Uns Energy Corp
1 facility · 1 state · 13.7M lbs total releases
According to the EPA Toxics Release Inventory, Uns Energy Corp is the reported parent of 1 Form R facility across 1 state, disclosing 13.7M lbs of toxic releases. 4 of 18 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Arizona (13.7M lbs). Those TRI figures remain self-reported disclosure pounds for Uns Energy Corp, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for Uns Energy Corp: EPA TRI 2023 reporting year
Same facilities, both years
-10.3%
1 facilities that filed in 2022 and 2023
Whole inventory
-10.3%
2.7 million lb → 2.5 million lb, every facility that filed
- Uns Energy Corp's total reported releases fell from 2.7 million lb in 2022 to 2.5 million lb in 2023, based on EPA TRI filings.
- Uns Energy Corp's land releases fell from 2.6 million lb in 2022 to 2.3 million lb in 2023, based on EPA TRI filings.
- Uns Energy Corp's air releases fell from 162.8 thousand lb in 2022 to 156.3 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read Uns Energy Corp from filing to facility
Uns Energy Corp maps to a single Form R site (Springerville Generating Station) in Arizona. Open that filing for the chemical mix; pounds stay disclosure, not risk.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files Toxics Release Inventory (TRI) · August 2026
Largest Form R sites under this parent: Springerville Generating Station. Neighbor parents on the disclosure ladder: Freeport-McMoran Inc; Americas Mining Corp; Salt River Project Ai&pd; Real Alloy Holding LLC. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Manganese compounds; Ammonia; Vanadium compounds; Zinc compounds. Heaviest-reporting states in this extract: Arizona. Industry labels on the parent rollup: Electric Utilities.
Uns Energy Corp ranks #124 of 4,988 slug-merged TRI parents by disclosed release pounds, mid-to-upper among parents, not a top-25 volume name. Uns Energy Corp's TRI Form R footprint is concentrated in a single state (Arizona), so statewide context matters more than a multi-state portfolio read. This parent maps to a single reporting facility (Springerville Generating Station), so the company total and that site's Form R are the same disclosure.
Parent aggregation for Uns Energy Corp follows facility-reported names. Compare the named neighbors (Freeport-McMoran Inc; Americas Mining Corp; Salt River Project Ai&pd) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Uns Energy Corp sits among TRI parents
Uns Energy Corp sits on a disclosure ladder beside Freeport-McMoran Inc and Americas Mining Corp and Salt River Project Ai&pd and Real Alloy Holding LLC. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Freeport-McMoran Inc · rank #122 · 200.0M lbs
- Americas Mining Corp · rank #123 · 89.8M lbs
Lower disclosed volume
- Salt River Project Ai&pd · rank #125 · 1.9M lbs
- Real Alloy Holding LLC · rank #126 · 1.8M lbs
Largest chemicals disclosed by Uns Energy Corp
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Manganese compounds; Ammonia; Vanadium compounds; Zinc compounds lead the Form R pound rollup for this parent, including filings such as Springerville Generating Station. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 9.3M lbs |
| Manganese compounds | 1.3M lbs |
| Ammonia | 608.4K lbs |
| Vanadium compounds | 607.7K lbs |
| Zinc compounds | 399.4K lbs |
Facilities (1)
| Facility | Releases |
|---|---|
| Springerville Generating Station Springerville, AZ | 13.7M 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 Uns Energy Corp on total disclosed release pounds (13.7M lbs) and reporting facility count (1). Release-volume peers include Syngenta Corp, 3M Co, Ag Processing Inc. 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.
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are Arizona; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Uns Energy Corp's TRI parent record
From Uns Energy Corp, open Springerville Generating Station or compare against Freeport-McMoran Inc rather than reading rank alone.
- Open the largest Form R site for Uns Energy Corp (Springerville Generating Station in AZ). Largest facility
- Compare against Americas Mining Corp, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where Uns Energy Corp sits among all slug-merged TRI parents. All parent companies
Rank and peers (Freeport-McMoran Inc, Americas Mining Corp) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Uns Energy Corp'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.