Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
ROCKPORT PLANT
2791 NORTH US HIGHWAY 231, ROCKPORT, IN, 47635
Parent company: AMERICAN ELECTRIC POWER
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Hydrogen fluoride | Manganese compounds | Vanadium compounds | Total |
|---|---|---|---|---|---|---|
| 2024 | 814,823 | 33,000 | 113,000 | 91,215 | 74,872 | 1,381,540 |
| 2023 | 465,394 | 20,000 | 64,400 | 52,499 | 42,643 | 786,309 |
| 2022 | 956,657 | 41,000 | 133,000 | 107,469 | 87,769 | 1,619,696 |
| 2021 | 713,619 | 33,000 | 107,000 | 79,178 | 65,836 | 1,233,451 |
| 2020 | 596,080 | 25,000 | 87,800 | 66,164 | 55,190 | 1,021,822 |
| 2019 | 1,091,608 | 48,000 | 171,000 | 120,066 | 100,780 | 1,895,194 |
| 2018 | 1,688,884 | 13,000 | 252,000 | 189,566 | 155,616 | 2,872,147 |
| 2017 | 1,505,465 | 69,000 | 226,000 | 171,704 | 147,304 | 2,630,151 |
| 2016 | 1,805,286 | 88,000 | 244,000 | 195,255 | 166,501 | 3,089,263 |
| 2015 | 1,766,660 | 1,340,000 | 261,000 | 199,976 | 162,913 | 4,347,764 |
| 2014 | 2,319,463 | 2,010,000 | 336,000 | 257,355 | 207,663 | 5,963,051 |
| 2013 | 2,339,700 | 1,890,000 | 324,000 | 263,775 | 218,874 | 5,847,763 |
| 2012 | 2,651,106 | 1,980,000 | 381,000 | 295,387 | 249,840 | 6,486,959 |
| 2011 | 2,358,160 | 1,700,000 | 330,000 | 265,965 | 220,010 | 5,738,651 |
| 2010 | 1,916,675 | 2,000,000 | 350,000 | 203,585 | 181,110 | 5,422,700 |
| 2009 | 2,580,776 | 3,000,000 | 380,000 | 285,185 | 233,510 | 7,391,166 |
| 2008 | 2,500,180 | 2,400,000 | 400,000 | 274,195 | 225,610 | 6,700,770 |
| 2007 | 2,068,448 | 2,600,000 | 330,000 | 228,732 | 193,410 | 6,185,952 |
| 2006 | 2,505,130 | 5,000,000 | 410,000 | 268,657 | 228,410 | 9,404,920 |
| 2005 | 1,872,549 | 3,300,000 | 460,000 | 200,859 | 165,860 | 6,754,409 |
| 2004 | 1,108,918 | 1,900,000 | 380,000 | 114,056 | 84,370 | 3,955,224 |
| 2003 | 1,272,163 | 2,400,000 | 420,000 | 131,848 | 99,184 | 4,795,915 |
| 2002 | 1,369,117 | 1,400,000 | 340,000 | 138,456 | 91,910 | 3,731,543 |
| 2001 | 1,793,915 | 1,400,000 | 420,000 | 189,356 | 133,890 | 4,508,906 |
| 2000 | 1,221,018 | 1,900,000 | 440,000 | 116,748 | 91,150 | 4,232,777 |
| 1999 | 1,187,911 | 3,000,005 | 410,005 | 140,080 | — | 5,406,299 |
| 1998 | 1,279,663 | 1,700,005 | 370,005 | 144,636 | — | 4,008,283 |