JONESBORO SPA
SubstationArkansas · ENTERGY ARKANSAS INC
At a glance
JONESBORO SPA is an electric transmission substation in Arkansas, on ENTERGY ARKANSAS INC's transmission network. It is classified as sub-transmission (138 kv) and connects 8 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 |
|---|---|---|---|---|
| #105160 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 17.8 mi |
| #116206 | 161 kV | ENTERGY ARKANSAS INC | IN SERVICE | 0.9 mi |
| #116801 | 161 kV | SOUTHWESTERN POWER ADMINISTRATION | IN SERVICE | 33.8 mi |
| #121157 | 161 kV | SOUTHWESTERN POWER ADMINISTRATION | IN SERVICE | 63.5 mi |
| #147939 | 161 kV | ENTERGY ARKANSAS INC | — | 0.1 mi |
| #134913 | 69 kV | ENTERGY ARKANSAS INC | IN SERVICE | 3.2 mi |
| #136340 | 69 kV | ENTERGY ARKANSAS INC | IN SERVICE | 2.4 mi |
| #133386 | 69 kV | ENTERGY ARKANSAS INC | IN SERVICE | 3.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of JONESBORO SPA, 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 |
|---|---|---|---|---|---|---|---|
| JONESBORO EHV | Substation-Adjacent | AR | Craighead County | 500 kV | 1,000 MW | 4.3 yrs | 64.4 |
| OZ Craighead | Greenfield | AR | Craighead | — | — | 4.3 yrs | 59.2 |
| OZ Craighead | Greenfield | AR | Craighead | — | — | 4.3 yrs | 58.8 |
| EC Near Paragould | Greenfield | AR | Greene | — | — | 4.3 yrs | 57.7 |
| EC FFE Greene County | Greenfield | AR | Greene County | — | — | 4.3 yrs | 57.4 |
| OZ Craighead | Greenfield | AR | Craighead | — | — | 4.3 yrs | 57.4 |
| EC Near Paragould | Greenfield | AR | Greene | — | — | 4.3 yrs | 56.8 |
| HERGETT JCWL | Substation-Adjacent | AR | Craighead County | 161 kV | 100 MW | 4.3 yrs | 56.6 |
How does JONESBORO SPA compare with other substations in Arkansas?
Arkansas has 1,025 substation records in HIFLD, of which 174 carry a station name; the rest are unnamed tap points, risers and line ends. 104 named substations in the state are in JONESBORO SPA's 115–229 kV band (60% of named stations). 22 sit in a higher band. 17 named substations in Arkansas operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 161 kV.
Who owns the transmission lines at JONESBORO SPA?
The 8 connected lines listed above are owned by ENTERGY ARKANSAS INC, SOUTHWESTERN POWER ADMINISTRATION. Line voltages range from 69 kV to 161 kV. Their combined recorded length is about 125.7 miles.
How do candidate sites near JONESBORO SPA score?
The 8 highest-scoring candidate sites within about 25 miles range from 57 to 64 on the 0–100 DC Readiness scale. They fall in Craighead County, Craighead, Greene, Greene County. The Arkansas average across 1,651 scored sites is 53.6. 758 of those Arkansas sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is JONESBORO SPA substation?
JONESBORO SPA has a maximum voltage of 161 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so JONESBORO SPA is above the national midpoint.
How many transmission lines connect to JONESBORO SPA substation?
8 transmission lines terminate at or pass through JONESBORO SPA in the HIFLD line data. The connected lines listed here run at 161 kV, 69 kV. Together the listed lines cover about 125.7 miles.
Who owns JONESBORO SPA substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at JONESBORO SPA belong to ENTERGY ARKANSAS INC, and others to SOUTHWESTERN POWER ADMINISTRATION. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is JONESBORO SPA substation located?
JONESBORO SPA is in Arkansas at 35.8489, -90.7246. The datacenter candidate sites closest to it are in Craighead County, Craighead, Greene.
Are there datacenter candidate sites near JONESBORO SPA substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of JONESBORO SPA. The highest-scoring is JONESBORO EHV at 64/100. Across Arkansas, the average DC Readiness score is 53.6.
Other 161 kV substations in Arkansas
- VBI· 9 lines
- BULL SHOALS· 8 lines
- NEWPORT SUBSTATION· 7 lines
- NORFORK· 7 lines
- EAST FAYETTEVILLE· 6 lines
- JONESBORO· 6 lines
- MASSARD· 6 lines
- THIRD STREET· 6 lines
- All named substations in Arkansas· 174 stations
- Datacenter candidate sites in Arkansas· 1,651 sites
- Brownfield and retired plant sites in Arkansas
- Substations by state
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, “JONESBORO SPA substation, Arkansas”, https://gridcensus.com/substations/arkansas/jonesboro-spa-31423c37 (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 JONESBORO SPA substation, 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.