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15.6 MW Natural Gas Internal Combustion Engine (14 MW) + Petroleum Liquids (2 MW) operating in Emmet, IA — Southwest Power Pool
15.6 MW
Nameplate Capacity
5
Generators
units
Hybrid (2)
Technology
Natural Gas Internal Combustion Engine + Petroleum Liquids
1946
Operating Since
Coordinates
43.4028, -94.8433
County
Emmet, IA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Estherville - (IA) | — | — |
| Owner(s) | City of Estherville - (IA) | — | — |
| Status | Operating | — | — |
The Estherville power plant, located in Emmet County, Iowa, has a total capacity of 15.6 MW across 5 generators. The plant began operating in 1946 and is owned and operated by the City of Estherville. The primary fuel source is natural gas, and the plant utilizes natural gas internal combustion engine technology, with petroleum liquids also listed as a fuel. Estherville is considered a hybrid plant.
In the most recent year with available data, the plant generated 199 MWh, resulting in a capacity factor of 0.1%. Estherville operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. The plant is ranked 25th out of 37 power plants in Iowa and 1364th out of 1963 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Southwest Power Pool (SWPP)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
15 MWh
Latest Month
199 MWh
Annual Generation
0.1%
Capacity Factor
CO₂ Intensity
965 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
25 lb/MWh
SO₂
0.258 lb/MWh
CH₄
0.052 lb/MWh
N₂O
0.010 lb/MWh
Capacity Factor
0.6%
Annual Net Gen
1 GWh
CO₂eq
969 lb/MWh
Subregion
MRO West
2013
$765/kW
Est. Construction Cost
Total estimated cost: $11.9M
Market Position
ISO/RTO Market
SPP
LMP Node
WAUE.BEPM.ESTHERVILLE
Pricing Hub
SPP North Hub
Location Type
Settlement Location
Node Source
Curated node match
Last updated 2026-03-26
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