Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PREPA - PALO SECO STEAM PLANT
PR-165 KM. 31.8, TOA BAJA, PR, 00949
Parent company: PUERTO RICO ELECTRIC POWER AUTHORITY
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) | Nickel compounds | Vanadium compounds | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Copper compounds | Total (lbs) |
| 2024 | 53,555 | — | — | — | — | 53,732 |
| 2023 | 131,546 | — | — | — | — | 131,981 |
| 2022 | 147,722 | — | — | — | — | 148,178 |
| 2021 | 112,017 | — | — | — | — | 112,362 |
| 2020 | 160,243 | — | — | — | — | 161,007 |
| 2019 | 104,382 | — | — | — | — | 104,681 |
| 2018 | 80,485 | — | — | — | — | 80,757 |
| 2017 | 40,784 | — | — | — | — | 41,112 |
| 2016 | 132,687 | — | — | — | — | 133,023 |
| 2015 | 93,244 | — | — | — | — | 93,787 |
| 2014 | 97,678 | — | — | — | — | 97,811 |
| 2013 | 505,059 | — | — | — | — | 505,393 |
| 2012 | 692,202 | — | — | — | — | 692,678 |
| 2011 | 690,473 | — | — | — | — | 690,967 |
| 2010 | 802,483 | 17,988 | — | 25,587 | — | 846,609 |
| 2009 | 487,314 | — | — | — | — | 487,801 |
| 2008 | 177,569 | — | — | — | — | 177,863 |
| 2007 | — | — | — | — | 15,461 | 16,581 |
| 2006 | 778,320 | 20,936 | — | — | — | 800,035 |
| 2005 | 766,688 | — | — | — | — | 772,032 |
| 2004 | 783,594 | 22,078 | — | — | — | 813,374 |
| 2003 | 977,280 | 21,742 | 8,228 | — | — | 1,011,238 |
| 2002 | 2,247,960 | 21,395 | 7,665 | — | — | 2,277,598 |
| 2001 | 2,340,334 | 19,769 | 17,286 | — | — | 2,378,322 |
| 2000 | 1,956,298 | 24,497 | 17,571 | — | — | 1,999,155 |
| 1999 | 806,312 | 21,800 | — | — | — | 828,617 |
| 1998 | 1,124,008 | 47,842 | — | — | — | 1,171,865 |
▎ 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.