32nd largest plant in Illinois · 806th nationally
Dallman is a coal power plant in Illinois with a nameplate capacity of 437 MW. It generates roughly 643.1k MWh per year — enough to power about 61,250 average U.S. homes.
Its capacity factor of 17% reflects intermittent or peaking operation. At 2551 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (437 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Dallman |
|---|---|
| Operator | City Of Springfield - (Il) |
| City | Springfield |
| County | Sangamon County |
| State | Illinois |
| ZIP | 62703 |
| Coordinates | 39.75480, -89.60239 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 4 | Conventional Steam Coal | Bituminous Coal | 230 MW | Operating | 2009 |
| 3 | Conventional Steam Coal | Bituminous Coal | 207 MW | Retired | 1978 |
| 1 | Conventional Steam Coal | Bituminous Coal | 90.2 MW | Retired | 1968 |
| 2 | Conventional Steam Coal | Bituminous Coal | 90.2 MW | Retired | 1972 |
| CO₂ | 820.3k metric tons |
|---|---|
| SO₂ | 265 metric tons |
| NOₓ | 287 metric tons |
| CO₂ Rate | 2551 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | SERC |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
Coal plants burn pulverized coal to boil water and spin steam turbines. They emit substantial CO₂, SO₂, and NOₓ along with mercury and particulate matter. Modern units include scrubbers and selective catalytic reduction; older units are increasingly being retired or converted to natural gas as economics shift.