TAP140398
SubstationMichigan · WOLVERINE POWER SUPPLY COOP
At a glance
TAP140398 is an electric transmission substation in Michigan, on WOLVERINE POWER SUPPLY COOP's transmission network. It is classified as sub-transmission (138 kv) 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
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 |
|---|---|---|---|---|
| #126635 | 138 kV | WOLVERINE POWER SUPPLY COOP | IN SERVICE | 0.0 mi |
| #148801 | 138 kV | WOLVERINE POWER SUPPLY COOP | IN SERVICE | 1.0 mi |
| #165923 | 138 kV | WOLVERINE POWER SUPPLY COOP | IN SERVICE | 1.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP140398, 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 |
|---|---|---|---|---|---|---|---|
| ROOSEVELT | Substation-Adjacent | MI | Ottawa County | 345 kV | 600 MW | 2.2 yrs | 67.7 |
| UNKNOWN128758 | Substation-Adjacent | MI | Ottawa County | 345 kV | 600 MW | 2.2 yrs | 66.8 |
| UNKNOWN128736 | Substation-Adjacent | MI | Ottawa County | 345 kV | 600 MW | 2.2 yrs | 65.6 |
| EC Near Autumn Hills Generating Facility | Greenfield | MI | Ottawa | — | — | 2.2 yrs | 64.1 |
| UNKNOWN128762 | Substation-Adjacent | MI | Kent County | 138 kV | 100 MW | 2.2 yrs | 62.8 |
| UNKNOWN128729 | Substation-Adjacent | MI | Ottawa County | 138 kV | 100 MW | 2.2 yrs | 62.4 |
| OZ Muskegon | Greenfield | MI | Muskegon | — | — | 2.2 yrs | 61.7 |
| EC Coal Ottawa County | Greenfield | MI | Ottawa County | — | — | 2.2 yrs | 61.3 |
Who owns the transmission lines at TAP140398?
The 3 connected lines listed above are owned by WOLVERINE POWER SUPPLY COOP. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 3 miles.
How do candidate sites near TAP140398 score?
The 8 highest-scoring candidate sites within about 25 miles range from 61 to 68 on the 0–100 DC Readiness scale. They fall in Ottawa County, Ottawa, Kent County, Muskegon. 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
What voltage is TAP140398 substation?
TAP140398 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 TAP140398 is above the national midpoint.
How many transmission lines connect to TAP140398 substation?
3 transmission lines terminate at or pass through TAP140398 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 3 miles.
Who owns TAP140398 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP140398 belong to WOLVERINE POWER SUPPLY COOP. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP140398 substation located?
TAP140398 is in Michigan at 43.2154, -86.2232. The datacenter candidate sites closest to it are in Ottawa County, Ottawa, Kent County.
Are there datacenter candidate sites near TAP140398 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP140398. The highest-scoring is ROOSEVELT at 68/100. 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, “TAP140398 substation, Michigan”, https://gridcensus.com/substations/michigan/tap140398-161f6666 (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 TAP140398 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.