EPA TRI Facility · Electric Utilities
Hawaiian Electric Co Inc Schofield Generating Station
Wahiawa, HI · Parent: Hawaiian Electric Industries Inc
- Total releases
- 521 lbs
- Chemicals reported
- 3
- Carcinogens
- 2
- Primary pathway
- Air Releases
AIR Form-R mix
Hawaiian Electric Co Inc Schofield Generating Station: how the 521 lbs splits
521 lbs across all reported pathways
- Air Releases 521 lbs 100.0%
Hawaiian Electric Co Inc Schofield Generating Station's 521 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: Ammonia.
TRACE volume AIR pathway CARC-MID
Hawaiian Electric Co Inc Schofield Generating Station is an EPA Toxics Release Inventory reporter in Wahiawa, HI, in the electric utilities sector. It reported 85 lbs of releases across 3 chemicals in 2023, and 521 lbs in total across its 2019-2023 reporting years. That ranks 14,744 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Hawaii's 36 reporting TRI sites, pounds #1 is not chemical-count #1. Hawaiian Electric Co Inc Schofield Generating Station is pounds #31 and chemical-count #27 at 521 lbs. Hawaiian Electric Co Inc Kahe Generating Station leads reported pounds (3.2M lbs) at 11 chemicals (chemical-count #5). Par Hawaii Refining LLC leads chemical count at 27 chemicals (841.7K lbs, pounds #5). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: U.S. Army Schofield Barracks - Range Facility; Hawaiian Electric Co Inc Waiau Generating Station; Hawaiian Electric Co Inc Kahe Generating Station; Joint Base Pearl Harbor-Hickam Hawaii. Similar-scale Electric Utilities peers outside Hawaii: Mayaguez Gas Turbines Power Plant; Dededo Combustion Turbine Generating Facility; Gulf Power Co Plant Lansing Smith; Kansas City Bpu Quindaro Power Station. Other Hawaiian Electric Industries Inc sites in this extract: Hawaiian Electric Co Inc Kahe Generating Station; Hawaiian Electric Co Inc Waiau Generating Station; Maui Electric Co Ltd Kahului Generating Station; Hill Generating Station. Largest disclosed chemicals by pounds: Ammonia; Naphthalene; Polycyclic aromatic compounds.
Hawaiian Electric Co Inc Schofield Generating Station stamps TRACE volume with a dominant AIR pathway (100.0% air releases) across 3 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 521 lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Mayaguez Gas Turbines Power Plant and Dededo Combustion Turbine Generating Facility.
Hawaiian Electric Co Inc Schofield Generating Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
521 lbs 43rd percentile higher than 43% 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
Hawaiian Electric Co Inc Schofield Generating Station in the Electric Utilities sector extract
Among the 513 Electric Utilities facilities in this database, Hawaiian Electric Co Inc Schofield Generating Station reports the 420th-largest volume (521 lbs). Scale peers outside Hawaii include Mayaguez Gas Turbines Power Plant and Dededo Combustion Turbine Generating Facility.
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
- Hawaiian Electric Co Inc Schofield Generating Station's total reported releases rose from 61 lb in 2022 to 85 lb in 2023, based on EPA TRI filings.
- Hawaiian Electric Co Inc Schofield Generating Station's air releases rose from 61 lb in 2022 to 85 lb in 2023, based on EPA TRI filings.
Hawaiian Electric Co Inc Schofield Generating Station Form-R facts
Compare this facility
See how Hawaiian Electric Co Inc Schofield Generating Station stacks up against nearby facilities and the typical reporter.
100% less than the comparison
25% 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 Hawaiian Electric Co Inc Schofield Generating Station releases toxic chemicals into the environment. Total: 521 lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 54% (185 lbs to 85 lbs).
Hawaiian Electric Co Inc Schofield Generating Station: annual Form-R pounds
TRACE site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Hawaiian Electric Co Inc Schofield Generating Station year-over-year reported totals (decreased by 54% 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 | 185 lbs | 3 |
| 2020 | 103 lbs | 3 |
| 2021 | 88 lbs | 3 |
| 2022 | 61 lbs | 3 |
| 2023 | 85 lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 2 of 3 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ammonia | 359 lbs | - |
| Naphthalene | 157 lbs | Carcinogen |
| Polycyclic aromatic compounds | 5 lbs | Carcinogen |
Hawaiian Electric Co Inc Schofield Generating Station · AIR-pathway site
Nearest TRI Facilities to Hawaiian Electric Co Inc Schofield Generating Station
Closest other reporters in Hawaii - including U.S. Army Schofield Barracks - Range Facility, Hawaiian Electric Co Inc Waiau Generating Station, Hawaiian Electric Co Inc Kahe Generating Station, ordered by distance.
Showing 8 of 35 other reporting facilities in Hawaii.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Hawaii - e.g. Mayaguez Gas Turbines Power Plant, Dededo Combustion Turbine Generating Facility, Gulf Power Co Plant Lansing Smith.
Other Hawaiian Electric Industries Inc Facilities
Same-parent TRI sites ranked by reported releases - including Hawaiian Electric Co Inc Kahe Generating Station, Hawaiian Electric Co Inc Waiau Generating Station, Maui Electric Co Ltd Kahului Generating 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 Ammonia, Naphthalene, Polycyclic aromatic compounds; nearby reporters include U.S. Army Schofield Barracks - Range Facility. Hawaiian Electric Co Inc Schofield Generating Station stamps TRACE volume · AIR pathway · CARC-MID 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 Hawaiian Electric Co Inc Schofield Generating Station TRI extract (TRACE · AIR · CARC-MID · lead Ammonia) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Hawaiian Electric Co Inc Schofield Generating Station totals are self-reported EPCRA §313 estimates for Wahiawa, HI, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 0.0% of Honolulu TRI pounds in this extract. Nearest ABS peer: Brainerd LLC (Δ 0 lbs). Pounds ≠ exposure.
Hawaiian Electric Co Inc Schofield Generating Station stamps TRACE volume · AIR pathway · CARC-MID · 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