HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION
KEAAU, HI · HAWAII COUNTY · NAICS 221112
Data updated May 2026
According to the EPA Greenhouse Gas Reporting Program, HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION ranks #4,260 of 8,713 U.S. reporting facilities by latest reported CO₂e and #17 of 29 facilities in HI.
- National rank #4,260 of 8,713 GHGRP facilities
- #17 of 29 in HI
- #1,137 of 1,732 in Power Plants
- 1.1% of HAWAIIAN ELECTRIC INDUSTRIES parent CO₂e
- 2023 mix: 0.3% non-CO₂ (N₂O-led)
- -43.1% since 2011
HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION vs all U.S. GHGRP facilities
Where this site's latest reported Scope 1 CO₂e sits among every EPA GHGRP reporting facility
49,709 4260th of 8713 higher than 4,453 of 8,713 facilities
GHGRP facilities, banded by latest reported CO₂e (MT)
Each bar is a band; taller bars hold more facilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA Greenhouse Gas Reporting Program · 2023
Facility footprint context
This site accounts for 1.1% of HAWAIIAN ELECTRIC INDUSTRIES reported parent CO₂e (50K MT of 4.5M MT ; #9 of 11 GHGRP facilities under that parent ). Inside the EPA Power Plants sector it ranks #1,137 of 1,732 facilities by latest CO₂e. Shares use GHGRP facility rollups only, not Scope 2/3 or non-reporting sites.
2023 gas mix desk
Of 50K MT CO₂e reported for 2023, non-CO₂ gases are 0.3% , led by N₂O at 0.2% . Component shares use this facility's GHGRP CO₂ / CH₄ / N₂O rows for that year (already CO₂e-weighted).
- CO₂
- 99.7%
- 50K MT
- CH₄
- 0.1%
- 50 MT
- N₂O
- 0.2%
- 120 MT
Emissions decline across reporting years
| Year | Total CO2e (MT) |
|---|---|
| 2023 | 49,709 |
| 2022 | 59,331 |
| 2021 | 85,018 |
| 2020 | 58,993 |
| 2019 | 66,809 |
| 2018 | 44,340 |
| 2017 | 23,949 |
| 2016 | 19,717 |
| 2015 | 20,219 |
| 2014 | 50,243 |
| 2013 | 88,929 |
| 2012 | 81,319 |
| 2011 | 87,333 |
Facility insight: HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION
HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION (EPA GHGRP Facility ID 1001555) reported 50K metric tons of CO2-equivalent in 2023, operating in KEAAU, HI within HAWAII COUNTY. Among GHGRP reporters it ranks #4,260 of 8,713 nationally by latest CO₂e and #17 of 29 in HI. The site is classified under Power Plants with NAICS code 221112.
Across 2011–2023, annual CO₂e fell 43.1%; peak load was 89K MT in 2013. This facility has filed every year from 2011 to 2023, a complete 13-year record.
Peak year was 2013 at 89K MT CO2e; latest 2023 sits 44.1% below that peak (50K MT). The largest year-to-year move was 2013→2014 (-43.5%, 39K MT).
Frequently Asked Questions
Where does HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION rank among U.S. GHGRP facilities? ▼
According to the EPA Greenhouse Gas Reporting Program, HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION ranks #4,260 of 8,713 reporting facilities by latest reported CO₂e, and #17 of 29 facilities in HI (same sort as the state facility table). See /methodology#corpus-placement.
What share of GHGRP facilities report less CO₂e than HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION? ▼
HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION's 50K MT CO₂e is higher than 4,453 of the 8,713 GHGRP facilities with reported emissions (51%), an exact count from the full corpus, not an estimate.
How much CO2 does HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION emit? ▼
HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION reported 50K MT CO2e in 2023.
What share of HAWAIIAN ELECTRIC INDUSTRIES does HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION represent? ▼
HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION accounts for 1.1% of HAWAIIAN ELECTRIC INDUSTRIES's reported GHGRP CO₂e (50K MT of 4.5M MT), ranking #9 of 11 facilities under that parent.
What is HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION's 2023 CO₂ / CH₄ / N₂O mix? ▼
In 2023, non-CO₂ gases were 0.3% of reported CO₂e at HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION, with N₂O the larger non-CO₂ share at 0.2% (CO₂ 99.7%). Shares use the facility's GHGRP gas components for that year.
Where does HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION rank inside Power Plants? ▼
Among EPA GHGRP facilities tagged Power Plants, HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION ranks #1,137 of 1,732 by latest reported CO₂e.
Is HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION reducing emissions? ▼
Over 13 reporting years (2011–2023), HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION's emissions have decreased by 43.1%. This suggests meaningful progress in emissions reduction.
Nationwide facilities with similar CO₂e or sector
Two GHGRP-derived peer sets for HAWAII ELECTRIC LIGHT CO (HELCO) - PUNA GENERATING STATION, both outside HI so the neighborhoods are not state-geo containment.
Similar reported CO₂e
Nearest latest-year facility totals outside HI (50K MT here).
Similar Power Plants CO₂e
Nearest same-sector facility totals outside HI.