AEP MEDFORD SUBSTATION
SubstationIndiana · INDIANA MICHIGAN POWER CO
At a glance
AEP MEDFORD SUBSTATION is an electric transmission substation in Indiana, on INDIANA MICHIGAN POWER CO's transmission network. It is classified as sub-transmission (138 kv) and connects 4 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 |
|---|---|---|---|---|
| #114326 | 138 kV | INDIANA MICHIGAN POWER CO | IN SERVICE | 7.0 mi |
| #143879 | 138 kV | INDIANA MICHIGAN POWER CO | IN SERVICE | 3.7 mi |
| #147840 | 138 kV | INDIANA MICHIGAN POWER CO | IN SERVICE | 9.2 mi |
| #176311 | 138 kV | INDIANA MICHIGAN POWER CO | IN SERVICE | 4.5 mi |
| #400020 | 138 kV | AEP INDIANA MICHIGAN POWER CO | IN SERVICE | 3.2 mi |
| #400024 | 138 kV | AEP INDIANA MICHIGAN POWER CO | IN SERVICE | 3.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of AEP MEDFORD SUBSTATION, 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 |
|---|---|---|---|---|---|---|---|
| FALL CREEK | Substation-Adjacent | IN | Henry County | 345 kV | 600 MW | 3.0 yrs | 64.5 |
| GREENSBORO | Substation-Adjacent | IN | Henry County | 345 kV | 600 MW | 3.0 yrs | 63.5 |
| UNKNOWN167570 | Substation-Adjacent | IN | Henry County | 345 kV | 600 MW | 3.0 yrs | 61.9 |
| UNKNOWN167571 | Substation-Adjacent | IN | Randolph County | 345 kV | 600 MW | 3.0 yrs | 60.9 |
| DESOTO | Substation-Adjacent | IN | Delaware County | 345 kV | 600 MW | 3.0 yrs | 60.8 |
| OZ Madison | Greenfield | IN | Madison | — | — | 3.0 yrs | 60.3 |
| ANDERSON | Substation-Adjacent | IN | Madison County | 138 kV | 100 MW | 3.0 yrs | 59.5 |
| EC Near Cabin Creek Renewable Energy Station | Greenfield | IN | Randolph | — | — | 3.0 yrs | 58.9 |
How does AEP MEDFORD SUBSTATION compare with other substations in Indiana?
Indiana has 2,077 substation records in HIFLD, of which 306 carry a station name; the rest are unnamed tap points, risers and line ends. 114 named substations in the state are in AEP MEDFORD SUBSTATION's 115–229 kV band (37% of named stations). 84 sit in a higher band. 69 named substations in Indiana 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 AEP MEDFORD SUBSTATION?
The 6 connected lines listed above are owned by INDIANA MICHIGAN POWER CO, AEP INDIANA MICHIGAN POWER CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 30.9 miles.
How do candidate sites near AEP MEDFORD SUBSTATION score?
The 8 highest-scoring candidate sites within about 25 miles range from 59 to 65 on the 0–100 DC Readiness scale. They fall in Henry County, Randolph County, Delaware County, Madison. The Indiana average across 8,629 scored sites is 54. 1,024 of those Indiana sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is AEP MEDFORD SUBSTATION substation?
AEP MEDFORD SUBSTATION has a maximum voltage of 138 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so AEP MEDFORD SUBSTATION is above the national midpoint.
How many transmission lines connect to AEP MEDFORD SUBSTATION substation?
4 transmission lines terminate at or pass through AEP MEDFORD SUBSTATION in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 30.9 miles.
Who owns AEP MEDFORD SUBSTATION substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at AEP MEDFORD SUBSTATION belong to INDIANA MICHIGAN POWER CO, and others to AEP INDIANA MICHIGAN POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is AEP MEDFORD SUBSTATION substation located?
AEP MEDFORD SUBSTATION is in Indiana at 40.1481, -85.3422. The datacenter candidate sites closest to it are in Henry County, Randolph County, Delaware County.
Are there datacenter candidate sites near AEP MEDFORD SUBSTATION substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of AEP MEDFORD SUBSTATION. The highest-scoring is FALL CREEK at 65/100. Across Indiana, the average DC Readiness score is 54.
Other 138 kV substations in Indiana
- NORTHEAST· 14 lines
- ROBISON PARK (138 KV)· 12 lines
- TWIN BRANCH (138 KV)· 12 lines
- LINCOLN· 10 lines
- BROWN (138 KV)· 8 lines
- MCKINLEY· 8 lines
- NEW CARLISLE· 8 lines
- SOUTH BEND· 8 lines
- All named substations in Indiana· 306 stations
- Datacenter candidate sites in Indiana· 8,629 sites
- Brownfield and retired plant sites in Indiana
- 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, “AEP MEDFORD SUBSTATION substation, Indiana”, https://gridcensus.com/substations/indiana/aep-medford-substation-bfa4a637 (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 AEP MEDFORD SUBSTATION substation, Indiana 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.