HARTFORD CITY
SubstationIndiana · AEP INDIANA MICHIGAN POWER CO
At a glance
HARTFORD CITY is an electric transmission substation in Indiana, on AEP INDIANA MICHIGAN POWER CO's transmission network. It is classified as unclassified and connects 0 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 |
|---|---|---|---|---|
| #400126 | — | AEP INDIANA MICHIGAN POWER CO | IN SERVICE | 0.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of HARTFORD CITY, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN122649 | Substation-Adjacent | IN | Wells County | 345 kV | 600 MW | 3.0 yrs | 64.5 |
| 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 |
| EC Near Montpelier Electric Generating Station | Greenfield | IN | Wells | — | — | 3.0 yrs | 59.9 |
| ANDERSON | Substation-Adjacent | IN | Madison County | 138 kV | 100 MW | 3.0 yrs | 59.5 |
| EC Near Miami Wabash | Greenfield | IN | Wabash | — | — | 3.0 yrs | 59.5 |
Who owns the transmission lines at HARTFORD CITY?
The 1 connected line listed above is owned by AEP INDIANA MICHIGAN POWER CO. Their combined recorded length is about 0.3 miles.
How do candidate sites near HARTFORD CITY score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 65 on the 0–100 DC Readiness scale. They fall in Wells County, Henry County, Randolph County, Delaware 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
How many transmission lines connect to HARTFORD CITY substation?
0 transmission lines terminate at or pass through HARTFORD CITY in the HIFLD line data. Together the listed lines cover about 0.3 miles.
Who owns HARTFORD CITY substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at HARTFORD CITY belong to AEP INDIANA MICHIGAN POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is HARTFORD CITY substation located?
HARTFORD CITY is in Indiana at 40.4501, -85.3609. The datacenter candidate sites closest to it are in Wells County, Henry County, Randolph County.
Are there datacenter candidate sites near HARTFORD CITY substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of HARTFORD CITY. The highest-scoring is UNKNOWN122649 at 65/100. Across Indiana, the average DC Readiness score is 54.
More in Indiana
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, “HARTFORD CITY substation, Indiana”, https://gridcensus.com/substations/indiana/hartford-city-565f29d4 (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 HARTFORD CITY 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.