John Twitty Energy Center
Greene County, Missouri · EIA plant ID 6195 · Operator: City Utilities of Springfield - (MO)
Nameplate603MWSummer 563 MW
Generators4in service
Net generation1,913GWh12 mo to Aug 2026
Capacity factor36%gas/coal/oil units, summer MW
Heat rate10,746Btu/kWhfossil units, electric fuel, HHV
First online1976Runs as intermediate
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1,398.9 | — | — |
| 2002 | 1,182.5 | — | — |
| 2003 | 1,347.3 | 47.2% | 10,606 |
| 2004 | 1,288.3 | 52.0% | 10,885 |
| 2005 | 1,276.8 | 51.7% | 10,937 |
| 2006 | 1,187.4 | 48.1% | 10,707 |
| 2007 | 1,339.5 | 54.2% | 10,953 |
| 2008 | 961.3 | 38.8% | 10,864 |
| 2009 | 1,194 | 48.3% | 10,392 |
| 2010 | 1,364.6 | 53.5% | 10,526 |
| 2011 | 2,536.4 | 50.8% | 9,975 |
| 2012 | 1,982.1 | 39.6% | 10,171 |
| 2013 | 2,340.9 | 47.5% | 9,874 |
| 2014 | 2,426.7 | 49.2% | 10,112 |
| 2015 | 1,870.6 | 37.9% | 10,405 |
| 2016 | 2,096.6 | 42.4% | 10,425 |
| 2017 | 1,958.2 | 39.7% | 10,328 |
| 2018 | 2,572.8 | 52.2% | 10,302 |
| 2019 | 1,785 | 36.2% | 10,643 |
| 2020 | 1,635.8 | 33.1% | 10,557 |
| 2021 | 2,478.1 | 50.2% | 10,316 |
| 2022 | 2,626.4 | 53.3% | 10,289 |
| 2023 | 1,943.8 | 39.4% | 10,647 |
| 2024 | 2,289.6 | 46.3% | 10,756 |
| 2025 | 2,064.2 | 41.9% | 10,675 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusListed in EIA-860, no liquid burn in 36 months
Liquid fuel burned · 36 mo0 MMBtu
Last month with liquid burn—
Switch while operating—
Net summer MW on gas—
Net summer MW on oil—
Time gas → oil—
Time oil → gas—
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | GT | 57 | 52 | Jun 1983 | Operating | — | coming soon |
| GT2 | Natural Gas Fired Combustion Turbine | GT | 52 | 52 | Jun 1983 | Operating | — | coming soon |
| ST1 | Conventional Steam Coal | ST | 194 | 184 | Jun 1976 | Operating | — | coming soon |
| ST2 | Conventional Steam Coal | ST | 300 | 275 | Jan 2011 | Operating | — | coming soon |
| 2 | — | ST | 51.6 | 44 | Jun 1983 | not_current | — | coming soon |
Owner / operator
Operator: City Utilities of Springfield - (MO). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City Utilities of Springfield - (MO) | 100.0% | 603 MW |
Nearby plants
Within 80 km.
| Cox Battery Energy Storage | retired | 5.9 km |
| James River Power Station | 198 MW | 12.2 km |
| Nixa Solar, LLC | 8 MW | 12.8 km |
| Blackman Battery Energy Storage System | — | 14.7 km |
| McCartney | 118 MW | 22 km |
| Springfield Solar 1 LLC | 5 MW | 22.3 km |