Lake Preston — Plant Summary
- EIA Plant ID
- 3352
- Capacity
- 24.1 MW
- Primary Fuel
- Oil
- Technology
- Petroleum Liquids
- Status
- Standby
- Location
- Kingsbury, SD
- Operating Since
- 1978
- Generators
- 1
- Operator
- Otter Tail Power Co
- Parent Company
- Otter Tail
- Annual Generation
- 86.01 MWh
- Capacity Factor
- 0.0%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Lake Preston
StandbyDistillate Oil
Ranked #3 of 8 Distillate Oil plants in SD#127 of 827 nationally
24.1 MW Distillate Oil standby in Kingsbury, SD — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
24.1 MW
Nameplate Capacity
1
Generators
unit
Petroleum Liquids
Technology
1978
Operating Since
Location
Coordinates
44.3654, -97.3814
County
Kingsbury, SD
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Otter Tail Power Co | Otter Tail Power | — |
| Owner(s) | Otter Tail Power Co | Otter Tail | — |
| Status | Standby | — | — |
Ownership Chain
About
The Lake Preston plant is a 24.1 MW electricity generating facility located in Kingsbury County, South Dakota. The plant began operating in 1978 and utilizes petroleum liquids (DFO) as its primary fuel source. It consists of a single generator. Otter Tail Power Co. operates the facility, which is owned by Otter Tail. Lake Preston ranks 5th out of 11 power plants in South Dakota and 164th out of 886 nationally.
Lake Preston operates within the Midcontinent Independent Transmission System Operator, Inc. (MISO) balancing authority and the MRO NERC region. The plant's latest annual generation was 86 MWh, resulting in a capacity factor of 0.0%. Financial data indicates an installed cost of $171.53 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
41.6 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
6 MWh
Latest Month
86 MWh
Annual Generation
0.0%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$184/kW
Installed Cost
$1287.0/MWh
Operating Cost
Otter Tail Power Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Lake Preston Substation · 42 kV
Substation Distance
< 10 km
Operator
Otter Tail Power Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
OTP.HETLA
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
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Last updated 2026-03-26
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