation Facility.
Concentrated means ≥60% of National Grid Port Jefferson Power Station's pounds in one chemical - here Ammonia at 99.8%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- National Grid Port Jefferson Power Station's total reported releases fell from 28.9 thousand lb in 2022 to 22.4 thousand lb in 2023, based on EPA TRI filings.
- National Grid Port Jefferson Power Station's off-site transfers rose from 0 lb in 2022 to 322 lb in 2023, based on EPA TRI filings.
- National Grid Port Jefferson Power Station's air releases fell from 28.9 thousand lb in 2022 to 22.1 thousand lb in 2023, based on EPA TRI filings.
National Grid Port Jefferson Power Station Form-R facts
Compare this facility
See how National Grid Port Jefferson Power Station stacks up against nearby facilities and the typical reporter.
58.7× more than the comparison
5.0× 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 National Grid Port Jefferson Power Station releases toxic chemicals into the environment. Total: 148.0K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases increased by 36% (15.8K lbs to 21.5K lbs).
National Grid Port Jefferson Power Station: 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 National Grid Port Jefferson Power Station year-over-year reported totals (increased by 36% 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 | 15.8K lbs | 3 |
| 2020 | 28.2K lbs | 3 |
| 2021 | 31.2K lbs | 3 |
| 2022 | 28.9K lbs | 4 |
| 2023 | 22.4K lbs | 4 |
| 2024 | 21.5K lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 3 of 5 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ammonia | 147.7K lbs | - |
| Lead | 323 lbs | Carcinogen |
| Polycyclic aromatic compounds | 20 lbs | Carcinogen |
| Naphthalene | 4 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
National Grid Port Jefferson Power Station · AIR-pathway site
Nearest TRI Facilities to National Grid Port Jefferson Power Station
Closest other reporters in New York - including Basf Corp, Northville Industries Corp. - Setauket Terminal, Oldcastle Precast Inc, ordered by distance.
Showing 8 of 580 other reporting facilities in New York.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside New York - e.g. Lake Road Station, Johnson County Generation Facility, Middletown Power LLC.
Compare beyond New York
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest National Grid Port Jefferson Power Station on cumulative reported pounds (126.5K lbs) and distinct chemical count (5). Release-pound peers include Ge Aerospace Auburn, Protomet Corp, Victaulic Co - Lawrenceville Facility. Chemical-count peers include Abbvie Ltd, Lilly del Caribe Inc Carolin A, Baxter Healthcare of Puerto Rico 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.
- Ge Aerospace Auburn Auburn, AL · Transportation Equipment 126.5K lbs reported
- Protomet Corp Loudon, TN · Fabricated Metals 126.6K lbs reported
- Victaulic Co - Lawrenceville Facility Tioga, PA · Primary Metals 126.5K lbs reported
- Aldrich Chemical Co LLC Teutonia Milwaukee, WI · Chemicals 126.7K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other National Grid USA Facilities
Same-parent TRI sites ranked by reported releases - including National Grid Northport Power Station, National Grid E.f. Barrett Power Station, National Grid Wading River Ic Facility.
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, Lead, Polycyclic aromatic compounds, Naphthalene; nearby reporters include Basf Corp. National Grid Port Jefferson Power Station 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 National Grid Port Jefferson Power Station TRI extract (MID · AIR · TRACE-CARC · lead Ammonia) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
National Grid Port Jefferson Power Station totals are self-reported EPCRA §313 estimates for Port Jefferson, NY, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 221112 · Electric Utilities. 7.5% of Suffolk TRI pounds in this extract. Nearest ABS peer: Ge Aerospace Auburn (Δ 25 lbs). Pounds ≠ exposure.
National Grid Port Jefferson Power Station 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