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24.4 MW Natural Gas Internal Combustion Engine (19 MW) + Petroleum Liquids (5 MW) operating in Jackson, IA — Midcontinent Independent Transmission System Operator, Inc..
24.4 MW
Nameplate Capacity
9
Generators
units
Hybrid (2)
Technology
Natural Gas Internal Combustion Engine + Petroleum Liquids
1956
Operating Since
Coordinates
42.0387, -90.6627
County
Jackson, IA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Maquoketa - (IA) | — | — |
| Owner(s) | City of Maquoketa - (IA) | — | — |
| Status | Operating | — | — |
Maquoketa 1 is a 24.4 MW hybrid power plant located in Jackson County, Iowa. The plant began operating in 1956 and is owned and operated by the City of Maquoketa. It utilizes nine generators with Natural Gas Internal Combustion Engine technology, and also has the capability to use Petroleum Liquids as a secondary fuel.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority. According to available rankings, Maquoketa 1 is the 23rd largest power plant out of 37 in Iowa, and ranks 1278 out of 1963 nationally. News reports indicate at least one article related to hazards at the plant.
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
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
0 MWh
Latest Month
0 MWh
Annual Generation
0.0%
Capacity Factor
CO₂ Intensity
38814 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
851 lb/MWh
SO₂
20 lb/MWh
CH₄
0.843 lb/MWh
N₂O
0.110 lb/MWh
Capacity Factor
0.0%
Annual Net Gen
0 GWh
CO₂eq
38866 lb/MWh
Subregion
MRO West
2013
$965/kW
Est. Construction Cost
Total estimated cost: $23.5M
Point of Interconnection
Nearest Substation
Maquoketa 1
Substation Distance
3.833 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
ALTW.MQOKT.ARR
Pricing Hub
MINN.HUB
Alt. Hub / Zone
ILLINOIS.HUB
Location Type
Trading Hub
Node Source
Curated node match
Last updated 2026-03-14
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