STEPHENSBURG
SubstationKentucky · EAST KENTUCKY POWER COOP, INC
At a glance
STEPHENSBURG is an electric transmission substation in Kentucky, on EAST KENTUCKY POWER COOP, INC's transmission network. It is classified as distribution (69–115 kv) and connects 5 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 |
|---|---|---|---|---|
| #104766 | 69 kV | EAST KENTUCKY POWER COOP, INC | IN SERVICE | 7.4 mi |
| #106982 | 69 kV | EAST KENTUCKY POWER COOP, INC | IN SERVICE | 8.7 mi |
| #123825 | 69 kV | EAST KENTUCKY POWER COOP, INC | IN SERVICE | 9.1 mi |
| #148786 | 69 kV | — | IN SERVICE | 2.0 mi |
| #163808 | 69 kV | EAST KENTUCKY POWER COOP, INC | IN SERVICE | 10.8 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of STEPHENSBURG, 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 |
|---|---|---|---|---|---|---|---|
| HARDIN | Substation-Adjacent | KY | Hardin County | 345 kV | 600 MW | 3.9 yrs | 65.7 |
| EC Near Mill Creek (KY) | Greenfield | KY | Jefferson | — | — | 3.9 yrs | 63.7 |
| UNKNOWN127531 | Substation-Adjacent | KY | Meade County | 138 kV | 100 MW | 3.9 yrs | 61.3 |
| EC Near Mill Creek (KY) | Greenfield | KY | Jefferson | — | — | 3.9 yrs | 60.4 |
| TAP155580 | Substation-Adjacent | KY | Grayson County | 138 kV | 100 MW | 3.9 yrs | 60.1 |
| UNKNOWN127827 | Substation-Adjacent | KY | Hardin County | 138 kV | 100 MW | 3.9 yrs | 59.9 |
| TAP160469 | Substation-Adjacent | KY | Hardin County | 138 kV | 100 MW | 3.9 yrs | 59.8 |
| UNKNOWN155591 | Substation-Adjacent | KY | Grayson County | 138 kV | 100 MW | 3.9 yrs | 59.7 |
How does STEPHENSBURG compare with other substations in Kentucky?
Kentucky has 2,070 substation records in HIFLD, of which 190 carry a station name; the rest are unnamed tap points, risers and line ends. 57 named substations in the state are in STEPHENSBURG's 69–114 kV band (30% of named stations). 121 sit in a higher band. 19 named substations in Kentucky operate at 345 kV or above. The highest voltage recorded in the state is 765 kV, and the state median is 138 kV.
Who owns the transmission lines at STEPHENSBURG?
The 5 connected lines listed above are owned by EAST KENTUCKY POWER COOP, INC. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 37.9 miles.
How do candidate sites near STEPHENSBURG score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 66 on the 0–100 DC Readiness scale. They fall in Hardin County, Jefferson, Meade County, Grayson County. The Kentucky average across 7,741 scored sites is 52.8. 1,261 of those Kentucky sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is STEPHENSBURG substation?
STEPHENSBURG has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so STEPHENSBURG is below the national midpoint.
How many transmission lines connect to STEPHENSBURG substation?
5 transmission lines terminate at or pass through STEPHENSBURG in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 37.9 miles.
Who owns STEPHENSBURG substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at STEPHENSBURG belong to EAST KENTUCKY POWER COOP, INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is STEPHENSBURG substation located?
STEPHENSBURG is in Kentucky at 37.6013, -86.0249. The datacenter candidate sites closest to it are in Hardin County, Jefferson, Meade County.
Are there datacenter candidate sites near STEPHENSBURG substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of STEPHENSBURG. The highest-scoring is HARDIN at 66/100. Across Kentucky, the average DC Readiness score is 52.8.
Other 69 kV substations in Kentucky
- DIX DAM· 6 lines
- LYNCH· 5 lines
- MORGAN COUNTY· 5 lines
- COLEMAN· 4 lines
- MIDDLESBORO· 4 lines
- ROCKY BRANCH· 4 lines
- SEMINOLE· 4 lines
- THELMA (EKPC)· 4 lines
- All named substations in Kentucky· 190 stations
- Datacenter candidate sites in Kentucky· 7,741 sites
- Brownfield and retired plant sites in Kentucky
- 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, “STEPHENSBURG substation, Kentucky”, https://gridcensus.com/substations/kentucky/stephensburg-c2f6a300 (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 STEPHENSBURG substation, Kentucky 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.