Dallman

Brownfield

Springfield, Sangamon, Illinois · City of Springfield - (IL)

Legacy capacity
388
MW

Dallman is a coal plant in Springfield, Sangamon, Illinois, retired 2024-03-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 388 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.

Former use & capacity

Former usecoal plant
Site typeretired_plant
Existing capacity388 MW
Retirement date2024-03-01
EIA plant ID#963

Grid hookup & remediation

Nearest substation0.1 mi
OperatorCity of Springfield - (IL)
Operator address3100 Stevenson Drive, Springfield, IL, 62703
Why this site is datacenter-attractive: a coal plant of this scale leaves behind a high-capacity grid interconnection that a new load can re-use, frequently shaving years off the interconnection queue. Retired-plant sites also tend to be already zoned for heavy industrial use with established road, rail, and water infrastructure.

Nearby datacenter candidate sites

Scored candidate sites near Dallman, ranked by DC Readiness.

Candidate sites near Dallman
SiteTypeStateCountyVoltageCapacityQueue waitScore
AUSTINSubstation-AdjacentILSangamon County345 kV600 MW4.6 yrs69.6
KINCAID STATIONSubstation-AdjacentILChristian County345 kV600 MW4.6 yrs69.4
PAWNEESubstation-AdjacentILSangamon County345 kV600 MW4.6 yrs69.2
TAP138261Substation-AdjacentILMacon County345 kV600 MW4.6 yrs68.4
UNKNOWN122516Substation-AdjacentILChristian County138 kV100 MW4.6 yrs66.9
LakesideBrownfieldILSangamon—75 MW—66.3
UNKNOWN123103Substation-AdjacentILLogan County138 kV100 MW4.6 yrs66.2
TAP139416Substation-AdjacentILSangamon County138 kV100 MW4.6 yrs65.9

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Dataset updated . Screening estimates derived from public data sources.

Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.

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This page shows a public slice of the GridCensus dataset for Dallman, Springfield, Sangamon, Illinois. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.

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