Marshalltown Generating Station
2115 East Nevada Street, Marshalltown, IA 50158Plant Summary Information
Marshalltown Generating Station is ranked #2 out of 279 power plants in Iowa in terms of total annual net electricity generation.
Marshalltown Generating Station is comprised of 5 generators and generated 617.3 GWh during the 3-month period between January 2025 to April 2025.
| Plant Name | Marshalltown Generating Station |
|---|---|
| Utility Name | Interstate Power and Light Co |
| Location | Marshall County, IA |
| Initial Operation Date | April 2017 |
| Last Update | Apr 2025 |
| Annual Generation | 3.6 TWh |
| Annual Consumption | 23.7 M MMBtu |
| Ranked #331 out of 12,299 Power Plants Nationwide | |
| Ranked #182 out of 2,221 Natural Gas Power Plants Nationwide | |
| Ranked #2 out of 279 Iowa Power Plants | |
| Ranked #1 out of 50 Iowa Natural Gas Power Plants | |
| Fuel Types | Natural Gas |
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Monthly Net Generation for Marshalltown Generating Station
Marshalltown Generating Station Details
| Summary Information | |
|---|---|
| Plant Name | Marshalltown Generating Station (58236) |
| Plant Address | 2115 East Nevada Street, Marshalltown, IA 50158 |
| Utility | Interstate Power and Light Co (9417) |
| Latitude, Longitude | 42.04333, -92.87278 |
| Generation Dates on File | Apr 2017 to Apr 2025 |
| Initial Operation Date | April 2017 |
| Annual Generation | 3.6 TWh |
| Fuel Types | Natural Gas |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | MRO |
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. (MISO) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Municipality |
| Ash Impoundment | No |
| Transmission / Distribution Owner | ITC Midwest LLC (56161) |
| Grid Voltage | 161.00 kV |
| Energy Storage | Yes |
| Natural Gas Information | |
| Pipeline Name | NORTHERN BORDER P L CO |
| Natural Gas Storage | No |
Generator CTG1 Details Operating April 2017
| Technology | Natural Gas Fired Combined Cycle |
|---|---|
| Prime Mover | Combined Cycle Combustion Turbine Part |
| Unit Code | MGS1 |
| Ownership | Single Owner |
| Can Bypass Heat Recovery Steam Generator | No |
| RTO ISO LMP Node Designation | ALTW.CC.MGS1 |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | ALTW.CC.MGS1 |
| Nameplate Capacity | 222.7 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 222.4 MW |
| Winter Capacity | 236.3 MW |
| Minimum Load | 90 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | April 2017 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Other Planned Modifications | No |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Generator CTG2 Details Operating April 2017
| Technology | Natural Gas Fired Combined Cycle |
|---|---|
| Prime Mover | Combined Cycle Combustion Turbine Part |
| Unit Code | MGS1 |
| Ownership | Single Owner |
| Can Bypass Heat Recovery Steam Generator | No |
| RTO ISO LMP Node Designation | ALTW.CC.MGS2 |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | ALTW.CC.MGS2 |
| Nameplate Capacity | 222.7 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 222.4 MW |
| Winter Capacity | 236.3 MW |
| Minimum Load | 90 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | April 2017 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Other Planned Modifications | No |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Generator STG1 Details Operating April 2017
| Technology | Natural Gas Fired Combined Cycle |
|---|---|
| Prime Mover | Combined Cycle Steam Part |
| Unit Code | MGS1 |
| Ownership | Single Owner |
| Duct Burners | No |
| RTO ISO LMP Node Designation | ALTW.CC.MGS2 |
| RTO ISO Location Designation For Reporting Wholesale Sales Data | ALTW.CC.MGS2 |
| Nameplate Capacity | 260.5 MW |
| Nameplate Power Factor | 0.85 |
| Summer Capacity | 221 MW |
| Winter Capacity | 224.9 MW |
| Minimum Load | 80 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | April 2017 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Natural Gas |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 12H |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Switch Between Oil And Natural Gas | No |
Generator BESS1 Details Operating October 2020
| Technology | Batteries |
|---|---|
| Prime Mover | Battery |
| Unit Code | MGPV |
| Ownership | Single Owner |
| Nameplate Capacity | 0.3 MW |
| Summer Capacity | 0.3 MW |
| Winter Capacity | 0.3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | October 2020 |
| Combined Heat & Power | No |
|---|---|
| Sector Name | Electric Utility (1) |
| Energy Source | Electricity used for energy storage |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 10M |
| Other Planned Modifications | No |
| Multiple Fuels | No |
| Cofire Fuels | No |
| Energy Storage Details | |
| Nameplate Energy Capacity MWH | 0.6 |
|---|---|
| Maximum Charge Rate | 0.3 MW |
| Maximum Discharge Rate | 0.3 MW |
| Storage Technology | LIB |
| Nameplate Reactive Power Rating | 0.1 |
| Storage Enclosure Type | CS |
| Co Located Renewable Firming | Yes |
| Load Management | P |
| Excess Wind And Solar Generation | Yes |
| Ac Coupled | Yes |
| Direct Support Of Another Unit | Yes |
| Direct Support Plant Id | 58236 |
| Direct Support Gen Id | PV1 |
| Support T D Asset | No |
Generator PV1 Details Operating February 2020
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 2.6 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 2.6 MW |
| Winter Capacity | 2.1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | February 2020 |
|---|---|
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Solar |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Other Planned Modifications | No |
| Multiple Fuels | No |
| Solar Details | |
| Fixed Tilt | Yes |
|---|---|
| Azimuth Angle | 180 |
| Tilt Angle | 25 |
| DC Net Capacity | 3.4 MW |
| Crystalline Silicon | Yes |
| Other Materials | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | No |
Marshalltown Generating Station Plant Owners
| Owner Name | Address | Generator | Ownership |
|---|---|---|---|
| We couldn't locate any owners for this plant | |||
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Nearby Power Plants
Below are closest 20 power plants surrounding Marshalltown Generating Station.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Alliant SBD 9107 JBS USA | Marshalltown, IA | 35.3 MWh | 1.5 mi |
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| Brooklyn City North Plant | Brooklyn, IA | 14.0 MWh | 30.6 mi |
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| Grinnell College | Grinnell, IA | 1.6 GWh | 21.1 mi |
| Ivester Wind Farm | Wellsburg, IA | 343.5 GWh | 20.4 mi |
| Laurel Wind Farm | Laurel, IA | 463.1 GWh | 11.5 mi |
| Marshalltown | Marshalltown, IA | 79.0 GWh | 0.7 mi |
| Michelangelo Wind 3 LLC | Huxley, IA | 8.6 GWh | 33 mi |
| Optimum Wind 3 LLC | Nevada, IA | 10.4 GWh | 32.9 mi |
| Optimum Wind 4 LLC | Nevada, IA | 10.5 GWh | 33.1 mi |
| Optimum Wind 5 LLC | Nevada, IA | 9.0 GWh | 33.2 mi |
| Optimum Wind 7 LLC | Nevada, IA | 11.0 GWh | 28.6 mi |
| State Center | State Center, IA | 75.0 MWh | 15 mi |
| Traer Wind Project | Traer, IA | 5.8 GWh | 23.5 mi |
| Venus Wind 3 LLC | Grinnell, IA | 10.3 GWh | 23.2 mi |
| Vienna Wind Farm | Marshalltown, IA | 397.6 GWh | 9.4 mi |
| Wellsburg Wind Project | Wellsburg, IA | 468.7 GWh | 24.5 mi |