Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HAWAIIAN ELECTRIC CO INC WAIAU GENERATING STATION
475 KAMEHAMEHA HWY, PEARL CITY, HI, 96782
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) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ammonia | Nickel compounds | Lead compounds | Total (lbs) |
| 2024 | 170,000 | — | 62,000 | — | — | 232,162 |
| 2023 | 250,000 | — | 78,000 | — | — | 328,169 |
| 2022 | 180,000 | — | 56,600 | — | — | 236,742 |
| 2021 | 170,000 | — | 53,400 | — | 69 | 223,512 |
| 2020 | 140,000 | — | 44,600 | — | 58 | 184,689 |
| 2019 | 200,000 | — | 60,000 | — | 74 | 260,113 |
| 2018 | 150,000 | — | 59,000 | — | 85 | 209,141 |
| 2017 | 180,000 | — | 56,600 | — | 76 | 236,737 |
| 2016 | 180,000 | — | 55,280 | — | 71 | 235,384 |
| 2015 | 220,000 | — | 70,480 | — | 491 | 291,010 |
| 2014 | 210,000 | — | 61,240 | — | 76 | 271,346 |
| 2013 | 200,000 | 26,000 | 59,260 | — | 92 | 285,357 |
| 2012 | 190,000 | 26,000 | 59,160 | — | 91 | 275,255 |
| 2011 | 170,000 | 26,000 | 60,360 | — | 94 | 256,462 |
| 2010 | 175,000 | 29,000 | 66,240 | — | 103 | 270,351 |
| 2009 | 240,000 | 100,000 | 81,560 | 21,002 | 552 | 443,144 |
| 2008 | 200,000 | 90,000 | — | 20,002 | 502 | 310,528 |
| 2007 | 220,000 | 100,000 | — | 21,002 | 552 | 341,587 |
| 2006 | 200,000 | 96,000 | — | 21,003 | 544 | 317,575 |
| 2005 | 220,000 | 99,000 | — | 21,001 | 561 | 340,606 |
| 2004 | 230,000 | 94,000 | — | 20,001 | 531 | 344,577 |
| 2003 | 180,000 | 88,000 | — | — | 441 | 268,467 |
| 2002 | 250,000 | 96,000 | — | 19,305 | 504 | 365,830 |
| 2001 | 250,000 | 87,000 | — | — | 608 | 337,667 |
| 2000 | 27,000 | 80,000 | — | — | — | 107,028 |
| 1999 | 26,000 | 87,000 | — | — | — | 113,000 |
| 1998 | 22,000 | 83,912 | — | — | — | 105,912 |
▎ 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.