TAP140186
SubstationMichigan · INDIANA MICHIGAN POWER CO
At a glance
TAP140186 is an electric transmission substation in Michigan, on INDIANA MICHIGAN POWER CO's transmission network. It is classified as unclassified and connects 3 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #103360 | — | INDIANA MICHIGAN POWER CO | IN SERVICE | 0.0 mi |
| #126657 | — | INDIANA MICHIGAN POWER CO | IN SERVICE | 0.3 mi |
| #140901 | — | INDIANA MICHIGAN POWER CO | IN SERVICE | 0.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP140186, 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 |
|---|---|---|---|---|---|---|---|
| OLIVE | Substation-Adjacent | IN | St. Joseph County | 345 kV | 600 MW | 3.0 yrs | 70.9 |
| WEEDS LAKE | Substation-Adjacent | MI | Kalamazoo County | 345 kV | 600 MW | 2.2 yrs | 68.8 |
| KENZIE CREEK | Substation-Adjacent | MI | Cass County | 345 kV | 600 MW | 2.2 yrs | 68.4 |
| JACKSON ROAD | Substation-Adjacent | IN | St. Joseph County | 345 kV | 600 MW | 3.0 yrs | 67.0 |
| TAP138974 | Substation-Adjacent | IN | Elkhart County | 345 kV | 600 MW | 3.0 yrs | 66.7 |
| BENTON HARBOR | Substation-Adjacent | MI | Van Buren County | 345 kV | 600 MW | 2.2 yrs | 66.1 |
| TWIN BRANCH (345 KV) | Substation-Adjacent | IN | St. Joseph County | 345 kV | 600 MW | 3.0 yrs | 66.0 |
| UNKNOWN122939 | Substation-Adjacent | IN | Elkhart County | 345 kV | 600 MW | 3.0 yrs | 65.9 |
Who owns the transmission lines at TAP140186?
The 3 connected lines listed above are owned by INDIANA MICHIGAN POWER CO. Their combined recorded length is about 0.6 miles.
How do candidate sites near TAP140186 score?
The 8 highest-scoring candidate sites within about 25 miles range from 66 to 71 on the 0–100 DC Readiness scale. They fall in St. Joseph County, Kalamazoo County, Cass County, Elkhart County. The Michigan average across 5,157 scored sites is 55.2. 768 of those Michigan sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP140186 substation?
3 transmission lines terminate at or pass through TAP140186 in the HIFLD line data. Together the listed lines cover about 0.6 miles.
Who owns TAP140186 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP140186 belong to INDIANA MICHIGAN POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP140186 substation located?
TAP140186 is in Michigan at 41.9943, -86.0960. The datacenter candidate sites closest to it are in St. Joseph County, Kalamazoo County, Cass County.
Are there datacenter candidate sites near TAP140186 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP140186. The highest-scoring is OLIVE at 71/100. Across Michigan, the average DC Readiness score is 55.2.
More in Michigan
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, “TAP140186 substation, Michigan”, https://gridcensus.com/substations/michigan/tap140186-3cae6f6b (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 TAP140186 substation, Michigan 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.