National Grid USA
4 facilities · 1 state · 979.7K lbs total releases
According to the EPA Toxics Release Inventory, National Grid USA is the reported parent of 4 Form R facilities across 1 state, disclosing 979.7K lbs of toxic releases. 4 of 16 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is New York (979.7K lbs). Those TRI figures remain self-reported disclosure pounds for National Grid USA, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for National Grid USA: EPA TRI 2023 reporting year
Same facilities, both years
-26.5%
3 facilities that filed in 2022 and 2023
Whole inventory
-26.5%
221.3 thousand lb → 162.7 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- National Grid USA's total reported releases fell from 221.3 thousand lb in 2022 to 162.7 thousand lb in 2023, based on EPA TRI filings.
- National Grid USA's off-site transfers rose from 165 lb in 2022 to 744 lb in 2023, based on EPA TRI filings.
- National Grid USA's chemicals reported fell from 7 in 2022 to 4 in 2023, based on EPA TRI filings.
- National Grid USA's air releases fell from 221.1 thousand lb in 2022 to 161.9 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read National Grid USA from filing to facility
Largest Form R sites under this parent: National Grid Northport Power Station; National Grid E.f. Barrett Power Station; National Grid Port Jefferson Power Station; National Grid Wading River Ic Facility. Neighbor parents on the disclosure ladder: Anheuser-Busch Cos LLC; Finch Paper Holdings. 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; Naphthalene. Heaviest-reporting states in this extract: New York. Industry labels on the parent rollup: Electric Utilities. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Largest Form R sites under this parent: National Grid Northport Power Station; National Grid E.f. Barrett Power Station; National Grid Port Jefferson Power Station; National Grid Wading River Ic Facility. Neighbor parents on the disclosure ladder: Anheuser-Busch Cos LLC; Finch Paper Holdings. 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; Naphthalene. Heaviest-reporting states in this extract: New York. Industry labels on the parent rollup: Electric Utilities.
National Grid USA ranks #647 of 4,988 slug-merged TRI parents, a smaller disclosed-volume parent relative to the national Form R parent set. National Grid USA's TRI Form R footprint is concentrated in a single state (New York), so statewide context matters more than a multi-state portfolio read. National Grid USA's disclosed pounds are spread across 4 facilities, no single site dominates the parent total in this extract.
Parent aggregation for National Grid USA follows facility-reported names. Compare the named neighbors (Anheuser-Busch Cos LLC; Finch Paper Holdings) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where National Grid USA sits among TRI parents
National Grid USA sits on a disclosure ladder beside Anheuser-Busch Cos LLC and Finch Paper Holdings. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Anheuser-Busch Cos LLC · rank #645 · 6.8M lbs
- Finch Paper Holdings · rank #646 · 4.9M lbs
Largest chemicals disclosed by National Grid USA
Ammonia; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Lead; Polycyclic aromatic compounds; Naphthalene lead the Form R pound rollup for this parent, including filings such as National Grid Northport Power Station. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Ammonia | 1.1M lbs |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 63.6K lbs |
| Lead | 928 lbs |
| Polycyclic aromatic compounds | 146 lbs |
| Naphthalene | 45 lbs |
Facilities (4)
| Facility | Releases |
|---|---|
| National Grid Northport Power Station Northport, NY | 587.1K lbs |
| National Grid E.f. Barrett Power Station Island Park, NY | 265.9K lbs |
| National Grid Port Jefferson Power Station Port Jefferson, NY | 126.5K lbs |
| National Grid Wading River Ic Facility Wading River, NY | 96 lbs |
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest National Grid USA on total disclosed release pounds (979.7K lbs) and reporting facility count (4). Release-volume peers include Molded Fiber Glass Co, Milk Specialties Global (dba Actus Nutrition), Ametek Inc. Facility-count peers include A Stucki Holding Corp, Advanced Heat Treat Corp, Alleima USA LLC. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
Similar facility count
Nearest parents by reporting-site count (deduped against the release-pound neighborhood).
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are New York; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with National Grid USA's TRI parent record
From National Grid USA, open National Grid Northport Power Station or compare against Anheuser-Busch Cos LLC rather than reading rank alone.
- Open the largest Form R site for National Grid USA (National Grid Northport Power Station in NY). Largest facility
- Compare against Finch Paper Holdings, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where National Grid USA sits among all slug-merged TRI parents. All parent companies
Rank and peers (Anheuser-Busch Cos LLC, Finch Paper Holdings) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
National Grid USA's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
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.