GUTTENBERG
SubstationIowa
At a glance
GUTTENBERG is an electric transmission substation in Iowa. It is classified as distribution (69–115 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 |
|---|---|---|---|---|
| #159698 | 69 kV | — | IN SERVICE | 0.0 mi |
| #159700 | 69 kV | — | IN SERVICE | 9.1 mi |
| #160474 | 69 kV | — | IN SERVICE | 11.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of GUTTENBERG, 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 |
|---|---|---|---|---|---|---|---|
| EC Near Hopkinton | Greenfield | IA | Delaware | — | — | 4.3 yrs | 63.3 |
| EC Coal Dubuque County | Greenfield | IA | Dubuque County | — | — | 4.3 yrs | 62.2 |
| NELSON DEWEY SW YD | Substation-Adjacent | WI | Clayton County | 161 kV | 100 MW | 4.3 yrs | 61.4 |
| OZ Crawford | Greenfield | WI | Crawford | — | — | 4.3 yrs | 61.3 |
| EC Near Dubuque | Greenfield | IA | Dubuque | — | — | 4.3 yrs | 61.2 |
| EC Near Nelson Dewey Generating Station | Greenfield | WI | Grant | — | — | 4.3 yrs | 60.4 |
| EC Coal Clayton County | Greenfield | IA | Clayton County | — | — | 4.3 yrs | 60.4 |
| HICKORY CREEK | Substation-Adjacent | IA | Dubuque County | 161 kV | 100 MW | 4.3 yrs | 60.3 |
How does GUTTENBERG compare with other substations in Iowa?
Iowa has 1,368 substation records in HIFLD, of which 104 carry a station name; the rest are unnamed tap points, risers and line ends. 9 named substations in the state are in GUTTENBERG's 69–114 kV band (9% of named stations). 85 sit in a higher band. 30 named substations in Iowa operate at 345 kV or above. The highest voltage recorded in the state is 345 kV, and the state median is 161 kV.
How do candidate sites near GUTTENBERG score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 63 on the 0–100 DC Readiness scale. They fall in Delaware, Dubuque County, Clayton County, Crawford. 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
What voltage is GUTTENBERG substation?
GUTTENBERG 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 GUTTENBERG is below the national midpoint.
How many transmission lines connect to GUTTENBERG substation?
1 transmission line terminate at or pass through GUTTENBERG in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 20.1 miles.
Where is GUTTENBERG substation located?
GUTTENBERG is in Iowa at 42.7908, -91.1104. The datacenter candidate sites closest to it are in Delaware, Dubuque County, Clayton County.
Are there datacenter candidate sites near GUTTENBERG substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of GUTTENBERG. The highest-scoring is EC Near Hopkinton at 63/100. Across Iowa, the average DC Readiness score is 56.4.
Other 69 kV substations in Iowa
- HOSPERS· 3 lines
- PEOSTA· 3 lines
- HANLONTOWN· 2 lines
- MISSOURI VALLEY· 2 lines
- HARPERS FERRY· 1 lines
- LYONS· 1 lines
- RICHARDSVILLE· 1 lines
- WEST SUB-STATION· 1 lines
- All named substations in Iowa· 104 stations
- Datacenter candidate sites in Iowa· 2,572 sites
- Brownfield and retired plant sites in Iowa
- Substations by state
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, “GUTTENBERG substation, Iowa”, https://gridcensus.com/substations/iowa/guttenberg-bbad6787 (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 GUTTENBERG 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.