EPA TRI Facility · Electric Utilities
Prepa-South Coast Power Plant
Guayanilla, PR · Parent: Puerto Rico Electric Power Authority
- Total releases
- 681.4K lbs
- Chemicals reported
- 8
- Carcinogens
- 2
- Primary pathway
- Air Releases
AIR Form-R mix
Prepa-South Coast Power Plant: how the 938.3K lbs splits
938.3K lbs across all reported pathways
- Air Releases 938.3K lbs 100.0%
Prepa-South Coast Power Plant's 938.3K lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. 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.
MID volume AIR pathway TRACE-CARC
Prepa-South Coast Power Plant is an EPA Toxics Release Inventory reporter in Guayanilla, PR, in the electric utilities sector. It reported 257.0K lbs of releases across 6 chemicals in 2024, and 681.4K lbs in total across its 2019-2024 reporting years. That ranks 1,630 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Puerto Rico's 104 reporting TRI sites, pounds #1 is not chemical-count #1. Prepa-South Coast Power Plant is pounds #8 and chemical-count #15 at 681.4K lbs. Ecw Landfill Corp. leads reported pounds (8.3M lbs) at 2 chemicals (chemical-count #41). Aes Puerto Rico LP leads chemical count at 25 chemicals (6.5M lbs, pounds #2). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Tallaboa Puerto Rico LLC; Peerless Oil & Chemicals Inc.; Ecoelectrica LP; Planta Penuelas. Similar-scale Electric Utilities peers outside Puerto Rico: Dominion Energy South Carolina - Wateree Station; Xcel Energy Bay Front Plant; American Electric Power Northeastern Plant; Montour Steam Electric Station. Other Puerto Rico Electric Power Authority sites in this extract: Prepa - Aguirre Power Generati on Complex; Prepa - Palo Seco Steam Plant; Prepa - San Juan Steam Plant; Prepa-Cambalache Combustion Turbine Plant. Largest disclosed chemicals by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); n-Hexane; Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Naphthalene.
Prepa-South Coast Power Plant stamps MID volume with a dominant AIR pathway (100.0% air releases) across 8 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 681.4K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Dominion Energy South Carolina - Wateree Station and Xcel Energy Bay Front Plant.
Prepa-South Coast Power Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
681K lbs Top 6% higher than 94% 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
Prepa-South Coast Power Plant inside Guayanilla Municipio's TRI pounds
Among the 513 Electric Utilities facilities in this database, Prepa-South Coast Power Plant reports the 212th-largest volume (681.4K lbs). This one site accounts for 100% of every pound reported in Guayanilla Municipio. Its reported volume is concentrated rather than spread: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) alone is 70.2% of the total. Scale peers outside Puerto Rico include Dominion Energy South Carolina - Wateree Station and Xcel Energy Bay Front Plant.
County-dominant here means ≥25% of Guayanilla Municipio's reported pounds (681.4K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Prepa-South Coast Power Plant's total reported releases rose from 242.5 thousand lb in 2022 to 262.7 thousand lb in 2023, based on EPA TRI filings.
- Prepa-South Coast Power Plant's air releases rose from 242.5 thousand lb in 2022 to 262.7 thousand lb in 2023, based on EPA TRI filings.
Prepa-South Coast Power Plant Form-R facts
Compare this facility
See how Prepa-South Coast Power Plant stacks up against nearby facilities and the typical reporter.
266.2× more than the comparison
8.0× 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 Prepa-South Coast Power Plant releases toxic chemicals into the environment. Total: 938.3K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases increased by 321% (61.1K lbs to 257.0K lbs).
Prepa-South Coast Power Plant: 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 Prepa-South Coast Power Plant year-over-year reported totals (increased by 321% 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: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 61.1K lbs | 4 |
| 2020 | 61.1K lbs | 3 |
| 2021 | 54.0K lbs | 5 |
| 2022 | 242.5K lbs | 6 |
| 2023 | 262.7K lbs | 6 |
| 2024 | 257.0K lbs | 6 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 2 of 8 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) | 658.8K lbs | - |
| n-Hexane | 176.1K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 102.7K lbs | - |
| Naphthalene | 517 lbs | Carcinogen |
| Lead compounds | 167 lbs | - |
| Lead And Lead Compounds | 63 lbs | - |
| Polycyclic aromatic compounds | 4 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 1 lbs | - |
Prepa-South Coast Power Plant · AIR-pathway site
Nearest TRI Facilities to Prepa-South Coast Power Plant
Closest other reporters in Puerto Rico - including Tallaboa Puerto Rico LLC, Peerless Oil & Chemicals Inc., Ecoelectrica LP, ordered by distance.
Showing 8 of 103 other reporting facilities in Puerto Rico.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Puerto Rico - e.g. Dominion Energy South Carolina - Wateree Station, Xcel Energy Bay Front Plant, American Electric Power Northeastern Plant.
Compare beyond Puerto Rico
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Prepa-South Coast Power Plant on cumulative reported pounds (681.4K lbs) and distinct chemical count (8). Release-pound peers include Patrick Industries Inc,dba Baymont Inc Belmont Facility, Actus Nutrition-Fond Du Lac, U.S. Marine Corps Twentynine Palms Air Ground Combat Center. Chemical-count peers include US Tsubaki Automotive LLC, Smith & Wesson Brands Inc., Prefere Melamines 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.
- Patrick Industries Inc,dba Baymont Inc Belmont Facility Golden, MS · Plastics and Rubber 681.4K lbs reported
- Actus Nutrition-Fond Du Lac Fond Du Lac, WI · Food 680.7K lbs reported
- U.S. Marine Corps Twentynine Palms Air Ground Combat Center Twentynine Palms, CA · Other 683.0K lbs reported
- Tesoro Refining & Marketing Co LLC Martinez, CA · Petroleum 683.5K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Puerto Rico Electric Power Authority Facilities
Same-parent TRI sites ranked by reported releases - including Prepa - Aguirre Power Generati on Complex, Prepa - Palo Seco Steam Plant, Prepa - San Juan Steam Plant.
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), n-Hexane, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Naphthalene; nearby reporters include Tallaboa Puerto Rico LLC. Prepa-South Coast Power Plant 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 Prepa-South Coast Power Plant TRI extract (MID · AIR · TRACE-CARC · 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.
Prepa-South Coast Power Plant totals are self-reported EPCRA §313 estimates for Guayanilla, PR, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 221112 · Electric Utilities. 100% of Guayanilla Municipio TRI pounds in this extract. Nearest ABS peer: Patrick Industries Inc,dba Baymont Inc Belmont Facility (Δ 68 lbs). Pounds ≠ exposure.
Prepa-South Coast Power Plant stamps MID volume · AIR pathway · TRACE-CARC · lead Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size). 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