JOHN TWITTY ENERGY CENTER — Emissions Trend

Springfield, MO · 2019–2023 · Parent: CITY UTILITIES OF SPRINGFIELD MO

This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for JOHN TWITTY ENERGY CENTER, spanning 2019–2023. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.

Reported releases opened at 350.9K in 2019 and closed at 285.0K in 2023 — a decreasing of -18.8% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Barium And Barium Compounds at 1.1M, followed by Ammonia at 179.5K.

Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable — not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this electric utilities facility.

Overall Trend
↓ Decreasing (-18.8%)
2019 Total
350.9K lbs
2023 Total
285.0K lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
0107.4K214.7K322.1K429.4K536.8K 20192020202120222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2019 350.9K lbs 11
2020 266.7K lbs 11 -24.0%
2021 536.8K lbs 11 +101.3%
2022 409.4K lbs 11 -23.7%
2023 285.0K lbs 11 -30.4%

Top Chemicals by Year

Chemical 20192020202120222023 Total
Barium And Barium Compounds 275.9K 198.2K 374.2K 275.0K 1.1M
Ammonia 16.8K 13.9K 74.3K 42.1K 32.3K 179.5K
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) 176.3K 176.3K
Hydrogen fluoride 13.1K 16.6K 23.9K 34.8K 41.0K 129.3K
Vanadium compounds 14.9K 12.3K 22.3K 19.9K 13.4K 82.8K
Manganese And Manganese Compounds 9.5K 17.4K 14.5K 41.4K
Copper And Copper Compounds 8.8K 16.0K 14.3K 39.0K
Copper compounds 10.7K 9.6K 20.3K
Manganese compounds 12.1K 6.7K 18.8K
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 3.2K 4.0K 2.9K 3.2K 2.6K 15.9K
Lead And Lead Compounds 2.5K 2.0K 3.7K 3.3K 11.5K
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 1.6K 1.4K 2.1K 2.1K 1.5K 8.6K
Lead compounds 1.7K 1.7K
Mercury And Mercury Compounds 59 103 90 252
Mercury compounds 74 47 121

About This Data

Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.

A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.

Frequently Asked Questions

Is JOHN TWITTY ENERGY CENTER getting cleaner or dirtier?
Based on EPA TRI data from 2019–2023, JOHN TWITTY ENERGY CENTER's total toxic releases have decreased by approximately 19%.
What time period does this trend data cover?
This page shows 5 years of EPA Toxic Release Inventory data from 2019–2023. Release quantities are self-reported estimates filed annually by the facility.