EC Coal Coconino County
GreenfieldCoconino County, Arizona · WECC
At a glance
EC Coal Coconino County is a greenfield datacenter candidate site in Coconino County, Arizona, scoring 51.2/100 DC Readiness — 11th of 125 scored sites in the county. It sits in the WECC grid region and the NAVAJO TRIBAL UTILITY AUTHORITY 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 EC Coal Coconino County compare with other sites in Coconino County?
EC Coal Coconino County ranks 11th of 125 scored candidate sites in Coconino County. Its 51.2/100 is about 13% above the county average of 45.3. It is roughly in line with 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 water (39 vs 17) and its weakest is fiber connectivity (46 vs 66). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is EC Coal Coconino County to power, fiber and other datacenters?
For connectivity, the nearest internet exchange facility is Tonaquint Data Center - Saint George at 131.7 miles. 5 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Lumen, 128 miles away.
What are the flood, water and hazard risks at EC Coal Coconino County?
The site is in FEMA flood zone D, where flood risk has not been determined. WRI rates baseline water stress at 4.20 on a 0–5 scale. No mapped wetlands are recorded on the parcel. At the county level, FEMA's National Risk Index rates Coconino 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 Coconino County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| CEDAR MOUNTAIN | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 58.4 |
| FLAGSTAFF | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 56.0 |
| COCONINO | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 54.1 |
| MOENKOPI | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 53.7 |
| OZ Coconino | Greenfield | — | — | 3.5 yrs | 52.4 |
| OZ Coconino | Greenfield | — | — | 3.5 yrs | 51.6 |
| EC Near IRC Generator Facility | Greenfield | — | — | 3.5 yrs | 51.4 |
| EC Near IRC Generator Facility | Greenfield | — | — | 3.5 yrs | 51.3 |
EC Coal Coconino County: common questions
What is the DC Readiness score of EC Coal Coconino County?
EC Coal Coconino County scores 51.2/100 on the GridCensus DC Readiness scale, rated fair. It ranks 11th of 125 scored sites in Coconino County. The Coconino County average is 45.3 and the Arizona average is 48.5.
Which electric utility serves EC Coal Coconino County?
NAVAJO TRIBAL UTILITY AUTHORITY (state) holds the retail service territory that contains the site.
What grid region is EC Coal Coconino County in?
EC Coal Coconino County is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
Is EC Coal Coconino County in a flood zone?
The site is in FEMA flood zone D, where flood risk has not been determined.
Who owns EC Coal Coconino County?
Parcel records list the owner as NAVAJO TRIBAL UTILITY AUTHORITY (private land).
How far is EC Coal Coconino County from an internet exchange?
The nearest internet exchange facility is Tonaquint Data Center - Saint George, about 131.7 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, “EC Coal Coconino County, Coconino County, AZ”, https://gridcensus.com/datacenter-sites/arizona/coconino-county/ec-coal-coconino-county-3a8a0da8 (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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