Aberdeen CT — Plant Summary
- EIA Plant ID
- 3338
- Capacity
- 143 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine, Petroleum Liquids
- Status
- Operating
- Location
- Brown, SD
- Operating Since
- 1978
- Generators
- 4
- Operator
- NorthWestern Energy - (SD)
- Parent Company
- —
- Annual Generation
- 29,667.01 MWh
- Capacity Factor
- 2.4%
- Balancing Authority
- Southwest Power Pool
- ISO/RTO
- SPP
- NERC Region
- MRO
Aberdeen CT
OperatingDistillate OilNatural GasHybrid
Ranked #5 of 11 Natural Gas plants in SD#835 of 2009 nationally
143 MW Natural Gas Fired Combustion Turbine (114 MW) + Petroleum Liquids (29 MW) operating in Brown, SD — Southwest Power Pool
EIAWD
143 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Petroleum Liquids
1978
Operating Since
Location
Coordinates
45.4299, -98.4940
County
Brown, SD
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | NorthWestern Energy - (SD) | — | — |
| Owner(s) | NorthWestern Energy - (SD) | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Aberdeen CT power plant, located in Brown County, South Dakota, has a total capacity of 143 MW across four generators. The plant, which began operating in 1978, is primarily fueled by natural gas, but also has the capability to use petroleum liquids. It is operated by NorthWestern Energy - (SD). Aberdeen CT is a hybrid plant utilizing Natural Gas Fired Combustion Turbine technology.
Aberdeen CT operates within the Southwest Power Pool (SPP) balancing authority and the MRO NERC region. In terms of size, it is ranked as the 5th largest power plant out of 6 in South Dakota, and 832nd nationally out of 945 plants. The plant's latest annual generation was 29,667 MWh, resulting in a capacity factor of 2.4%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Southwest Power Pool
Grid Voltage
34.5 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
2.4K MWh
Latest Month
29.7K MWh
Annual Generation
2.4%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Aberdeen Substation
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
SPP
Pricing Hub
SPP North Hub
Node Source
EIA-860 direct report
News & Articles (10)Beta
Grid·capacity addition
NorthWestern Conversion Facility Would Help Meet SD's Increasing Energy Demands
NorthWestern's proposal for an energy conversion facility near Aberdeen is to help meet increasing demands.
NorthWestern (developer)Aberdeen (other)
Aberdeen Insider·4 months ago
Grid·capacity addition
NorthWestern Energy plans second natural gas plant in Aberdeen as electricity demand grows
NorthWestern Energy is planning to build a second natural gas plant to generate electricity in Aberdeen. The company has filed a notice of...
NorthWestern Energy (developer)Aberdeen (other)
South Dakota Searchlight·4 months ago
Grid·capacity addition
NorthWestern Energy plans second natural gas plant in Aberdeen as electricity demand grows
NorthWestern Energy is planning to build a second natural gas plant to generate electricity in Aberdeen.The company has filed a notice of...
NorthWestern Energy (developer)Aberdeen (other)
News From The States·4 months ago
Grid·outage
Wiring Mixup Blamed For South Dakota Government's Summer Network Outage
Power failures at the state's main data center left South Dakota's government systems offline for nearly two days this summer.
South Dakota (other)
Aberdeen Insider·4 months ago
Last updated 2026-03-14
View all 10 articles