LYON COUNTY
SubstationSouth Dakota · OTTER TAIL POWER CO
LYON COUNTY is an electric transmission substation in South Dakota, operated by OTTER TAIL POWER CO. It is classified as high-voltage (345 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 |
|---|---|---|---|---|
| #14444 | 345 kV | OTTER TAIL POWER CO | IN SERVICE | 59.3 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of LYON COUNTY, 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 |
|---|---|---|---|---|---|---|---|
| LYON COUNTY | Substation-Adjacent | MN | Lyon County | 345 kV | 600 MW | 1.0 yrs | 71.6 |
| UNKNOWN170998 | Substation-Adjacent | MN | Yellow Medicine County | 230 kV | 300 MW | 1.0 yrs | 69.9 |
| TAP138582 | Substation-Adjacent | MN | Chippewa County | 230 kV | 300 MW | 1.4 yrs | 68.8 |
| MINN VALLEY | Substation-Adjacent | MN | Yellow Medicine County | 345 kV | 600 MW | 1.4 yrs | 68.8 |
| UNKNOWN170998 | Substation-Adjacent | MN | Yellow Medicine County | 230 kV | 300 MW | 1.4 yrs | 68.4 |
| UNKNOWN132582 | Substation-Adjacent | MN | Lyon County | 115 kV | 100 MW | 1.4 yrs | 67.4 |
| LYON COUNTY | Substation-Adjacent | MN | Redwood County | 345 kV | 600 MW | 1.4 yrs | 67.0 |
| UNKNOWN132552 | Substation-Adjacent | MN | Lyon County | 115 kV | 100 MW | 1.4 yrs | 66.9 |
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
This page shows a public slice of the GridCensus dataset for LYON COUNTY substation, South Dakota. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.