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349 MW Natural Gas operating in Deuel, SD — Midcontinent Independent Transmission System Operator, Inc..
349 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Fired Combustion Turbine
Technology
2021
Operating Since
Coordinates
44.5813, -96.5653
County
Deuel, SD
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Otter Tail Power Co | Otter Tail Power | — |
| Owner(s) | Otter Tail Power Co | Otter Tail | — |
| Status | Operating | — | — |
Astoria Station is a 349 MW natural gas-fired power plant located in Deuel County, South Dakota. The plant began operating in 2021 and is owned and operated by Otter Tail Power Co, a subsidiary of Otter Tail. It utilizes a single natural gas-fired combustion turbine generator. Astoria Station ranks as the second-largest of six power plants in South Dakota, and 597th out of 945 plants nationally.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority. In its most recent year of operation, Astoria Station generated 455,359 MWh of electricity, achieving a capacity factor of 14.8%. Financial data indicates an installed cost of $572 per kW, according to FERC filings.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
17.9K MWh
Latest Month
455.4K MWh
Annual Generation
14.8%
Capacity Factor
CO₂ Intensity
1233 lb/MWh
NOx
0.250 lb/MWh
SO₂
0.006 lb/MWh
CH₄
0.023 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
13.3%
Annual Net Gen
407 GWh
CO₂eq
1234 lb/MWh
Subregion
MRO West
Gas turbine · Otter Tail Power Company · Data from 2021–2024
$610/kW
Installed Cost
$0/kW
Annual CapEx
$31.2/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
ISO/RTO Market
MISO
LMP Node
OTP.ASTORIA
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
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