TURTLE
Substation-AdjacentRock, Wisconsin · MISO
At a glance
TURTLE is a substation-adjacent datacenter candidate site in Rock, Wisconsin, scoring 58.6/100 DC Readiness — 30th of 100 scored sites in the county. Its nearest substation is TURTLE (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
Site characteristics
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 TURTLE compare with other sites in Rock?
TURTLE ranks 30th of 100 scored candidate sites in Rock. Its 58.6/100 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 10% 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 (63 vs 67). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is TURTLE to power, fiber and other datacenters?
The nearest mapped substation, TURTLE, is about 0 miles away and operates at 138 kV. The nearest located transmission bottleneck is BASE_SUNRISE_4434_44 (MISO), 7 miles away. For connectivity, the nearest internet exchange facility is EdgeConneX Madison (EDCMAD01) at 35.8 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Central Office, 22.4 miles away.
What are the flood, water and hazard risks at TURTLE?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk). 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 Rock River | Greenfield | — | — | 4.3 yrs | 60.0 |
| EC Near Sheepskin | Greenfield | — | — | 4.3 yrs | 60.0 |
TURTLE: common questions
What is the DC Readiness score of TURTLE?
TURTLE scores 58.6/100 on the GridCensus DC Readiness scale, rated good. It ranks 30th 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 TURTLE?
The nearest mapped substation is TURTLE, about 0 miles away, at 138 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves TURTLE?
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 TURTLE in?
TURTLE is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
Is TURTLE in a flood zone?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk).
How far is TURTLE from an internet exchange?
The nearest internet exchange facility is EdgeConneX Madison (EDCMAD01), about 35.8 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, “TURTLE, Rock, WI”, https://gridcensus.com/datacenter-sites/wisconsin/rock/turtle-1a83b2cf (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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