Former Mine site at 43.833, -106.667
Former MineJohnson County, Wyoming · SPP
At a glance
Former Mine site at 43.833, -106.667 is a former mine datacenter candidate site in Johnson County, Wyoming, scoring 44.9/100 DC Readiness — 33rd of 33 scored sites in the county. It sits in the SPP grid region and the POWDER RIVER ENERGY 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
Low-cost power and land; DC-friendly posture.
Incentive detail: No state corporate or personal income tax; low property taxes.
Site location
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How does Former Mine site at 43.833, -106.667 compare with other sites in Johnson County?
Former Mine site at 43.833, -106.667 ranks 33rd of 33 scored candidate sites in Johnson County. Its 44.9/100 is about 13% below the county average of 51.4. It is about 14% below the Wyoming average of 52.2 and about 16% below the national average of 53.2.
Against the Wyoming average, its strongest sub-score is speed to power (55 vs 52) and its weakest is fiber connectivity (15 vs 58). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Former Mine site at 43.833, -106.667 to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is ACT Buffalo at 36 miles. 5 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is ACT Buffalo, 36 miles away.
What are the flood, water and hazard risks at Former Mine site at 43.833, -106.667?
At the county level, FEMA's National Risk Index rates Johnson County "Very 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 Johnson County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| BUFFALO | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 63.3 |
| TAP204319 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 56.1 |
| UNKNOWN209311 | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 55.1 |
| KAYCEE | Substation-Adjacent | 230 kV | 300 MW | 4.3 yrs | 55.0 |
| EC Coal Johnson County | Greenfield | — | — | 4.3 yrs | 54.7 |
| UNKNOWN204284 | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 53.8 |
| UNKNOWN204282 | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 53.8 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 53.1 |
Former Mine site at 43.833, -106.667: common questions
What is the DC Readiness score of Former Mine site at 43.833, -106.667?
Former Mine site at 43.833, -106.667 scores 44.9/100 on the GridCensus DC Readiness scale, rated fair. It ranks 33rd of 33 scored sites in Johnson County. The Johnson County average is 51.4 and the Wyoming average is 52.2.
Which electric utility serves Former Mine site at 43.833, -106.667?
POWDER RIVER ENERGY CORP (cooperative) holds the retail service territory that contains the site.
What grid region is Former Mine site at 43.833, -106.667 in?
Former Mine site at 43.833, -106.667 is in the SPP region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Former Mine site at 43.833, -106.667 from an internet exchange?
The nearest internet exchange facility is ACT Buffalo, about 36 miles away; 5 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, “Former Mine site at 43.833, -106.667, Johnson County, WY”, https://gridcensus.com/datacenter-sites/wyoming/johnson-county/mine-site-b81e1e37 (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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