Former Mine site at 31.534, -110.723
Former MineSanta Cruz County, Arizona · WECC
At a glance
Former Mine site at 31.534, -110.723 is a former mine datacenter candidate site in Santa Cruz County, Arizona, scoring 44.5/100 DC Readiness — 70th of 72 scored sites in the county. It sits in the WECC grid region and the SULPHUR SPRINGS VALLEY E C INC service territory, where interconnection has averaged 3.5 years from request to operation.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
Sales-tax exemption suspended Jul 2026–Jun 2029; water constraints add scrutiny.
Incentive detail: Government Property Lease Excise Tax (GPLET) for qualified facilities on government land.
Site location
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How does Former Mine site at 31.534, -110.723 compare with other sites in Santa Cruz County?
Former Mine site at 31.534, -110.723 ranks 70th of 72 scored candidate sites in Santa Cruz County. Its 44.5/100 is about 14% below the county average of 51.6. It is roughly in line with the Arizona average of 48.5 and about 16% below the national average of 53.2.
Against the Arizona average, its strongest sub-score is speed to power (51 vs 51) and its weakest is fiber connectivity (52 vs 66). 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 31.534, -110.723 to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is MDC Nogales at 18.9 miles. 4 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is MDC Nogales, 18.9 miles away.
What are the flood, water and hazard risks at Former Mine site at 31.534, -110.723?
The site is in FEMA flood zone A, a Special Flood Hazard Area — land with at least a 1% annual chance of flooding. At the county level, FEMA's National Risk Index rates Santa Cruz 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 Santa Cruz County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| IRVINGTON | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 61.7 |
| VAIL | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 61.0 |
| SOUTH | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 60.2 |
| BICKNELL | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 58.7 |
| SAHUARITA | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 58.0 |
| OZ Santa Cruz | Greenfield | — | — | 3.5 yrs | 57.8 |
| UNKNOWN301866 | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 57.4 |
| PANTANO | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 56.8 |
Former Mine site at 31.534, -110.723: common questions
What is the DC Readiness score of Former Mine site at 31.534, -110.723?
Former Mine site at 31.534, -110.723 scores 44.5/100 on the GridCensus DC Readiness scale, rated fair. It ranks 70th of 72 scored sites in Santa Cruz County. The Santa Cruz County average is 51.6 and the Arizona average is 48.5.
Which electric utility serves Former Mine site at 31.534, -110.723?
SULPHUR SPRINGS VALLEY E C INC (cooperative) holds the retail service territory that contains the site; its holding company is SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE.
What grid region is Former Mine site at 31.534, -110.723 in?
Former Mine site at 31.534, -110.723 is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
Is Former Mine site at 31.534, -110.723 in a flood zone?
The site is in FEMA flood zone A, a Special Flood Hazard Area — land with at least a 1% annual chance of flooding.
How far is Former Mine site at 31.534, -110.723 from an internet exchange?
The nearest internet exchange facility is MDC Nogales, about 18.9 miles away; 4 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 31.534, -110.723, Santa Cruz County, AZ”, https://gridcensus.com/datacenter-sites/arizona/santa-cruz-county/mine-site-04d1ab34 (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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Every site and score for Former Mine site at 31.534, -110.723, Santa Cruz County is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.