EC Coal Marathon County
GreenfieldMarathon County, Wisconsin · MISO
At a glance
EC Coal Marathon County is a greenfield datacenter candidate site in Marathon County, Wisconsin, scoring 52.5/100 DC Readiness — 54th of 100 scored sites in the county. It sits in the MISO grid region and the WISCONSIN PUBLIC SERVICE CORP service territory, where interconnection has averaged 4.3 years from request to operation.
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 EC Coal Marathon County compare with other sites in Marathon County?
EC Coal Marathon County ranks 54th of 100 scored candidate sites in Marathon County. Its 52.5/100 is roughly in line with the county average of 53.9. It is roughly in line with the Wisconsin average of 55.4 and roughly in line with the national average of 53.2.
Against the Wisconsin average, its strongest sub-score is water (94 vs 94) and its weakest is fiber connectivity (24 vs 67). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is EC Coal Marathon County to power, fiber and other datacenters?
The nearest located transmission bottleneck is NSPALW02_NORTHPRT_NORTHWILMA11_1_1 (MISO), 24 miles away. For connectivity, the nearest internet exchange facility is 901 Commerce Dr at 33.6 miles. 10 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is 901 Commerce Dr, 33.6 miles away.
What are the flood, water and hazard risks at EC Coal Marathon County?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk). WRI rates baseline water stress at 0.30 on a 0–5 scale. No mapped wetlands are recorded on the parcel. A Superfund site is nearby (EVEREST D C SR HIGH SCHOOL). At the county level, FEMA's National Risk Index rates Marathon County "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 Marathon County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN133208 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 67.2 |
| GARDNER PARK | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.4 |
| EC Near Weston | Greenfield | — | — | 4.3 yrs | 61.5 |
| STRATFORD | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 60.7 |
| EC Near Domtar Paper Company Rothschild | Greenfield | — | — | 4.3 yrs | 60.5 |
| EC Near Weston | Greenfield | — | — | 4.3 yrs | 60.0 |
| EC Near Weston | Greenfield | — | — | 4.3 yrs | 59.4 |
| UNKNOWN171986 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 58.9 |
EC Coal Marathon County: common questions
What is the DC Readiness score of EC Coal Marathon County?
EC Coal Marathon County scores 52.5/100 on the GridCensus DC Readiness scale, rated fair. It ranks 54th of 100 scored sites in Marathon County. The Marathon County average is 53.9 and the Wisconsin average is 55.4.
Which electric utility serves EC Coal Marathon County?
WISCONSIN PUBLIC SERVICE CORP (investor owned) holds the retail service territory that contains the site; its holding company is INTEGRYS ENERGY GROUP.
What grid region is EC Coal Marathon County in?
EC Coal Marathon County is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
Is EC Coal Marathon County in a flood zone?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk).
Who owns EC Coal Marathon County?
Parcel records list the owner as Robert Lee Metz Andsuzanne Jane (private land).
How far is EC Coal Marathon County from an internet exchange?
The nearest internet exchange facility is 901 Commerce Dr, about 33.6 miles away; 10 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, “EC Coal Marathon County, Marathon County, WI”, https://gridcensus.com/datacenter-sites/wisconsin/marathon-county/ec-coal-marathon-county-d96520ee (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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