OZ Portage
GreenfieldPortage County, Wisconsin · MISO
At a glance
OZ Portage is a greenfield datacenter candidate site in Portage County, Wisconsin, scoring 50.6/100 DC Readiness — 72nd of 74 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 OZ Portage compare with other sites in Portage County?
OZ Portage ranks 72nd of 74 scored candidate sites in Portage County. Its 50.6/100 is roughly in line with the county average of 53.7. 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 speed to power (48 vs 48) and its weakest is fiber connectivity (32 vs 67). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is OZ Portage to power, fiber and other datacenters?
The nearest located transmission bottleneck is NSPALW02_NORTHPRT_NORTHWILMA11_1_1 (MISO), 2 miles away. For connectivity, the nearest internet exchange facility is 901 Commerce Dr at 30.7 miles. 8 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is 901 Commerce Dr, 30.7 miles away.
What are the flood, water and hazard risks at OZ Portage?
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. Mapped wetlands (National Wetlands Inventory) are present on the parcel. A Superfund site is nearby (OLD TOWNE LAUNDRY DRYCLEANING). At the county level, FEMA's National Risk Index rates Portage 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 Portage County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| ROCKY RUN | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.6 |
| OZ Portage | Greenfield | — | — | 4.3 yrs | 62.4 |
| UNKNOWN132911 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.4 |
| NORTHPOINT | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.3 |
| PLOVER | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.3 |
| UNKNOWN157838 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.3 |
| CWEC DEWEY | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 59.2 |
| HOOVER | Substation-Adjacent | 138 kV | 100 MW | 4.3 yrs | 58.8 |
OZ Portage: common questions
What is the DC Readiness score of OZ Portage?
OZ Portage scores 50.6/100 on the GridCensus DC Readiness scale, rated fair. It ranks 72nd of 74 scored sites in Portage County. The Portage County average is 53.7 and the Wisconsin average is 55.4.
Which electric utility serves OZ Portage?
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 OZ Portage in?
OZ Portage is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
Is OZ Portage 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 OZ Portage?
Parcel records list the owner as Uw Board Of Regents (private land).
How far is OZ Portage from an internet exchange?
The nearest internet exchange facility is 901 Commerce Dr, about 30.7 miles away; 8 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, “OZ Portage, Portage County, WI”, https://gridcensus.com/datacenter-sites/wisconsin/portage-county/oz-portage-0fd03b88 (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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