Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HIBBARD RENEWABLE ENERGY CENTER
5300 MAIN ST, DULUTH, MN, 55807
Parent company: ALLETE INC/MINNESOTA POWER
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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Zinc compounds | Manganese And Manganese Compounds | Lead compounds | Lead And Lead Compounds | Total (lbs) |
| 2024 | 34,000 | 6 | — | — | 31 | 34,037 |
| 2023 | 33,000 | 6 | — | — | 29 | 33,035 |
| 2022 | 65,000 | 10 | — | — | 66 | 65,113 |
| 2021 | 45,210 | 29,872 | 20,402 | 210 | — | 95,694 |
▎ 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.