EPA TRI Facility · Electric Utilities
Duke Energy Progress Llc-Mayo Electric Generating Plant
Roxboro, NC · Parent: Duke Energy Corp
- Total releases
- 1.9M lbs
- Chemicals reported
- 19
- Carcinogens
- 4
- Primary pathway
- Land Disposal
MIXED Form-R mix
Duke Energy Progress Llc-Mayo Electric Generating Plant: how the 1.9M lbs splits
1.9M lbs across all reported pathways
- Land Disposal 1.1M lbs 57.0%
- Air Releases 809.9K lbs 42.4%
- Water Discharges 9.6K lbs 0.5%
- Off-site Transfers 1.3K lbs 0.1%
Duke Energy Progress Llc-Mayo Electric Generating Plant's 1.9M lbs Form-R total is MIXED - land disposal is 57.0% of the bar. Next segment: air releases at 42.4%. Leading chemical by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size).
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.
HEAVY volume MIXED pathway CARC-LEAN
Duke Energy Progress Llc-Mayo Electric Generating Plant is an EPA Toxics Release Inventory reporter in Roxboro, NC, in the electric utilities sector. It reported 492.5K lbs of releases across 14 chemicals in 2023, and 1.9M lbs in total across its 2019-2023 reporting years. That ranks 875 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In North Carolina's 787 reporting TRI sites, pounds #1 is not chemical-count #1. Duke Energy Progress Llc-Mayo Electric Generating Plant is pounds #30 and chemical-count #10 at 1.9M lbs. Befesa Zinc Metal LLC leads reported pounds (43.1M lbs) at 4 chemicals (chemical-count #158). Pcs Phosphate Co Inc leads chemical count at 29 chemicals (22.9M lbs, pounds #2). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Louisiana Pacific Corp. Roxboro Osb; Sunrock Industries LLC - Woodsdale; Cpi USA North Carolina LLC; Certainteed Gypsum Nc Inc. Similar-scale Electric Utilities peers outside North Carolina: Coronado Generating Station; Winyah Generating Station; John Twitty Energy Center; Calaveras Power Station. Other Duke Energy Corp sites in this extract: Gibson Generating Station; Duke Energy Indiana Inc. Cayuga Generating Station; Duke Energy Carolinas LLC - Marshall Steam Station; Duke Energy Progress LLC - Roxboro Steam Electric Plant. Largest disclosed chemicals by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Vanadium compounds; Manganese compounds.
Duke Energy Progress Llc-Mayo Electric Generating Plant is a HEAVY · MIXED-pathway Form-R site in Roxboro, NC: 1.9M lbs across 19 chemicals (4 carcinogen-classified, CARC-LEAN). No single media clears 70% of the bar (lead segment land disposal at 57.0%). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Coronado Generating Station and Winyah Generating Station.
Duke Energy Progress Llc-Mayo Electric Generating Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.9M lbs Top 3% higher than 97% 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
Duke Energy Progress Llc-Mayo Electric Generating Plant in the Electric Utilities sector extract
Among the 513 Electric Utilities facilities in this database, Duke Energy Progress Llc-Mayo Electric Generating Plant reports the 151st-largest volume (1.9M lbs). Scale peers outside North Carolina include Coronado Generating Station and Winyah Generating Station.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Duke Energy Progress Llc-Mayo Electric Generating Plant's total reported releases rose from 410.7 thousand lb in 2022 to 492.5 thousand lb in 2023, based on EPA TRI filings.
- Duke Energy Progress Llc-Mayo Electric Generating Plant's land releases rose from 181.1 thousand lb in 2022 to 273.1 thousand lb in 2023, based on EPA TRI filings.
- Duke Energy Progress Llc-Mayo Electric Generating Plant's off-site transfers fell from 342 lb in 2022 to 173 lb in 2023, based on EPA TRI filings.
- Duke Energy Progress Llc-Mayo Electric Generating Plant's water releases fell from 2.1 thousand lb in 2022 to 1.7 thousand lb in 2023, based on EPA TRI filings.
