Substation-Adjacent Datacenter Sites in Arkansas
At a glance
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
Top substation-adjacent sites in Arkansas
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| TONTITOWN | Substation-Adjacent | Benton County | 345 kV | 600 MW | 4.3 yrs | 68.9 |
| MABELVALE SUBSTATION | Substation-Adjacent | Pulaski County | 500 kV | 1,000 MW | 4.3 yrs | 68.6 |
| UNKNOWN117209 | Substation-Adjacent | Hot Spring County | 500 kV | 1,000 MW | 4.3 yrs | 68.1 |
| WRIGHTSVILLE | Substation-Adjacent | Pulaski County | 500 kV | 1,000 MW | 4.3 yrs | 67.5 |
| MAYFLOWER | Substation-Adjacent | Pulaski County | 500 kV | 1,000 MW | 4.3 yrs | 67.5 |
| KEO SUBSTATION | Substation-Adjacent | Lonoke County | 500 kV | 1,000 MW | 4.3 yrs | 67.2 |
| CHAMBERS SPRINGS | Substation-Adjacent | Washington County | 345 kV | 600 MW | 4.3 yrs | 66.3 |
| FORT SMITH | Substation-Adjacent | Sebastian County | 500 kV | 1,000 MW | 4.3 yrs | 65.7 |
| WEST MEMPHIS SUBSTATION | Substation-Adjacent | Crittenden County | 500 kV | 1,000 MW | 4.3 yrs | 65.6 |
| UNKNOWN117348 | Substation-Adjacent | Lonoke County | 500 kV | 1,000 MW | 4.3 yrs | 65.6 |
| WHITE BLUFF | Substation-Adjacent | Jefferson County | 500 kV | 1,000 MW | 4.3 yrs | 65.4 |
| UNKNOWN123543 | Substation-Adjacent | Hempstead County | 345 kV | 600 MW | 4.3 yrs | 65.4 |
| SHERIDAN | Substation-Adjacent | Grant County | 500 kV | 1,000 MW | 4.3 yrs | 64.5 |
| JONESBORO EHV | Substation-Adjacent | Craighead County | 500 kV | 1,000 MW | 4.3 yrs | 64.4 |
| TAP149964 | Substation-Adjacent | Hot Spring County | 500 kV | 1,000 MW | 4.3 yrs | 64.3 |
| UNKNOWN117262 | Substation-Adjacent | Hot Spring County | 500 kV | 1,000 MW | 4.3 yrs | 64.3 |
| ARKANSAS NUCLEAR ONE | Substation-Adjacent | Pope County | 500 kV | 1,000 MW | 4.3 yrs | 63.9 |
| UNKNOWN107928 | Substation-Adjacent | Benton County | 345 kV | 600 MW | 4.3 yrs | 63.9 |
| UNKNOWN107970 | Substation-Adjacent | Columbia County | 500 kV | 1,000 MW | 4.3 yrs | 63.8 |
| UNKNOWN149575 | Substation-Adjacent | Benton County | 345 kV | 600 MW | 4.3 yrs | 63.6 |
| FAYETTEVILLE SOUTH | Substation-Adjacent | Washington County | 161 kV | 100 MW | 4.3 yrs | 63.1 |
| UNKNOWN117339 | Substation-Adjacent | Mississippi County | 500 kV | 1,000 MW | 4.3 yrs | 63.1 |
| INDEPENDENCE SUBSTATION | Substation-Adjacent | Independence County | 500 kV | 1,000 MW | 4.3 yrs | 63.1 |
| SANS SOUCI | Substation-Adjacent | Mississippi County | 500 kV | 1,000 MW | 4.3 yrs | 63.1 |
| FAYETTEVILLE | Substation-Adjacent | Washington County | 161 kV | 100 MW | 4.3 yrs | 63.1 |
How does Arkansas compare with other states for substation-adjacent sites?
With 758 sites, Arkansas ranks 25th of the 52 states that have any substation-adjacent candidate sites. Texas leads with 3,635. Nationally, substation-adjacent sites average 57.4/100 DC Readiness, above the 53.0 average across all site types. Across every site type, Arkansas averages 53.6, the 28th-highest of 52 states, and its candidate sites face an average interconnection-queue wait of 4.3 years.
Where are the highest-scoring substation-adjacent sites in Arkansas?
The top 25 range from 68.9 to 63.1 on the 0–100 DC Readiness Score. They are concentrated in Benton County (3), Pulaski County (3), Hot Spring County (3) and Washington County (3). By grid region, 18 are in MISO and 7 are in SPP.
County pages: Benton County · Pulaski County · Hot Spring County · Washington County
What power, fiber and flood exposure do these substation-adjacent sites have?
Of the top 25 substation-adjacent sites in Arkansas, 25 have a recorded nearest-substation voltage, with a median of 500 kV; for 23 that substation is rated 230 kV or higher. Their counties have a median of 7 fixed fiber broadband providers in FCC data. The median distance to the nearest internet exchange facility is 34 km. The median interconnection-queue wait in their markets is 4.3 years. 1 of the 8 with a mapped FEMA flood zone sits in a high-risk (A or V) zone. 1 lies within 25 km of a binding transmission constraint.
Frequently asked questions
How many substation-adjacent datacenter sites are in Arkansas?
GridCensus catalogs 758 substation-adjacent datacenter candidate sites in Arkansas, 2% of the national total for this type (25th of 52 states).
What is a substation-adjacent datacenter site?
Parcels sited next to existing transmission substations. Co-location with a substation is the single strongest speed-to-power signal — interconnection distance is measured in feet, not miles.
What is the best substation-adjacent datacenter site in Arkansas?
By DC Readiness Score, TONTITOWN in Benton County ranks first at 68.9/100, followed by MABELVALE SUBSTATION in Pulaski County at 68.6.
Which Arkansas counties have the best substation-adjacent sites?
The top 25 substation-adjacent sites in Arkansas are concentrated in Benton County (3), Pulaski County (3), Hot Spring County (3) and Washington County (3).
How does Arkansas score for datacenters overall?
All 1,651 scored sites in Arkansas average 53.6/100 DC Readiness, the 28th-highest of 52 states, against a national average of 53.0.
More on substation-adjacent sites and Arkansas
Substation-Adjacent sites in other states
- Substation-Adjacent sites in Texas· 3,635 sites
- Substation-Adjacent sites in California· 1,573 sites
- Substation-Adjacent sites in Florida· 1,539 sites
- Substation-Adjacent sites in Georgia· 1,530 sites
- Substation-Adjacent sites in Oklahoma· 1,344 sites
- Substation-Adjacent sites in Washington· 1,343 sites
- Substation-Adjacent sites in Minnesota· 1,270 sites
- Substation-Adjacent sites in Kentucky· 1,261 sites
Dataset updated . Screening estimates derived from public data sources.
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 November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Substation-Adjacent datacenter sites in Arkansas”, https://gridcensus.com/site-types/substation/arkansas (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for Substation-Adjacent sites in Arkansas 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.