JANESVILLE GENERAL
Substation-AdjacentRock, Wisconsin · MISO
At a glance
JANESVILLE GENERAL is a substation-adjacent datacenter candidate site in Rock, Wisconsin, scoring 59.0/100 DC Readiness — 21st of 100 scored sites in the county. Its nearest substation is JANESVILLE GENERAL (0 mi, 138 kV). It sits in the MISO grid region and the WISCONSIN POWER & LIGHT CO service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Enterprise Zone tax credits; TIF available for DC construction in eligible areas.
Site location
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How does JANESVILLE GENERAL compare with other sites in Rock?
JANESVILLE GENERAL ranks 21st of 100 scored candidate sites in Rock. Its 59.0/100 is roughly in line with the county average of 56.5. It is roughly in line with the Wisconsin average of 55.4 and about 11% above the national average of 53.2.
Against the Wisconsin average, its strongest sub-score is power availability (58 vs 38) and its weakest is fiber connectivity (66 vs 67). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is JANESVILLE GENERAL to power, fiber and other datacenters?
The nearest mapped substation, JANESVILLE GENERAL, is about 0 miles away and operates at 138 kV. The nearest located transmission bottleneck is BASE_SUNRISE_4434_44 (MISO), 3 miles away. For connectivity, the nearest internet exchange facility is EdgeConneX Madison (EDCMAD01) at 29.7 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Central Office, 18.6 miles away.
What are the flood, water and hazard risks at JANESVILLE GENERAL?
At the county level, FEMA's National Risk Index rates Rock "Relatively Low".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Rock, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| KITTYHAWK | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 64.6 |
| PADDOCK | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 64.4 |
| EC Near Sheepskin | Greenfield | — | — | 4.3 yrs | 62.9 |
| EC Near Sheepskin | Greenfield | — | — | 4.3 yrs | 62.2 |
| ROCK RIVER | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 61.4 |
| EC Near Sheepskin | Greenfield | — | — | 4.3 yrs | 60.7 |
| EC Near Sheepskin | Greenfield | — | — | 4.3 yrs | 60.0 |
| EC Near Rock River | Greenfield | — | — | 4.3 yrs | 60.0 |
JANESVILLE GENERAL: common questions
What is the DC Readiness score of JANESVILLE GENERAL?
JANESVILLE GENERAL scores 59.0/100 on the GridCensus DC Readiness scale, rated good. It ranks 21st of 100 scored sites in Rock. The Rock average is 56.5 and the Wisconsin average is 55.4.
What is the nearest substation to JANESVILLE GENERAL?
The nearest mapped substation is JANESVILLE GENERAL, about 0 miles away, at 138 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves JANESVILLE GENERAL?
WISCONSIN POWER & LIGHT CO (investor owned) holds the retail service territory that contains the site; its holding company is ALLIANT ENERGY CORP.
What grid region is JANESVILLE GENERAL in?
JANESVILLE GENERAL is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is JANESVILLE GENERAL from an internet exchange?
The nearest internet exchange facility is EdgeConneX Madison (EDCMAD01), about 29.7 miles away; 16 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “JANESVILLE GENERAL, Rock, WI”, https://gridcensus.com/datacenter-sites/wisconsin/rock/janesville-general-c200ca53 (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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