Duke Energy Progress Llc-Mayo Electric Generating Plant Form-R facts
Compare this facility
See how Duke Energy Progress Llc-Mayo Electric Generating Plant stacks up against nearby facilities and the typical reporter.
5.6× more than the comparison
3.2× 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 Duke Energy Progress Llc-Mayo Electric Generating Plant releases toxic chemicals into the environment. Total: 1.9M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 18% (418.9K lbs to 492.5K lbs).
Duke Energy Progress Llc-Mayo Electric Generating Plant: annual Form-R pounds
HEAVY site · MIXED pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Duke Energy Progress Llc-Mayo Electric Generating Plant year-over-year reported totals (increased by 18% 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: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 418.9K lbs | 17 |
| 2020 | 134.8K lbs | 13 |
| 2021 | 453.8K lbs | 15 |
| 2022 | 410.7K lbs | 14 |
| 2023 | 492.5K lbs | 14 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 4 of 19 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 772.0K lbs | - |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 523.3K lbs | - |
| Vanadium compounds | 203.3K lbs | - |
| Manganese compounds | 120.1K lbs | - |
| Zinc compounds | 114.8K lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 45.0K lbs | - |
| Lead And Lead Compounds | 33.1K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 31.8K lbs | - |
| Copper compounds | 24.1K lbs | - |
| Nickel compounds | 21.2K lbs | Carcinogen |
| Lead compounds | 17.5K lbs | - |
| Ammonia | 2.3K lbs | - |
| Hydrogen fluoride | 1.6K lbs | - |
| Mercury And Mercury Compounds | 382 lbs | - |
| Mercury compounds | 202 lbs | - |
| Polycyclic aromatic compounds | 6 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
| Naphthalene | 0 lbs | Carcinogen |
Duke Energy Progress Llc-Mayo Electric Generating Plant in Person
Nearest TRI Facilities to Duke Energy Progress Llc-Mayo Electric Generating Plant
Closest other reporters in North Carolina - including Louisiana Pacific Corp. Roxboro Osb, Sunrock Industries LLC - Woodsdale, Cpi USA North Carolina LLC, ordered by distance.
Showing 8 of 786 other reporting facilities in North Carolina.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside North Carolina - e.g. Coronado Generating Station, Winyah Generating Station, John Twitty Energy Center.
Compare beyond North Carolina
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Duke Energy Progress Llc-Mayo Electric Generating Plant on cumulative reported pounds (1.9M lbs) and distinct chemical count (19). Release-pound peers include Valero Three Rivers Refinery, Johns Manville, Mullins Cheese Inc. Chemical-count peers include Allnex USA Inc. Wallingford Ct Site, Johnson Matthey, Colver Green Energy. 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 Duke Energy Corp Facilities
Same-parent TRI sites ranked by reported releases - including Gibson Generating Station, Duke Energy Indiana Inc. Cayuga Generating Station, Duke Energy Carolinas LLC - Marshall Steam Station.
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 Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Vanadium compounds, Manganese compounds; nearby reporters include Louisiana Pacific Corp. Roxboro Osb. Duke Energy Progress Llc-Mayo Electric Generating Plant stamps HEAVY volume · MIXED pathway · CARC-LEAN 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 Duke Energy Progress Llc-Mayo Electric Generating Plant TRI extract (HEAVY · MIXED · CARC-LEAN · lead Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Duke Energy Progress Llc-Mayo Electric Generating Plant totals are self-reported EPCRA §313 estimates for Roxboro, NC, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 15.2% of Person TRI pounds in this extract. Nearest ABS peer: Valero Three Rivers Refinery (Δ 506 lbs). Pounds ≠ exposure.
Duke Energy Progress Llc-Mayo Electric Generating Plant stamps HEAVY · MIXED pathway (land disposal leads at 57.0%). Pipeline-rendered EPA Form-R only - no editor-typed pounds. 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