LALLIE
SubstationNorth Dakota · OTTER TAIL POWER CO
At a glance
LALLIE is an electric transmission substation in North Dakota, on OTTER TAIL POWER CO's transmission network. It is classified as unclassified and connects 0 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 |
|---|---|---|---|---|
| #178175 | 69 kV | OTTER TAIL POWER CO | — | 0.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LALLIE, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN133386 | Substation-Adjacent | ND | Ramsey County | 230 kV | 300 MW | 4.3 yrs | 62.0 |
| OZ Benson | Greenfield | ND | Benson | — | — | 4.3 yrs | 59.7 |
| BARLOW | Substation-Adjacent | ND | Eddy County | 115 kV | 100 MW | 4.3 yrs | 57.6 |
| DEVILS LAKE | Substation-Adjacent | ND | Ramsey County | 115 kV | 100 MW | 4.3 yrs | 57.6 |
| UNKNOWN134286 | Substation-Adjacent | ND | Benson County | 115 kV | 100 MW | 4.3 yrs | 57.5 |
| UNKNOWN134304 | Substation-Adjacent | ND | Benson County | 115 kV | 100 MW | 4.3 yrs | 57.3 |
| UNKNOWN134306 | Substation-Adjacent | ND | Benson County | 115 kV | 100 MW | 4.3 yrs | 57.3 |
| Mine Site | Former Mine | ND | Ramsey County | — | — | 4.3 yrs | 51.8 |
Who owns the transmission lines at LALLIE?
The 1 connected line listed above is owned by OTTER TAIL POWER CO. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 0.5 miles.
How do candidate sites near LALLIE score?
The 8 highest-scoring candidate sites within about 25 miles range from 52 to 62 on the 0–100 DC Readiness scale. They fall in Ramsey County, Benson, Eddy County, Benson County. 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
How many transmission lines connect to LALLIE substation?
0 transmission lines terminate at or pass through LALLIE in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 0.5 miles.
Who owns LALLIE substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at LALLIE belong to OTTER TAIL POWER CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is LALLIE substation located?
LALLIE is in North Dakota at 47.9820, -99.2131. The datacenter candidate sites closest to it are in Ramsey County, Benson, Eddy County.
Are there datacenter candidate sites near LALLIE substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of LALLIE. The highest-scoring is UNKNOWN133386 at 62/100. Across North Dakota, the average DC Readiness score is 55.7.
More 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, “LALLIE substation, North Dakota”, https://gridcensus.com/substations/north-dakota/lallie-2502136a (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 LALLIE 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.