Facility detail

WESTON POWER PLANT

2491 OLD HIGHWAY 51, MOSINEE, WI, 54455

Parent company: WEC ENERGY GROUP

Carcinogen PBT — EPA classifications across all reporting years

Year-over-year total releases

Reported on-site TRI releases in pounds, grouped by reporting year.

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)) Hydrogen fluoride Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) Zinc compounds Total
2024 446,381 1,210 1,555 4,053 7,657 524,568
2023 32,143 1,045 1,344 4,989 980 55,977
2022 304,341 1,190 1,524 1,986 5,994 352,552
2021 170,808 34,764 1,673 2,176 4,669 239,379
2020 244,500 28,858 1,503 1,951 9,708 322,357
2019 214,268 23,907 1,617 2,099 8,166 281,885
2018 162,441 34,065 1,192 1,869 4,942 233,947
2017 130,417 27,404 305 1,334 5,206 197,547
2016 60,798 19,559 1,465 1,369 3,142 112,041
2015 630,389 33,281 3,063 2,076 24,639 775,690
2014 888,815 44,022 3,762 3,700 31,071 1,099,388
2013 284,804 60,000 7,200 37,000 8,723 452,728
2012 403,584 48,000 5,300 30,000 16,863 562,490
2011 315,068 65,000 6,400 38,000 12,102 487,950
2010 479,091 79,000 11,000 44,000 18,503 684,404
2009 83,158 32,000 12,000 37,000 10,604 213,671
2008 48,056 48,000 6,900 30,000 3,503 145,564
2007 90,514 79,000 6,200 22,000 4,001 211,246
2006 8,128 87,000 24,000 30,000 2,305 156,626
2005 16,839 92,000 26,000 32,000 3,807 180,459
2004 64,763 91,000 25,000 31,000 11,125 256,454
2003 4,691 110,000 15,000 29,000 1,962 163,780
2002 405,088 88,000 91,000 28,000 18,717 686,802
2001 527,354 88,000 92,000 33,000 23,715 831,140
2000 153,442 76,000 92,000 27,000 10,467 384,807
1999 202,966 75,000 92,000 16,000 12,874 420,651
1998 233,956 92,000 30,000 15,000 8,142 395,619