Marshalltown is a 189 MW Natural Gas Fired Combustion Turbine asset in MISO (Midcontinent), currently Operating.
Marshalltown is reported in Iowa since 1978 under Alliant Energy. Available operating and financial measures include 4.7% capacity factor and 79 GWh annual generation; $330/kW reported CapEx.
- Location
- Marshall, Iowa
- Technology
- Natural Gas Fired Combustion Turbine
- Owner / parent
- Alliant Energy
- Operator
- Interstate Power and Light Co
- Grid
- MISO (Midcontinent)
- Plant ID
- 1068
What stands out
Marshalltown is a 189 MW Natural Gas Fired Combustion Turbine asset in Iowa with status Operating.
Latest annual operating measures report 4.7% capacity factor and 79 GWh annual generation.
Available financial measures include $38.7/MWh OpEx, $330/kW CapEx.
Latest linked story: “720MW energy center approved in Marshalltown” (Business Record, 2025-12-16).
Market and operating context
- ISO / market
- MISO (Midcontinent)
- Balancing authority
- Midcontinent Independent Transmission System Operator, Inc..
- NERC region
- MRO
- State rank
- #7 of 37
- National rank
- #787 of 2,025
Why it matters
For this asset in MISO (Midcontinent), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.
