DEADEND172040
SubstationMichigan · AMERICAN TRANSMISSION CO
At a glance
DEADEND172040 is an electric transmission substation in Michigan, on AMERICAN TRANSMISSION CO's transmission network. It is classified as sub-transmission (138 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 |
|---|---|---|---|---|
| #120881 | 138 kV | AMERICAN TRANSMISSION CO | — | 4.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DEADEND172040, 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 |
|---|---|---|---|---|---|---|---|
| DEAD RIVER | Substation-Adjacent | MI | Marquette County | 345 kV | 600 MW | 2.2 yrs | 66.4 |
| EC Coal Marquette County | Greenfield | MI | Marquette County | — | — | 2.2 yrs | 59.8 |
| TAP138651 | Substation-Adjacent | MI | Marquette County | 138 kV | 100 MW | 2.2 yrs | 57.7 |
| PERCH LAKE | Substation-Adjacent | MI | Marquette County | 138 kV | 100 MW | 2.2 yrs | 57.7 |
| DEADEND172040 | Substation-Adjacent | MI | Marquette County | 138 kV | 100 MW | 2.2 yrs | 57.6 |
| NATIONAL | Substation-Adjacent | MI | Marquette County | 138 kV | 100 MW | 2.2 yrs | 57.5 |
| FORSYTH | Substation-Adjacent | MI | Dickinson County | 138 kV | 100 MW | 2.2 yrs | 57.3 |
| EMPIRE MINE | Substation-Adjacent | MI | Marquette County | 138 kV | 100 MW | 2.2 yrs | 56.9 |
Who owns the transmission lines at DEADEND172040?
The 1 connected line listed above is owned by AMERICAN TRANSMISSION CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 4.5 miles.
How do candidate sites near DEADEND172040 score?
The 8 highest-scoring candidate sites within about 25 miles range from 57 to 66 on the 0–100 DC Readiness scale. They fall in Marquette County, Dickinson 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
What voltage is DEADEND172040 substation?
DEADEND172040 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 DEADEND172040 is above the national midpoint.
How many transmission lines connect to DEADEND172040 substation?
1 transmission line terminate at or pass through DEADEND172040 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 4.5 miles.
Who owns DEADEND172040 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at DEADEND172040 belong to AMERICAN TRANSMISSION CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is DEADEND172040 substation located?
DEADEND172040 is in Michigan at 46.4841, -87.6459. The datacenter candidate sites closest to it are in Marquette County, Dickinson County.
Are there datacenter candidate sites near DEADEND172040 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of DEADEND172040. The highest-scoring is DEAD RIVER at 66/100. 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, “DEADEND172040 substation, Michigan”, https://gridcensus.com/substations/michigan/deadend172040-41682b98 (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 DEADEND172040 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.