Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PREPA - SAN JUAN STEAM PLANT
MERCADO CENTRAL AVE ZONA PORTUARIA RD PR-28, PUERTO NUEVO, PR, 00920
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) | Copper compounds | Ammonia | Nickel compounds | Vanadium compounds | Total (lbs) |
| 2024 | 40,277 | — | 22,530 | — | — | 63,073 |
| 2023 | 47,163 | — | 27,330 | — | — | 74,815 |
| 2022 | 86,138 | — | 30,453 | — | — | 117,079 |
| 2021 | 39,771 | — | 50,412 | — | — | 90,800 |
| 2020 | 96,709 | — | — | — | — | 97,632 |
| 2019 | 33,811 | — | — | — | — | 55,733 |
| 2018 | 60,482 | 23,978 | — | — | — | 86,256 |
| 2017 | 82,765 | 24,143 | — | — | — | 108,733 |
| 2016 | 120,183 | 23,218 | — | — | — | 145,207 |
| 2015 | 142,190 | 15,097 | — | — | — | 158,563 |
| 2014 | 149,704 | — | — | — | — | 150,539 |
| 2013 | 432,923 | 14,891 | — | — | — | 449,111 |
| 2012 | 470,104 | 12,355 | — | — | — | 483,576 |
| 2011 | 406,931 | 12,407 | — | — | — | 420,417 |
| 2010 | 427,514 | 11,511 | — | — | — | 440,155 |
| 2009 | 488,870 | — | — | — | — | 490,134 |
| 2008 | 424,824 | — | — | — | — | 425,241 |
| 2007 | 602,282 | — | — | — | — | 602,856 |
| 2006 | 509,769 | — | — | — | — | 511,969 |
| 2005 | 539,457 | — | — | — | — | 543,592 |
| 2004 | 502,122 | — | — | — | — | 505,744 |
| 2003 | 305,214 | — | — | 8,695 | 3,270 | 317,355 |
| 2002 | 1,223,282 | — | — | 11,374 | 4,409 | 1,239,413 |
| 2001 | 1,362,962 | — | — | 12,218 | 4,957 | 1,380,372 |
| 2000 | 1,431,424 | — | — | 12,899 | 24,702 | 1,469,127 |
| 1999 | 1,832,068 | — | — | 14,211 | — | 1,846,284 |
| 1998 | 1,945,623 | — | — | 40,863 | — | 1,986,491 |
▎ 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.