Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PREPA-SOUTH COAST POWER PLANT
PR-127 KM 15.7, GUAYANILLA, PR, 00656
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 | n-Hexane | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Vanadium compounds | Total (lbs) |
| 2024 | 222,186 | — | — | 34,585 | — | 256,955 |
| 2023 | 227,138 | — | — | 35,356 | — | 262,682 |
| 2022 | 209,429 | — | — | 32,737 | — | 242,467 |
| 2021 | — | — | 53,990 | — | — | 54,049 |
| 2020 | — | — | 61,075 | — | — | 61,075 |
| 2019 | — | — | 61,075 | — | — | 61,097 |
| 2018 | — | — | 61,075 | — | — | 61,134 |
| 2017 | 68,269 | — | 46,216 | — | — | 114,619 |
| 2016 | 98,226 | — | 59,096 | — | — | 157,516 |
| 2015 | 138,310 | — | 59,107 | — | — | 197,673 |
| 2014 | 117,070 | — | 49,896 | — | — | 167,449 |
| 2013 | 175,176 | — | 53,720 | — | — | 228,937 |
| 2012 | 633,382 | — | 32,320 | 34,348 | — | 700,382 |
| 2011 | 897,309 | — | — | 49,311 | — | 947,061 |
| 2010 | 917,893 | — | — | 50,433 | — | 968,777 |
| 2009 | 997,272 | 25,114 | — | — | — | 1,023,280 |
| 2008 | 1,193,818 | 30,532 | — | — | 15,052 | 1,240,415 |
| 2007 | 1,181,682 | 29,673 | — | — | — | 1,212,417 |
| 2006 | 1,564,018 | 28,249 | — | — | — | 1,593,436 |
| 2005 | 1,698,469 | 29,818 | 697 | — | — | 1,730,137 |
| 2004 | 2,170,834 | 28,606 | — | — | 10,715 | 2,211,093 |
| 2003 | 2,207,212 | 29,291 | 582 | — | 11,031 | 2,248,687 |
| 2002 | 1,214,483 | 27,013 | — | — | 10,104 | 1,252,376 |
| 2001 | 2,378,249 | 30,578 | 250 | — | 11,429 | 2,421,624 |
| 2000 | 2,664,452 | 32,554 | 250 | — | 31,912 | 2,729,722 |
| 1999 | 4,450,427 | 170,521 | 250 | — | — | 4,621,698 |
| 1998 | 3,397,289 | 108,592 | 5 | — | — | 3,505,896 |
| 1987 | — | — | — | — | — | 2,650 |
▎ 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.