Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HAWAII ELECTRIC LIGHT CO INC PUNA GENERATING STATION
PUNA MILL RD, KEAAU, HI, 96749
Parent company: HAWAIIAN ELECTRIC INDUSTRIES INC
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Polycyclic aromatic compounds | Naphthalene | Benzo[g,h,i]perylene | Total (lbs) | |
| 2024 | 46,000 | 32 | 28 | 0 | 46,060 | |
| 2023 | — | 27 | 24 | 0 | 51 | |
| 2022 | — | 32 | 28 | 0 | 60 | |
| 2021 | 41,000 | 22 | 19 | 0 | 41,041 | |
| 2020 | 33,000 | 12 | 11 | 0 | 33,023 | |
| 2019 | 38,000 | 14 | 13 | 0 | 38,027 | |
| 2018 | — | 10 | 9 | 0 | 19 | |
| 2017 | — | 4 | 4 | 0 | 8 | |
| 2016 | — | 3 | 3 | — | 6 | |
| 2015 | — | 8 | 7 | 0 | 15 | |
| 2014 | 40,000 | 1 | — | — | 40,001 | |
| 2013 | 64,000 | 3 | — | 0 | 64,003 | |
| 2012 | 61,000 | 1 | — | — | 61,001 | |
| 2011 | 65,000 | 6 | — | 0 | 65,006 | |
| 2010 | 58,000 | 5 | — | 0 | 58,005 | |
| 2009 | 110,000 | 4 | — | 0 | 110,004 | |
| 2008 | 103,000 | 4 | — | 0 | 103,004 | |
| 2007 | 92,000 | 6 | — | 0 | 92,006 | |
| 2006 | 100,000 | 12 | — | 0 | 100,012 | |
| 2005 | 101,000 | 14 | — | 0 | 101,014 | |
| 2004 | 79,000 | 16 | — | 0 | 79,016 | |
| 2003 | 79,000 | 22 | — | 0 | 79,022 | |
| 2002 | 97,000 | 38 | — | 1 | 97,039 | |
| 2001 | 110,000 | 155 | — | — | 110,155 | |
| 2000 | — | 434 | — | — | 434 | |
| 1999 | 136,000 | — | — | — | 136,000 | |
| 1998 | 138,602 | — | — | — | 138,602 | |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.