Grand Tower Energy Center LLC
BrownfieldGrand Tower, Jackson, Illinois · Mainline Generation LLC
Grand Tower Energy Center LLC is a natural gas plant in Grand Tower, Jackson, Illinois, retired 2024-04-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 641 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
Grid hookup & remediation
Nearby datacenter candidate sites
Scored candidate sites near Grand Tower Energy Center LLC, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| TAP153821 | Substation-Adjacent | MO | Bollinger County | 345 kV | 600 MW | 4.6 yrs | 69.4 |
| TAP139473 | Substation-Adjacent | IL | Franklin County | 230 kV | 300 MW | 4.6 yrs | 67.6 |
| UNKNOWN121880 | Substation-Adjacent | IL | Jackson County | 138 kV | 100 MW | 4.6 yrs | 66.6 |
| ST JOHNS | Substation-Adjacent | IL | Perry County | 230 kV | 300 MW | 4.6 yrs | 66.3 |
| TAP153686 | Substation-Adjacent | IL | Union County | 138 kV | 100 MW | 4.6 yrs | 66.0 |
| UNKNOWN122348 | Substation-Adjacent | IL | Randolph County | 161 kV | 100 MW | 4.6 yrs | 65.4 |
| UNKNOWN174145 | Substation-Adjacent | MO | Cape Girardeau County | 161 kV | 100 MW | 4.6 yrs | 65.3 |
| CARBONDALE NW | Substation-Adjacent | IL | Jackson County | 138 kV | 100 MW | 4.6 yrs | 64.8 |
See all datacenter sites in Illinois →
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.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Grand Tower Energy Center LLC, Grand Tower, Jackson, 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.