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55.2 MW Hydro operating in Marion, IA
55.2 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
2021
Operating Since
Coordinates
41.3697, -92.9808
County
Marion, IA
Nearby Plants
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Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Western Minnesota Mun Pwr Agny | Western Minnesota Municipal Power Agency | — |
| Owner(s) | Western Minnesota Mun Pwr Agny | Missouri River Energy Services | — |
| Status | Operating | operating | — |
The Red Rock Hydro Plant is a 55.2 MW hydroelectric facility located in Marion County, Iowa. The plant began operating in 2021 and utilizes conventional hydroelectric technology. It is owned by Missouri River Energy Services and operated by Western Minnesota Municipal Power Agency. The facility houses two generators and ranks as the second-largest of four hydroelectric plants in Iowa, and 284th out of 1464 nationally.
In its most recent year of operation, the Red Rock Hydro Plant generated 179,271 MWh of electricity, achieving a capacity factor of 36.8%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority, which falls under the North American Electric Reliability Corporation (NERC) region designated as MRO.
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
Political Subdivision
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
8.8K MWh
Latest Month
179.3K MWh
Annual Generation
36.8%
Capacity Factor
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2021
$1,415/kW
Est. Construction Cost
Total estimated cost: $78.1M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Market Position
ISO/RTO Market
MISO
LMP Node
MEC.RRHP_U1
Pricing Hub
MINN.HUB
Alt. Hub / Zone
ILLINOIS.HUB
Location Type
Generation Node
Node Source
Curated node match
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-14
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