WELTON MOHAWK
Substation-AdjacentYuma County, Arizona · WECC
At a glance
WELTON MOHAWK is a substation-adjacent datacenter candidate site in Yuma County, Arizona, scoring 52.3/100 DC Readiness — 10th of 248 scored sites in the county. Its nearest substation is WELTON MOHAWK (0 mi, 161 kV). It sits in the WECC grid region and the WELLTON-MOHAWK IRR & DRAIN DIST service territory, where interconnection has averaged 3.5 years from request to operation. GridCensus catalogs 100 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 WELTON MOHAWK compare with other sites in Yuma County?
WELTON MOHAWK ranks 10th of 248 scored candidate sites in Yuma County. Its 52.3/100 is about 13% above the county average of 46.3. 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 power availability (60 vs 34) and its weakest is water (16 vs 17). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is WELTON MOHAWK to power, fiber and other datacenters?
The nearest mapped substation, WELTON MOHAWK, is about 0 miles away and operates at 161 kV. For connectivity, the nearest internet exchange facility is Stream Data Centers - Phoenix I at 122 miles. 7 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is PHX-10, 121.4 miles away.
What are the flood, water and hazard risks at WELTON MOHAWK?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk). At the county level, FEMA's National Risk Index rates Yuma 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 Yuma County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| HOODOO WASH | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 60.3 |
| NORTH GILA | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 60.1 |
| BLM Solar DLA: Agua Caliente | Greenfield | — | 604 MW | 3.5 yrs | 59.7 |
| OZ Yuma | Greenfield | — | — | 3.5 yrs | 58.4 |
| OZ Yuma | Greenfield | — | — | 3.5 yrs | 57.8 |
| OZ Yuma | Greenfield | — | — | 3.5 yrs | 55.8 |
| OZ Yuma | Greenfield | — | — | 3.5 yrs | 55.5 |
| OZ Yuma | Greenfield | — | — | 3.5 yrs | 53.9 |
WELTON MOHAWK: common questions
What is the DC Readiness score of WELTON MOHAWK?
WELTON MOHAWK scores 52.3/100 on the GridCensus DC Readiness scale, rated fair. It ranks 10th of 248 scored sites in Yuma County. The Yuma County average is 46.3 and the Arizona average is 48.5.
What is the nearest substation to WELTON MOHAWK?
The nearest mapped substation is WELTON MOHAWK, about 0 miles away, at 161 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves WELTON MOHAWK?
WELLTON-MOHAWK IRR & DRAIN DIST (not available) holds the retail service territory that contains the site.
What grid region is WELTON MOHAWK in?
WELTON MOHAWK is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
Is WELTON MOHAWK in a flood zone?
The site is in FEMA flood zone X, outside the Special Flood Hazard Area (minimal or moderate flood risk).
How far is WELTON MOHAWK from an internet exchange?
The nearest internet exchange facility is Stream Data Centers - Phoenix I, about 122 miles away; 7 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, “WELTON MOHAWK, Yuma County, AZ”, https://gridcensus.com/datacenter-sites/arizona/yuma-county/welton-mohawk-0be3c18e (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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