Greenfield (MANDAN JUNCTION - TAP135296)
GreenfieldMercer County, North Dakota · SPP
At a glance
Greenfield (MANDAN JUNCTION - TAP135296) is a greenfield datacenter candidate site in Mercer County, North Dakota, scoring 52.5/100 DC Readiness — 33rd of 34 scored sites in the county. Its nearest substation is MANDAN JUNCTION. It sits in the SPP grid region and the MONTANA-DAKOTA UTILITIES 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
Cheap power, land, and cold climate; DC-friendly.
Incentive detail: Property tax exemption for new DC construction for up to 5 years.
Site location
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How does Greenfield (MANDAN JUNCTION - TAP135296) compare with other sites in Mercer County?
Greenfield (MANDAN JUNCTION - TAP135296) ranks 33rd of 34 scored candidate sites in Mercer County. Its 52.5/100 is about 11% below the county average of 58.7. It is roughly in line with the North Dakota average of 55.7 and roughly in line with the national average of 53.2.
Against the North Dakota average, its strongest sub-score is speed to power (53 vs 51) and its weakest is power availability (28 vs 43). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (MANDAN JUNCTION - TAP135296) to power, fiber and other datacenters?
The nearest mapped substation, MANDAN JUNCTION, is the closest grid connection point on record and operates at 115 kV. The nearest located transmission bottleneck is TMP636_WARD_BISMARK_230_kV_FLO_CENTER_SQUAREBUTT (MISO), 73 miles away. For connectivity, the nearest internet exchange facility is DCN Dakota Carrier Networks Bismarck at 46.6 miles. 2 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is DCN Dakota Carrier Networks Bismarck, 46.6 miles away.
What are the flood, water and hazard risks at Greenfield (MANDAN JUNCTION - TAP135296)?
At the county level, FEMA's National Risk Index rates Mercer 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 Mercer County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN135287 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.5 |
| UNKNOWN133835 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.5 |
| UNKNOWN134171 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.5 |
| COYOTE | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 65.5 |
| UNKNOWN160922 | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 62.8 |
| EC Near Stanton | Greenfield | — | — | 4.3 yrs | 61.5 |
| EC Near Stanton | Greenfield | — | — | 4.3 yrs | 61.2 |
| EC Near Stanton | Greenfield | — | — | 4.3 yrs | 61.1 |
Greenfield (MANDAN JUNCTION - TAP135296): common questions
What is the DC Readiness score of Greenfield (MANDAN JUNCTION - TAP135296)?
Greenfield (MANDAN JUNCTION - TAP135296) scores 52.5/100 on the GridCensus DC Readiness scale, rated fair. It ranks 33rd of 34 scored sites in Mercer County. The Mercer County average is 58.7 and the North Dakota average is 55.7.
What is the nearest substation to Greenfield (MANDAN JUNCTION - TAP135296)?
The nearest mapped substation is MANDAN JUNCTION, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves Greenfield (MANDAN JUNCTION - TAP135296)?
MONTANA-DAKOTA UTILITIES CO (investor owned) holds the retail service territory that contains the site; its holding company is MDU RESOURCES GROUP INC.
What grid region is Greenfield (MANDAN JUNCTION - TAP135296) in?
Greenfield (MANDAN JUNCTION - TAP135296) is in the SPP region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Greenfield (MANDAN JUNCTION - TAP135296) from an internet exchange?
The nearest internet exchange facility is DCN Dakota Carrier Networks Bismarck, about 46.6 miles away; 2 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, “Greenfield (MANDAN JUNCTION - TAP135296), Mercer County, ND”, https://gridcensus.com/datacenter-sites/north-dakota/mercer-county/greenfield-mandan-junction-tap135296-86ee0cc1 (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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