Lake Preston
BrownfieldLake Preston, Kingsbury, South Dakota · Otter Tail Power Co
Lake Preston is a oil plant in Lake Preston, Kingsbury, South Dakota, retired 1978-01-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 24 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Nearby datacenter candidate sites
Scored candidate sites near Lake Preston, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| UNKNOWN131211 | Substation-Adjacent | SD | Brookings County | 115 kV | 100 MW | 1.0 yrs | 66.8 |
| UNKNOWN131209 | Substation-Adjacent | SD | Clark County | 230 kV | 300 MW | 1.0 yrs | 65.4 |
| Greenfield (UNKNOWN131209 - WATERTOWN) | Greenfield | SD | Clark County | 230 kV | 300 MW | 1.0 yrs | 65.4 |
| Greenfield (UNKNOWN131209 - WATERTOWN) | Greenfield | SD | Hamlin County | 230 kV | 300 MW | 1.0 yrs | 64.9 |
| Greenfield (UNKNOWN131209 - WATERTOWN) | Greenfield | SD | Hamlin County | 230 kV | 300 MW | 1.0 yrs | 64.9 |
| Greenfield (UNKNOWN131209 - WATERTOWN) | Greenfield | SD | Clark County | 230 kV | 300 MW | 1.0 yrs | 64.8 |
| Greenfield (UNKNOWN131209 - WATERTOWN) | Greenfield | SD | Clark County | 230 kV | 300 MW | 1.0 yrs | 64.3 |
| Greenfield (UNKNOWN131209 - WATERTOWN) | Greenfield | SD | Hamlin County | 230 kV | 300 MW | 1.0 yrs | 64.3 |
See all datacenter sites in South Dakota →
Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Lake Preston, Lake Preston, Kingsbury, 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.