TAP158737
SubstationWisconsin · AMERICAN TRANSMISSION CO
At a glance
TAP158737 is an electric transmission substation in Wisconsin, on AMERICAN TRANSMISSION CO's transmission network. It is classified as distribution (69–115 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #158993 | 69 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 3.3 mi |
| #158994 | 69 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 0.0 mi |
| #158995 | 69 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 5.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP158737, 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 |
|---|---|---|---|---|---|---|---|
| FINNEGAN | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 61.0 |
| EC Near Juneau | Greenfield | WI | Juneau | — | — | 4.3 yrs | 60.8 |
| ROCK SPRINGS | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 60.2 |
| KIRKWOOD | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 60.2 |
| TAP138010 | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 60.1 |
| TAP138012 | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 60.1 |
| TAP138011 | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 60.1 |
| ZOBEL | Substation-Adjacent | WI | Sauk County | 138 kV | 100 MW | 4.3 yrs | 60.0 |
Who owns the transmission lines at TAP158737?
The 3 connected lines listed above are owned by AMERICAN TRANSMISSION CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 8.4 miles.
How do candidate sites near TAP158737 score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 61 on the 0–100 DC Readiness scale. They fall in Sauk County, Juneau. The Wisconsin average across 3,340 scored sites is 55.4. 1,248 of those Wisconsin sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP158737 substation?
TAP158737 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 TAP158737 is below the national midpoint.
How many transmission lines connect to TAP158737 substation?
3 transmission lines terminate at or pass through TAP158737 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 8.4 miles.
Who owns TAP158737 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP158737 belong to AMERICAN TRANSMISSION CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP158737 substation located?
TAP158737 is in Wisconsin at 43.6780, -89.8584. The datacenter candidate sites closest to it are in Sauk County, Juneau.
Are there datacenter candidate sites near TAP158737 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP158737. The highest-scoring is FINNEGAN at 61/100. Across Wisconsin, the average DC Readiness score is 55.4.
More in Wisconsin
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, “TAP158737 substation, Wisconsin”, https://gridcensus.com/substations/wisconsin/tap158737-6885ca18 (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 TAP158737 substation, Wisconsin 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.