Nelson Dewey Generating Station
BrownfieldCassville, Grant, Wisconsin · Wisconsin Power & Light Co
Nelson Dewey Generating Station is a coal plant in Cassville, Grant, Wisconsin, retired 2015-12-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 227 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
Site conditions & market — Grant County
County-level intelligence for this site's location — the power economics, water, hazard, connectivity, and workforce a developer screens before ever visiting. Assembled from FEMA NRI, BLS QCEW, FCC BDC, USGS water-use, and EIA.
Market & workforce
Power economics & interconnection
Water & cooling
Hazard, flood & connectivity
County-level context — address-level utility offerings and flood zoning vary within the county. Confirm site-specific service with the utility and a Phase I ESA.
Nearby brownfield & retired-generation sites
A proximity screen of other retired-plant, contaminated, and EPA-flagged sites near Nelson Dewey Generating Station — the environmental neighborhood, ranked by legacy grid capacity.
| Site | Former use | Legacy MW | Distance | Cleanup status |
|---|---|---|---|---|
| Dubuque | natural gas plant | 85 | 23.4 mi | — |
| John Deere Dubuque Works | coal plant | 14 | 19.1 mi | — |
| West Dubuque Solar Garden | former manufacturing site | 4 | 21.7 mi | cleanup_complete |
| Hopkinton | oil plant | 3 | 28.9 mi | — |
| Downtown Dubuque Solar Garden | former manufacturing site | 1 | 21.7 mi | cleanup_complete |
Derived from GridCensus's retired-generator & EPA brownfield dataset. Not a substitute for an ASTM E1527 Phase I environmental radius report.
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Nearby datacenter candidate sites
Scored candidate sites near Nelson Dewey Generating Station, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| SALEM | Substation-Adjacent | IA | Dubuque County | 345 kV | 600 MW | 2.8 yrs | 64.5 |
| EC Near Hopkinton | Greenfield | IA | Delaware | — | — | 1.4 yrs | 63.9 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 1.4 yrs | 62.8 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 1.4 yrs | 62.6 |
| EC Near Hopkinton | Greenfield | IA | Delaware | — | — | 1.4 yrs | 62.5 |
| EC Near Hopkinton | Greenfield | IA | Delaware | — | — | 1.4 yrs | 62.4 |
| EC Near Hopkinton | Greenfield | IA | Delaware | — | — | 1.4 yrs | 62.0 |
| OZ Crawford | Greenfield | WI | Crawford | — | — | 1.4 yrs | 61.9 |
Nearby internet exchanges
- USSHCMonticello, IA · 1 networks
See all datacenter sites in Wisconsin →
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 Nelson Dewey Generating Station, Cassville, Grant, Wisconsin. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.