TAP308165
SubstationArizona · NAVAJO TRIBAL UTILITY AUTHORITY
At a glance
TAP308165 is an electric transmission substation in Arizona, on NAVAJO TRIBAL UTILITY AUTHORITY's transmission network. It is classified as unclassified and connects 3 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Ownership
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #313677 | 69 kV | NAVAJO TRIBAL UTILITY AUTHORITY | IN SERVICE | 3.6 mi |
| #313680 | 69 kV | NAVAJO TRIBAL UTILITY AUTHORITY | IN SERVICE | 1.9 mi |
| #313682 | 69 kV | NAVAJO TRIBAL UTILITY AUTHORITY | IN SERVICE | 37.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP308165, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| LONGHOUSE VALLEY | Substation-Adjacent | AZ | San Juan County | 230 kV | 300 MW | 3.5 yrs | 56.4 |
| KAYENTA | Substation-Adjacent | AZ | San Juan County | 230 kV | 300 MW | 3.5 yrs | 55.3 |
| OZ San Juan | Greenfield | UT | San Juan | — | — | 3.5 yrs | 53.8 |
| MEXICAN HAT | Substation-Adjacent | UT | San Juan County | 69 kV | 50 MW | 3.5 yrs | 50.3 |
| EC Coal Navajo County | Greenfield | AZ | Navajo County | — | — | 3.5 yrs | 48.4 |
| Mine Site | Former Mine | AZ | Navajo County | — | — | 3.5 yrs | 42.9 |
| Kayenta Health Center/Qtrs | Federal Excess | AZ | Navajo County | — | — | 3.5 yrs | 41.8 |
| Mine Site | Former Mine | AZ | Navajo County | — | — | 3.5 yrs | 40.0 |
Who owns the transmission lines at TAP308165?
The 3 connected lines listed above are owned by NAVAJO TRIBAL UTILITY AUTHORITY. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 42.8 miles.
How do candidate sites near TAP308165 score?
The 8 highest-scoring candidate sites within about 25 miles range from 40 to 56 on the 0–100 DC Readiness scale. They fall in San Juan County, San Juan, Navajo County. The Arizona average across 3,816 scored sites is 48.5. 614 of those Arizona sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP308165 substation?
3 transmission lines terminate at or pass through TAP308165 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 42.8 miles.
Who owns TAP308165 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP308165 belong to NAVAJO TRIBAL UTILITY AUTHORITY. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP308165 substation located?
TAP308165 is in Arizona at 36.7325, -110.2236. The datacenter candidate sites closest to it are in San Juan County, San Juan, Navajo County.
Are there datacenter candidate sites near TAP308165 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP308165. The highest-scoring is LONGHOUSE VALLEY at 56/100. Across Arizona, the average DC Readiness score is 48.5.
More in Arizona
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “TAP308165 substation, Arizona”, https://gridcensus.com/substations/arizona/tap308165-143b533a (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
Every site and score for TAP308165 substation, Arizona 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.