Dubuque
BrownfieldDubuque, Dubuque, Iowa · Interstate Power and Light Co
Dubuque is a natural gas plant in Dubuque, Dubuque, Iowa, retired 2017-06-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 85 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 Dubuque, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 1.4 yrs | 64.3 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 1.4 yrs | 64.1 |
| SALEM | Substation-Adjacent | IA | Dubuque County | 345 kV | 600 MW | 2.8 yrs | 63.6 |
| EC Near Dubuque | Greenfield | IA | Dubuque | — | — | 1.4 yrs | 63.5 |
| UNKNOWN131373 | Substation-Adjacent | IA | Jackson County | 345 kV | 600 MW | 2.8 yrs | 62.6 |
| EC Coal Jo Daviess County | Greenfield | IL | Jo Daviess County | — | — | 4.6 yrs | 62.2 |
| EC Coal Grant County | Greenfield | WI | Grant County | — | — | 1.4 yrs | 61.9 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 1.4 yrs | 61.8 |
Nearby internet exchanges
- USSHCMonticello, IA · 1 networks
See all datacenter sites in Iowa →
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 Dubuque, Dubuque, Dubuque, Iowa. 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.