EPA TRI Facility · Electric Utilities
Mankato Energy Center
Mankato, MN · Parent: Onward Energy
- Total releases
- 271.0K lbs
- Chemicals reported
- 1
- Latest report
- 2023
- Primary pathway
- Air Releases
AIR Form-R mix
Mankato Energy Center: how the 271.0K lbs splits
271.0K lbs across all reported pathways
- Air Releases 270.3K lbs 99.7%
- Off-site Transfers 704 lbs 0.3%
Mankato Energy Center's 271.0K lbs Form-R total is AIR - air releases is 99.7% of the bar. Next segment: off-site transfers at 0.3%. Leading chemical by pounds: Ammonia.
MID volume AIR pathway CLEAN
Mankato Energy Center is an EPA Toxics Release Inventory reporter in Mankato, MN, in the electric utilities sector. It reported 71.4K lbs of releases across 1 chemical in 2023, and 271.0K lbs in total across its 2019-2023 reporting years. That ranks 2,743 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Minnesota's 459 reporting TRI sites, pounds #1 is not chemical-count #1. Mankato Energy Center is pounds #52 and chemical-count #327 at 271.0K lbs. Xcel Energy Sherburne County Generating Plant leads reported pounds (21.5M lbs) at 24 chemicals (chemical-count #4). 3M Chemical Operations' Cottage Grove Facility leads chemical count at 72 chemicals (3.0M lbs, pounds #8). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Mps Mankato LLC; Crown Cork & Seal Co Inc; Chs Mankato; Adm. Similar-scale Electric Utilities peers outside Minnesota: Duke Energy Carolinas LLC - Allen Steam Station; Southwestern Public Service Co Tolk Station; National Grid E.f. Barrett Power Station; Cogen Technologies Linden Venture L.P.. Largest disclosed chemicals by pounds: Ammonia.
Mankato Energy Center stamps MID volume with a dominant AIR pathway (99.7% air releases) across 1 chemical. Cumulative Form-R extract: 271.0K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Duke Energy Carolinas LLC - Allen Steam Station and Southwestern Public Service Co Tolk Station.
Mankato Energy Center vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
271K lbs Top 11% higher than 89% 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
Mankato Energy Center: Ammonia-led volume
Among the 513 Electric Utilities facilities in this database, Mankato Energy Center reports the 272nd-largest volume (271.0K lbs). Its reported volume is concentrated rather than spread: Ammonia alone is 100% of the total. Scale peers outside Minnesota include Duke Energy Carolinas LLC - Allen Steam Station and Southwestern Public Service Co Tolk Station.
Concentrated means ≥60% of Mankato Energy Center's pounds in one chemical - here Ammonia at 100%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Mankato Energy Center's total reported releases rose from 50.3 thousand lb in 2022 to 71.4 thousand lb in 2023, based on EPA TRI filings.
- Mankato Energy Center's air releases rose from 50.1 thousand lb in 2022 to 71.2 thousand lb in 2023, based on EPA TRI filings.
- Mankato Energy Center's off-site transfers fell from 249 lb in 2022 to 194 lb in 2023, based on EPA TRI filings.
Mankato Energy Center Form-R facts
Compare this facility
See how Mankato Energy Center stacks up against nearby facilities and the typical reporter.
46.8× more than the comparison
75% less 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 Mankato Energy Center releases toxic chemicals into the environment. Total: 271.0K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 116% (33.0K lbs to 71.4K lbs).
Mankato Energy Center: annual Form-R pounds
MID site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Mankato Energy Center year-over-year reported totals (increased by 116% from 2019 to 2023). 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 | 33.0K lbs | 1 |
| 2020 | 38.3K lbs | 1 |
| 2021 | 78.0K lbs | 1 |
| 2022 | 50.3K lbs | 1 |
| 2023 | 71.4K lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2019–2023). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ammonia | 271.0K lbs | - |
Mankato Energy Center · AIR-pathway site
Nearest TRI Facilities to Mankato Energy Center
Closest other reporters in Minnesota - including Mps Mankato LLC, Crown Cork & Seal Co Inc, Chs Mankato, ordered by distance.
Showing 8 of 458 other reporting facilities in Minnesota.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Minnesota - e.g. Duke Energy Carolinas LLC - Allen Steam Station, Southwestern Public Service Co Tolk Station, National Grid E.f. Barrett Power Station.
Compare beyond Minnesota
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Mankato Energy Center on cumulative reported pounds (271.0K lbs) and distinct chemical count (1). Release-pound peers include Materion Advanced Chemicals, Rti Martinsville Inc, Greif Packaging LLC. Chemical-count peers include Ecoelectrica LP, Planta Penuelas, Tallaboa 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.
- Materion Advanced Chemicals Milwaukee, WI · Chemicals 270.6K lbs reported
- Rti Martinsville Inc Martinsville, VA · Fabricated Metals 270.6K lbs reported
- Greif Packaging LLC Florence, KY · Fabricated Metals 270.5K lbs reported
- Johnstown Wire Technologies Inc. Johnstown, PA · Primary Metals 270.5K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
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; nearby reporters include Mps Mankato LLC. Mankato Energy Center stamps MID volume · AIR pathway · CLEAN 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 Mankato Energy Center TRI extract (MID · AIR · CLEAN · lead Ammonia) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Mankato Energy Center totals are self-reported EPCRA §313 estimates for Mankato, MN, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 4.0% of Blue Earth TRI pounds in this extract. Nearest ABS peer: Materion Advanced Chemicals (Δ 404 lbs). Pounds ≠ exposure.
Mankato Energy Center stamps MID volume · AIR pathway · CLEAN · 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