DELVO
SubstationNorth Dakota · OTTER TAIL POWER CO
At a glance
DELVO is an electric transmission substation in North Dakota, on OTTER TAIL POWER CO's transmission network. It is classified as distribution (69–115 kv) and connects 2 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 |
|---|---|---|---|---|
| #134899 | 69 kV | OTTER TAIL POWER CO | IN SERVICE | 5.6 mi |
| #147247 | 69 kV | OTTER TAIL POWER CO | IN SERVICE | 4.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DELVO, 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 |
|---|---|---|---|---|---|---|---|
| MAPLE RIVER | Substation-Adjacent | ND | Cass County | 345 kV | 600 MW | 4.3 yrs | 67.1 |
| SHEYENNE | Substation-Adjacent | ND | Clay County | 230 kV | 300 MW | 4.3 yrs | 66.4 |
| BISON | Substation-Adjacent | ND | Cass County | 345 kV | 600 MW | 4.3 yrs | 66.0 |
| FRONTIER | Substation-Adjacent | ND | Clay County | 230 kV | 300 MW | 4.3 yrs | 65.4 |
| MOORHEAD | Substation-Adjacent | MN | Clay County | 230 kV | 300 MW | 4.3 yrs | 65.1 |
| OZ Cass | Greenfield | ND | Cass | — | — | 4.3 yrs | 65.1 |
| FARGO | Substation-Adjacent | ND | Cass County | 230 kV | 300 MW | 4.3 yrs | 65.0 |
| OZ Cass | Greenfield | ND | Cass | — | — | 4.3 yrs | 64.7 |
How does DELVO compare with other substations in North Dakota?
North Dakota has 1,364 substation records in HIFLD, of which 64 carry a station name; the rest are unnamed tap points, risers and line ends. 4 named substations in the state are in DELVO's 69–114 kV band (6% of named stations). 57 sit in a higher band. 11 named substations in North Dakota operate at 345 kV or above. The highest voltage recorded in the state is 400 kV, and the state median is 230 kV.
Who owns the transmission lines at DELVO?
The 2 connected lines listed above are owned by OTTER TAIL POWER CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 9.8 miles.
How do candidate sites near DELVO score?
The 8 highest-scoring candidate sites within about 25 miles range from 65 to 67 on the 0–100 DC Readiness scale. They fall in Cass County, Clay County, Cass. The North Dakota average across 1,020 scored sites is 55.7. 453 of those North Dakota sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is DELVO substation?
DELVO 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 DELVO is below the national midpoint.
How many transmission lines connect to DELVO substation?
2 transmission lines terminate at or pass through DELVO in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 9.8 miles.
Who owns DELVO substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at DELVO belong to OTTER TAIL POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is DELVO substation located?
DELVO is in North Dakota at 46.8823, -96.9256. The datacenter candidate sites closest to it are in Cass County, Clay County, Cass.
Are there datacenter candidate sites near DELVO substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of DELVO. The highest-scoring is MAPLE RIVER at 67/100. Across North Dakota, the average DC Readiness score is 55.7.
Other 69 kV substations in North Dakota
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, “DELVO substation, North Dakota”, https://gridcensus.com/substations/north-dakota/delvo-ec95ba0a (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 DELVO substation, North Dakota 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.