SELIGMAN
Substation-AdjacentYavapai County, Arizona · WECC
At a glance
SELIGMAN is a substation-adjacent datacenter candidate site in Yavapai County, Arizona, scoring 54.2/100 DC Readiness — 4th of 183 scored sites in the county. Its nearest substation is SELIGMAN (0 mi, 230 kV). It sits in the WECC grid region and the ARIZONA PUBLIC SERVICE CO service territory, where interconnection has averaged 3.5 years from request to operation. GridCensus catalogs 300 MW of candidate capacity here.
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 SELIGMAN compare with other sites in Yavapai County?
SELIGMAN ranks 4th of 183 scored candidate sites in Yavapai County. Its 54.2/100 is about 20% above the county average of 45.1. It is about 12% above the Arizona average of 48.5 and roughly in line with the national average of 53.2.
Against the Arizona average, its strongest sub-score is power availability (78 vs 34) and its weakest is fiber connectivity (53 vs 66). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is SELIGMAN to power, fiber and other datacenters?
The nearest mapped substation, SELIGMAN, is about 0 miles away and operates at 230 kV. For connectivity, the nearest internet exchange facility is Flexential - Phoenix (PHX01) at 116.9 miles. 10 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Flexential Phoenix - Deer Valley, 116.9 miles away.
What are the flood, water and hazard risks at SELIGMAN?
At the county level, FEMA's National Risk Index rates Yavapai 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 Yavapai County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| DUGAS | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 59.1 |
| YAVAPAI | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 58.1 |
| WILLOW LAKE | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 54.4 |
| VERDE | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 54.2 |
| OZ Yavapai | Greenfield | — | — | 3.5 yrs | 53.0 |
| OZ Yavapai | Greenfield | — | — | 3.5 yrs | 50.7 |
| UNKNOWN310161 | Substation-Adjacent | 115 kV | 100 MW | 3.5 yrs | 50.0 |
| UNKNOWN302227 | Substation-Adjacent | 69 kV | 50 MW | 3.5 yrs | 48.8 |
SELIGMAN: common questions
What is the DC Readiness score of SELIGMAN?
SELIGMAN scores 54.2/100 on the GridCensus DC Readiness scale, rated fair. It ranks 4th of 183 scored sites in Yavapai County. The Yavapai County average is 45.1 and the Arizona average is 48.5.
What is the nearest substation to SELIGMAN?
The nearest mapped substation is SELIGMAN, about 0 miles away, at 230 kV. GridCensus catalogs 300 MW of candidate capacity for the site.
Which electric utility serves SELIGMAN?
ARIZONA PUBLIC SERVICE CO (investor owned) holds the retail service territory that contains the site; its holding company is ARIZONA PUBLIC SERVICE COMPANY.
What grid region is SELIGMAN in?
SELIGMAN is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
How far is SELIGMAN from an internet exchange?
The nearest internet exchange facility is Flexential - Phoenix (PHX01), about 116.9 miles away; 10 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, “SELIGMAN, Yavapai County, AZ”, https://gridcensus.com/datacenter-sites/arizona/yavapai-county/seligman-3769682a (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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