Rock River

Brownfield

Beloit, Rock, Wisconsin · Wisconsin Power & Light Co

Legacy capacity
319
MW

Rock River is a natural gas plant in Beloit, Rock, Wisconsin, retired 2020-06-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 319 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 usenatural gas plant
Site typeretired_plant
Existing capacity319 MW
Retirement date2020-06-01
EIA plant ID#4057

Grid hookup & remediation

Nearest substation0.1 mi
OperatorWisconsin Power & Light Co
Operator address827 W. B-R Townline Rd, Beloit, WI, 53511
Why this site is datacenter-attractive: a natural gas 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 Rock River, ranked by DC Readiness.

Candidate sites near Rock River
SiteTypeStateCountyVoltageCapacityQueue waitScore
CHERRY VALLEYSubstation-AdjacentILBoone County345 kV600 MW2.2 yrs74.9
TAP137908Substation-AdjacentILBoone County345 kV600 MW2.2 yrs73.4
KITTYHAWKSubstation-AdjacentWIRock County345 kV600 MW1.4 yrs72.9
TAP137909Substation-AdjacentILWinnebago County345 kV600 MW2.2 yrs71.9
WEMPLETOWNSubstation-AdjacentILWinnebago County345 kV600 MW2.2 yrs71.7
TAP137873Substation-AdjacentILWinnebago County345 kV600 MW2.2 yrs71.6
TAP136941Substation-AdjacentILWinnebago County345 kV600 MW2.2 yrs71.6
PADDOCKSubstation-AdjacentWIRock County345 kV600 MW1.4 yrs71.5

Nearby internet exchanges

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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 Rock River, Beloit, Rock, Wisconsin. 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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