TAP136965
SubstationWisconsin · AMERICAN TRANSMISSION CO
At a glance
TAP136965 is an electric transmission substation in Wisconsin, on AMERICAN TRANSMISSION CO'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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #113006 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 0.0 mi |
| #126800 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 0.1 mi |
| #137852 | 138 kV | AMERICAN TRANSMISSION CO | IN SERVICE | 15.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP136965, 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 |
|---|---|---|---|---|---|---|---|
| SALEM | Substation-Adjacent | IA | Dubuque County | 345 kV | 600 MW | 4.3 yrs | 65.2 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 4.3 yrs | 62.2 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 4.3 yrs | 62.0 |
| NELSON DEWEY SW YD | Substation-Adjacent | WI | Clayton County | 161 kV | 100 MW | 4.3 yrs | 61.4 |
| EC Near Dubuque | Greenfield | IA | Dubuque | — | — | 4.3 yrs | 61.2 |
| EC Coal Jo Daviess County | Greenfield | IL | Jo Daviess County | — | — | 4.8 yrs | 60.8 |
| UNKNOWN130699 | Substation-Adjacent | IA | Dubuque County | 161 kV | 100 MW | 4.3 yrs | 60.4 |
| HICKORY CREEK | Substation-Adjacent | IA | Dubuque County | 161 kV | 100 MW | 4.3 yrs | 60.3 |
Who owns the transmission lines at TAP136965?
The 3 connected lines listed above are owned by AMERICAN TRANSMISSION CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 15.8 miles.
How do candidate sites near TAP136965 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 Dubuque County, Clayton County, Dubuque, Jo Daviess County. 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 TAP136965 substation?
TAP136965 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 TAP136965 is above the national midpoint.
How many transmission lines connect to TAP136965 substation?
3 transmission lines terminate at or pass through TAP136965 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 15.8 miles.
Who owns TAP136965 substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TAP136965 belong to AMERICAN TRANSMISSION CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TAP136965 substation located?
TAP136965 is in Wisconsin at 42.7187, -90.7020. The datacenter candidate sites closest to it are in Dubuque County, Clayton County, Dubuque.
Are there datacenter candidate sites near TAP136965 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP136965. The highest-scoring is SALEM at 65/100. 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, “TAP136965 substation, Wisconsin”, https://gridcensus.com/substations/wisconsin/tap136965-0ed68807 (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 TAP136965 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.