MILROY
SubstationIndiana · DUKE ENERGY INDIANA INC
At a glance
MILROY is an electric transmission substation in Indiana, on DUKE ENERGY INDIANA INC's transmission network. It is classified as distribution (69–115 kv) 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 |
|---|---|---|---|---|
| #118130 | 69 kV | DUKE ENERGY INDIANA INC | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of MILROY, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN124480 | Substation-Adjacent | IN | Hancock County | 230 kV | 300 MW | 3.0 yrs | 64.3 |
| UNKNOWN125086 | Substation-Adjacent | IN | Shelby County | 345 kV | 600 MW | 3.0 yrs | 64.1 |
| GWYNNEVILLE | Substation-Adjacent | IN | Shelby County | 345 kV | 600 MW | 3.0 yrs | 63.9 |
| GREENSBORO | Substation-Adjacent | IN | Henry County | 345 kV | 600 MW | 3.0 yrs | 63.5 |
| BATESVILLE | Substation-Adjacent | IN | Ripley County | 345 kV | 600 MW | 3.0 yrs | 63.3 |
| EC Near Connersville | Greenfield | IN | Fayette | — | — | 3.0 yrs | 60.0 |
| UNKNOWN124479 | Substation-Adjacent | IN | Hancock County | 138 kV | 100 MW | 3.0 yrs | 59.9 |
| UNKNOWN124476 | Substation-Adjacent | IN | Hancock County | 138 kV | 100 MW | 3.0 yrs | 59.8 |
How does MILROY 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. 63 named substations in the state are in MILROY's 69–114 kV band (21% of named stations). 198 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 MILROY?
The 1 connected line listed above is owned by DUKE ENERGY INDIANA INC. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 0 miles.
How do candidate sites near MILROY score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 64 on the 0–100 DC Readiness scale. They fall in Hancock County, Shelby County, Henry County, Ripley County. 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 MILROY substation?
MILROY 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 MILROY is below the national midpoint.
How many transmission lines connect to MILROY substation?
1 transmission line terminate at or pass through MILROY in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 0 miles.
Who owns MILROY substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at MILROY belong to DUKE ENERGY INDIANA INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is MILROY substation located?
MILROY is in Indiana at 39.5243, -85.4607. The datacenter candidate sites closest to it are in Hancock County, Shelby County, Henry County.
Are there datacenter candidate sites near MILROY substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of MILROY. The highest-scoring is UNKNOWN124480 at 64/100. Across Indiana, the average DC Readiness score is 54.
Other 69 kV substations in Indiana
- EDWARDSPORT STATION (69 KV)· 4 lines
- ANGOLA· 3 lines
- BEANBLOSSOM-SW STA· 3 lines
- MARTINSVILLE· 3 lines
- ANCHOR HOCKING· 2 lines
- BENTON CORNER· 2 lines
- BLOOMFIELD· 2 lines
- BROADVIEW· 2 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, “MILROY substation, Indiana”, https://gridcensus.com/substations/indiana/milroy-1fef5f26 (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 MILROY 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.