Electric Substations in North Dakota
64 named substations in North Dakota, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.
At a glance
How is North Dakota's substation network split by voltage?
By maximum voltage, the named substations break down as 11 at 345–499 kV; 29 at 230–344 kV; 17 at 115–229 kV; 4 at 69–114 kV; 3 withvoltage not recorded. 17% of North Dakota's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 230 kV is above the national median of 115 kV.
How does North Dakota compare with other states?
North Dakota ranks 41st of 50 states and DC by number of named substations and 37th by named substations at 345 kV or above. It also has 1,020 scored datacenter candidate sites with an average DC Readiness score of 55.7 (national average 53), and an average power sub-score of 42.7 against 37.4 nationally. Most of those sites (577) are in the MISO market.
Which substations in North Dakota have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| UNDERWOOD | 400 kV | 6 | OTTER TAIL POWER CO |
| ANTELOPE VALLEY | 345 kV | 9 | MONTANA-DAKOTA UTILITIES CO |
| BISON | 345 kV | 3 | OTTER TAIL POWER CO |
| BUFFALO | 345 kV | 7 | OTTER TAIL POWER CO |
| CENTER 345KV SWITCHYARD | 345 kV | 5 | MONTANA-DAKOTA UTILITIES CO |
| CHARLIE CREEK | 345 kV | 10 | MONTANA-DAKOTA UTILITIES CO |
| COYOTE | 345 kV | 4 | MONTANA-DAKOTA UTILITIES CO |
| GRAND FORKS | 345 kV | 8 | OTTER TAIL POWER CO |
| JUDSON | 345 kV | 2 | MONTANA-DAKOTA UTILITIES CO |
| LELAND OLDS 345 KV | 345 kV | 5 | — |
| MAPLE RIVER | 345 kV | 12 | OTTER TAIL POWER CO |
| BALTA | 230 kV | 4 | OTTER TAIL POWER CO |
| BELFIELD | 230 kV | 5 | MONTANA-DAKOTA UTILITIES CO |
| BISMARCK | 230 kV | 8 | OTTER TAIL POWER CO |
| BOWMAN | 230 kV | 5 | MONTANA-DAKOTA UTILITIES CO |
| DICKINSON | 230 kV | 7 | MONTANA-DAKOTA UTILITIES CO |
| DRAYTON | 230 kV | 4 | OTTER TAIL POWER CO |
| ELLENDALE | 230 kV | 5 | OTTER TAIL POWER CO |
| FARGO | 230 kV | 7 | OTTER TAIL POWER CO |
| FINLEY | 230 kV | 5 | OTTER TAIL POWER CO |
| FORMAN | 230 kV | 4 | OTTER TAIL POWER CO |
| FRONTIER | 230 kV | 4 | OTTER TAIL POWER CO |
| GARRISON | 230 kV | 5 | MONTANA-DAKOTA UTILITIES CO |
| HANKINSON | 230 kV | 7 | OTTER TAIL POWER CO |
| HARVEY | 230 kV | 4 | OTTER TAIL POWER CO |
| HESKETT | 230 kV | 8 | MONTANA-DAKOTA UTILITIES CO |
| HESKETT 230 KV | 230 kV | 3 | MONTANA-DAKOTA UTILITIES CO |
| HETTINGER | 230 kV | 8 | MONTANA-DAKOTA UTILITIES CO |
| JAMESTOWN | 230 kV | 11 | OTTER TAIL POWER CO |
| MANDAN JUNCTION | 230 kV | 8 | MONTANA-DAKOTA UTILITIES CO |
| MCHENRY | 230 kV | 4 | OTTER TAIL POWER CO |
| MEDORA | 230 kV | 3 | BASIN ELECTRIC POWER COOP |
| NESET | 230 kV | 7 | MONTANA-DAKOTA UTILITIES CO |
| RHAME | 230 kV | 4 | MONTANA-DAKOTA UTILITIES CO |
| SHEYENNE | 230 kV | 6 | OTTER TAIL POWER CO |
| WAHPETON | 230 kV | 9 | OTTER TAIL POWER CO |
| WASHBURN | 230 kV | 5 | OTTER TAIL POWER CO |
| WATFORD CITY | 230 kV | 6 | MONTANA-DAKOTA UTILITIES CO |
| WEBER | 230 kV | 4 | OTTER TAIL POWER CO |
| WISHEK | 230 kV | 5 | MONTANA-DAKOTA UTILITIES CO |
| BARLOW | 115 kV | 2 | OTTER TAIL POWER CO |
| BEULAH | 115 kV | 5 | MONTANA-DAKOTA UTILITIES CO |
| BISMARCK SWEET AVENUE JUNCTION | 115 kV | 2 | OTTER TAIL POWER CO |
| CARRINGTON | 115 kV | 3 | OTTER TAIL POWER CO |
| DEVILS LAKE | 115 kV | 4 | OTTER TAIL POWER CO |
| EAST BISMARCK | 115 kV | 7 | OTTER TAIL POWER CO |
| FORMAN | 115 kV | 5 | OTTER TAIL POWER CO |
| LAKOTA | 115 kV | 3 | OTTER TAIL POWER CO |
| MDU NEW ENGLAND | 115 kV | 4 | MONTANA-DAKOTA UTILITIES CO |
| NORTHWEST MANDAN SWICTHING STATION | 115 kV | 3 | MONTANA-DAKOTA UTILITIES CO |
| PIONEER | 115 kV | 2 | MONTANA-DAKOTA UTILITIES CO |
| RED RIVER | 115 kV | 2 | OTTER TAIL POWER CO |
| RUGBY | 115 kV | 7 | OTTER TAIL POWER CO |
| STANLEY | 115 kV | 4 | OTTER TAIL POWER CO |
| VALLEY CITY | 115 kV | 5 | OTTER TAIL POWER CO |
| VELVA WIND INTERCONNECTION | 115 kV | 3 | OTTER TAIL POWER CO |
| VETERANS BLVD | 115 kV | 2 | OTTER TAIL POWER CO |
| DELVO | 69 kV | 2 | OTTER TAIL POWER CO |
| GRAGER | 69 kV | 2 | OTTER TAIL POWER CO |
| HORACE | 69 kV | 2 | OTTER TAIL POWER CO |
Every named substation in North Dakota
All 64 named substations, grouped by voltage band.
345–499 kV · 11
230–344 kV · 29
115–229 kV · 17
voltage not recorded · 3
Frequently asked questions
How many electric substations are in North Dakota?
HIFLD records 1,364 substations in North Dakota, of which 64 carry a station name. That is the 41st-most named substations of any state in the dataset.
What is the highest-voltage substation in North Dakota?
UNDERWOOD is the highest-voltage named substation in North Dakota, at 400 kV.
Which substation in North Dakota connects the most transmission lines?
MAPLE RIVER has the most connected transmission lines of the named substations listed here, with 12 at up to 345 kV.
How many substations in North Dakota are 345 kV or higher?
11 of 64 named substations (17%) operate at 345 kV or above, compared with 8% nationally. North Dakota ranks 37th of 50 states and DC for named substations at that level.
How many datacenter candidate sites in North Dakota are at substations?
453 of the 1,020 scored candidate sites in North Dakota are substation sites — locations generated at an existing substation. Scored sites across North Dakota average 55.7 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in North Dakota, A to Z.
More on North Dakota, and states with similar counts
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, “Electric substations in North Dakota”, https://gridcensus.com/substations/north-dakota (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for substations in 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.