Greenfield (TOMPKINS - ARGENTA)
GreenfieldCalhoun County, Michigan · MISO
At a glance
Greenfield (TOMPKINS - ARGENTA) is a greenfield datacenter candidate site in Calhoun County, Michigan, scoring 58.9/100 DC Readiness — 18th of 174 scored sites in the county. Its nearest substation is TOMPKINS. It sits in the MISO grid region and the CONSUMERS ENERGY CO service territory, where interconnection has averaged 2.2 years from request to operation. GridCensus catalogs 600 MW of candidate capacity here.
Power & interconnection
Speed to power
Shorter queues and healthier completion here — a faster path to energization than the national norm.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Personal property tax exemption for eligible DC equipment; MEGA tax credits.
Site location
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How does Greenfield (TOMPKINS - ARGENTA) compare with other sites in Calhoun County?
Greenfield (TOMPKINS - ARGENTA) ranks 18th of 174 scored candidate sites in Calhoun County. Its 58.9/100 is roughly in line with the county average of 54.2. It is roughly in line with the Michigan average of 55.2 and about 11% above the national average of 53.2.
Against the Michigan average, its strongest sub-score is power availability (59 vs 34) and its weakest is fiber connectivity (60 vs 68). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Greenfield (TOMPKINS - ARGENTA) to power, fiber and other datacenters?
The nearest mapped substation, TOMPKINS, is the closest grid connection point on record and operates at 345 kV. For connectivity, the nearest internet exchange facility is Liquid Web DC3 at 29.2 miles. 12 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Liquid Web, Inc, 29.2 miles away.
What are the flood, water and hazard risks at Greenfield (TOMPKINS - ARGENTA)?
At the county level, FEMA's National Risk Index rates Calhoun County "Relatively Moderate".
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 Calhoun County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| BATTLE CREEK | Substation-Adjacent | 345 kV | 600 MW | 2.2 yrs | 65.4 |
| EC Near Battle Creek Mill | Greenfield | — | — | 2.2 yrs | 61.9 |
| OZ Calhoun | Greenfield | — | — | 2.2 yrs | 61.5 |
| EC Near Battle Creek Mill | Greenfield | — | — | 2.2 yrs | 61.2 |
| EC Near Battle Creek Mill | Greenfield | — | — | 2.2 yrs | 61.1 |
| EC Near Battle Creek Mill | Greenfield | — | — | 2.2 yrs | 60.8 |
| UNKNOWN157319 | Substation-Adjacent | 138 kV | 100 MW | 2.2 yrs | 60.1 |
| UNKNOWN129936 | Substation-Adjacent | 138 kV | 100 MW | 2.2 yrs | 59.9 |
Greenfield (TOMPKINS - ARGENTA): common questions
What is the DC Readiness score of Greenfield (TOMPKINS - ARGENTA)?
Greenfield (TOMPKINS - ARGENTA) scores 58.9/100 on the GridCensus DC Readiness scale, rated good. It ranks 18th of 174 scored sites in Calhoun County. The Calhoun County average is 54.2 and the Michigan average is 55.2.
What is the nearest substation to Greenfield (TOMPKINS - ARGENTA)?
The nearest mapped substation is TOMPKINS, at 345 kV. GridCensus catalogs 600 MW of candidate capacity for the site.
Which electric utility serves Greenfield (TOMPKINS - ARGENTA)?
CONSUMERS ENERGY CO (investor owned) holds the retail service territory that contains the site; its holding company is CMS ENERGY CORPORATION.
What grid region is Greenfield (TOMPKINS - ARGENTA) in?
Greenfield (TOMPKINS - ARGENTA) is in the MISO region. Projects interconnecting there have averaged a 2.2-year wait from queue request to operation.
How far is Greenfield (TOMPKINS - ARGENTA) from an internet exchange?
The nearest internet exchange facility is Liquid Web DC3, about 29.2 miles away; 12 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 (TOMPKINS - ARGENTA), Calhoun County, MI”, https://gridcensus.com/datacenter-sites/michigan/calhoun-county/greenfield-tompkins-argenta-8a1b1d19 (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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