TAP137916
SubstationIowa
At a glance
TAP137916 is an electric transmission substation in Iowa. 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 |
|---|---|---|---|---|
| #100215 | 69 kV | — | IN SERVICE | 2.2 mi |
| #102892 | 69 kV | — | IN SERVICE | 5.2 mi |
| #120911 | 69 kV | — | IN SERVICE | 0.1 mi |
| #137587 | 69 kV | — | IN SERVICE | 0.0 mi |
| #155769 | 69 kV | — | IN SERVICE | 0.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP137916, 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 |
| UNKNOWN131373 | Substation-Adjacent | IA | Jackson County | 345 kV | 600 MW | 4.3 yrs | 64.9 |
| 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 |
How do candidate sites near TAP137916 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, Jackson County, Clayton County, Dubuque. The Iowa average across 2,572 scored sites is 56.4. 761 of those Iowa sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
How many transmission lines connect to TAP137916 substation?
3 transmission lines terminate at or pass through TAP137916 in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 7.5 miles.
Where is TAP137916 substation located?
TAP137916 is in Iowa at 42.4775, -90.6650. The datacenter candidate sites closest to it are in Dubuque County, Jackson County, Clayton County.
Are there datacenter candidate sites near TAP137916 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP137916. The highest-scoring is SALEM at 65/100. Across Iowa, the average DC Readiness score is 56.4.
More in Iowa
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, “TAP137916 substation, Iowa”, https://gridcensus.com/substations/iowa/tap137916-b069d2c6 (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 TAP137916 substation, Iowa 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.