Dallman
Coal power plant in Sangamon County, Illinois. 230.1 MW of nameplate capacity across 1 generator, operated by City of Springfield - (IL).
Also known as Dallman Power Station · EIA plant 963
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Key facts
- Capacity
- 230.1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- May 2009First generator online
- Operator
- City of Springfield - (IL)EIA operator ID 17828
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Sangamon County, IL39.7548, −89.6024
- EIA plant ID
- 963EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Dallman produces
Free · EIA-923Net generation, 2025
901 GWh
900,919 MWh, final
Capacity factor, 2025
44.7%
2024: Not reported
January to July 2026
424 GWh
Provisional
Range, 2015 to 2025
0.5–2.4
TWh a year. Low 2024, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,736,718 | Not reported | 12 of 12 |
| 2001 | 1,868,481 | Not reported | 12 of 12 |
| 2002 | 1,796,111 | Not reported | 12 of 12 |
| 2003 | 1,757,009 | Not reported | 12 of 12 |
| 2004 | 1,934,637 | Not reported | 12 of 12 |
| 2005 | 2,084,104 | Not reported | 12 of 12 |
| 2006 | 1,782,540 | Not reported | 12 of 12 |
| 2007 | 1,759,577 | Not reported | 12 of 12 |
| 2008 | 1,439,185 | Not reported | 12 of 12 |
| 2009 | 1,835,615 | Not reported | 12 of 12 |
| 2010 | 2,551,998 | 43.6% | 12 of 12 |
| 2011 | 2,267,394 | 38.8% | 12 of 12 |
| 2012 | 1,953,684 | 33.3% | 12 of 12 |
| 2013 | 2,378,304 | Not reported | 12 of 12 |
| 2014 | 2,346,721 | 43.4% | 12 of 12 |
| 2015 | 1,928,627 | 35.6% | 12 of 12 |
| 2016 | 1,785,396 | 32.9% | 12 of 12 |
| 2017 | 2,388,185 | 44.1% | 12 of 12 |
| 2018 | 2,355,829 | 43.5% | 12 of 12 |
| 2019 | 222,857 | 48.5% | 1 of 12 |
| 2020 | 755,921 | Not reported | 12 of 12 |
| 2021 | 1,225,024 | 32.0% | 12 of 12 |
| 2022 | 1,250,278 | 32.6% | 12 of 12 |
| 2023 | 643,132 | 16.8% | 12 of 12 |
| 2024 | 547,210 | Not reported | 12 of 12 |
| 2025 | 900,919 | 44.7% | 12 of 12 |
| 2026 (provisional, partial year) | 423,776 | 36.2% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDCO₂, 2025
1.12M
US short tons. 2024: Not reported
SO₂, 2025
325
US short tons
NOx, 2025
400
US short tons
CO₂ per MWh, calculated
1.24 t
About 2,482 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (31, 32, 33, 4), matched to EIA plant 963 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
484
million gallons
Consumption, 2024
28
million gallons
Source
Municipal
Surface, Fresh. Induced-draft tower
Watershed stress
Low · 0.298
USGS SUI, HUC12 Lake Springfield-Sugar Creek
11 of 15 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 4 | Conventional Steam Coal | 230.1 | May 2009 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of Springfield - (IL) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Dallman
More plants operated by City of Springfield - (IL)
Questions about Dallman
How much power does Dallman produce?
Dallman reported 900,919 MWh (901 GWh) of net generation in 2025, a 44.7% capacity factor on 230.1 MW of nameplate capacity. From January to July 2026 it reported 424 GWh, which is provisional.
Where is Dallman?
Dallman is in Sangamon County, Illinois, at 39.7548, −89.6024. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Dallman?
EIA-860M for August 2026 lists City of Springfield - (IL) as the operator (EIA operator ID 17828). The operator is not always the owner.
When did Dallman start operating?
Its first generator began operating in May 2009, according to EIA-860M.
Does InfraMap have power prices for Dallman?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Dallman, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page