SELLS
SubstationArizona · TRICO ELECTRIC COOPERATIVE
At a glance
SELLS is an electric transmission substation in Arizona, on TRICO ELECTRIC COOPERATIVE's transmission network. It is classified as unclassified and connects 1 transmission line. 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #300243 | 69 kV | TRICO ELECTRIC COOPERATIVE | IN SERVICE | 19.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SELLS, 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 |
|---|---|---|---|---|---|---|---|
| EC FFE Pima County | Greenfield | AZ | Pima County | — | — | 3.5 yrs | 49.7 |
| Pan Tak Gravel Pit | Industrial | AZ | Pima County | — | — | 3.5 yrs | 44.0 |
| Sells UST | Industrial | AZ | Pima County | — | — | 3.5 yrs | 42.3 |
| Natural Resources | Industrial | AZ | Pima County | — | — | 3.5 yrs | 42.2 |
| Health and Human Services | Industrial | AZ | Pima County | — | — | 3.5 yrs | 42.2 |
| Legal Services Bldg | Industrial | AZ | Pima County | — | — | 3.5 yrs | 42.2 |
| O'odham Construction | Industrial | AZ | Pima County | — | — | 3.5 yrs | 42.1 |
| Choulic Gravel Pit | Industrial | AZ | Pima County | — | — | 3.5 yrs | 42.0 |
Who owns the transmission lines at SELLS?
The 1 connected line listed above is owned by TRICO ELECTRIC COOPERATIVE. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 19.5 miles.
How do candidate sites near SELLS score?
The 8 highest-scoring candidate sites within about 25 miles range from 42 to 50 on the 0–100 DC Readiness scale. They fall in Pima 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 SELLS substation?
1 transmission line terminate at or pass through SELLS in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 19.5 miles.
Who owns SELLS substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at SELLS belong to TRICO ELECTRIC COOPERATIVE. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is SELLS substation located?
SELLS is in Arizona at 31.9346, -111.9145. The datacenter candidate sites closest to it are in Pima County.
Are there datacenter candidate sites near SELLS substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of SELLS. The highest-scoring is EC FFE Pima County at 50/100. 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, “SELLS substation, Arizona”, https://gridcensus.com/substations/arizona/sells-6c196a50 (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 SELLS 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.