EPA TRI Facility · Electric Utilities
National Grid Northport Power Station
Northport, NY · Parent: National Grid USA
- Total releases
- 587.1K lbs
- Chemicals reported
- 6
- Carcinogens
- 3
- Primary pathway
- Air Releases
AIR Form-R mix
National Grid Northport Power Station: how the 726.8K lbs splits
726.8K lbs across all reported pathways
- Air Releases 726.2K lbs 99.9%
- Off-site Transfers 587 lbs 0.1%
National Grid Northport Power Station's 726.8K lbs Form-R total is AIR - air releases is 99.9% of the bar. Next segment: off-site transfers at 0.1%. 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 Northport Power Station is an EPA Toxics Release Inventory reporter in Northport, NY, in the electric utilities sector. It reported 139.7K lbs of releases across 4 chemicals in 2024, and 587.1K lbs in total across its 2019-2024 reporting years. That ranks 1,760 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 Northport Power Station is pounds #30 and chemical-count #89 at 587.1K 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: American Technical Ceramics; Long Island Sterilization; Parker Hannifin Corp Fluid Systems Div; Spellman High Voltage Electronics. Similar-scale Electric Utilities peers outside New York: Transalta Centralia Generation / Mining; Cholla Power Plant; Rm Miller Power; Coffeen Power Station. Other National Grid USA sites in this extract: National Grid E.f. Barrett Power Station; National Grid Port Jefferson Power Station; National Grid Wading River Ic Facility. Largest disclosed chemicals by pounds: Ammonia; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Lead; Polycyclic aromatic compounds.
National Grid Northport Power Station stamps MID volume with a dominant AIR pathway (99.9% air releases) across 6 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 587.1K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Transalta Centralia Generation / Mining and Cholla Power Plant.
National Grid Northport Power Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
587K lbs Top 7% higher than 93% 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 Northport Power Station inside Suffolk's TRI pounds
Among the 513 Electric Utilities facilities in this database, National Grid Northport Power Station reports the 226th-largest volume (587.1K lbs). This one site accounts for 35.0% of every pound reported in Suffolk. Its reported volume is concentrated rather than spread: Ammonia alone is 91.2% of the total. Scale peers outside New York include Transalta Centralia Generation / Mining and Cholla Power Plant.
County-dominant here means ≥25% of Suffolk's reported pounds (1.7M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- National Grid Northport Power Station's total reported releases fell from 141.0 thousand lb in 2022 to 87.9 thousand lb in 2023, based on EPA TRI filings.
- National Grid Northport Power Station's off-site transfers rose from 165 lb in 2022 to 422 lb in 2023, based on EPA TRI filings.
- National Grid Northport Power Station's air releases fell from 140.8 thousand lb in 2022 to 87.5 thousand lb in 2023, based on EPA TRI filings.
- National Grid Northport Power Station's chemicals reported fell from 6 in 2022 to 4 in 2023, based on EPA TRI filings.
National Grid Northport Power Station Form-R facts
Compare this facility
See how National Grid Northport Power Station stacks up against nearby facilities and the typical reporter.
366956184.1× more than the comparison
6.0× 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 Northport Power Station releases toxic chemicals into the environment. Total: 726.8K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases increased by 80% (77.6K lbs to 139.7K lbs).
National Grid Northport 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 Northport Power Station year-over-year reported totals (increased by 80% 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 | 77.6K lbs | 3 |
| 2020 | 105.2K lbs | 3 |
| 2021 | 175.3K lbs | 6 |
| 2022 | 141.0K lbs | 6 |
| 2023 | 87.9K lbs | 4 |
| 2024 | 139.7K lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 3 of 6 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ammonia | 662.6K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 63.6K lbs | - |
| Lead | 606 lbs | Carcinogen |
| Polycyclic aromatic compounds | 32 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
National Grid Northport Power Station · AIR-pathway site
Nearest TRI Facilities to National Grid Northport Power Station
Closest other reporters in New York - including American Technical Ceramics, Long Island Sterilization, Parker Hannifin Corp Fluid Systems Div, 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. Transalta Centralia Generation / Mining, Cholla Power Plant, Rm Miller Power.
Compare beyond New York
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest National Grid Northport Power Station on cumulative reported pounds (587.1K lbs) and distinct chemical count (6). Release-pound peers include M G Waldbaum, Chicago Heights Steel, Union Carbide Corp Texas City Plant. Chemical-count peers include Eaton Intelligent Power Ltd, Leoni Wire Inc, Turf Care Supply-Hatfield Plant. 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 National Grid USA Facilities
Same-parent TRI sites ranked by reported releases - including National Grid E.f. Barrett Power Station, National Grid Port Jefferson 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, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Lead, Polycyclic aromatic compounds; nearby reporters include American Technical Ceramics. National Grid Northport 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 Northport 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 Northport Power Station totals are self-reported EPCRA §313 estimates for Northport, NY, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 221112 · Electric Utilities. 35.0% of Suffolk TRI pounds in this extract. Nearest ABS peer: M G Waldbaum (Δ 1 lbs). Pounds ≠ exposure.
National Grid Northport 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