Creston Solar (50 MW) — Plant Summary
- EIA Plant ID
- 67536
- Capacity
- 50 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Union, IA
- Operating Since
- 2024
- Generators
- 1
- Operator
- Interstate Power and Light Co
- Parent Company
- Alliant Energy
- Annual Generation
- 97,004 MWh
- Capacity Factor
- 22.1%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Creston Solar (50 MW)
OperatingSolar
Ranked #7 of 31 Solar plants in IA#1355 of 7447 nationally
50 MW Solar operating in Union, IA — Midcontinent Independent Transmission System Operator, Inc..
EIAGEM
50 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2024
Operating Since
Location
Coordinates
41.0707, -94.3185
County
Union, IA
Nearby Plants
- Creston School Customer Hosted SolarSolar1.4 MW · 4.7 km
- Summit LakeNatural Gas118.7 MW · 5.4 km
- Southern Hills Wind FarmWind254.1 MW · 10.6 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Interstate Power and Light Co | Interstate Power and Light Co | — |
| Owner(s) | Interstate Power and Light Co | Alliant Energy | — |
| Status | Operating | operating | — |
Ownership Chain
About
Creston Solar is a 50 MW solar photovoltaic power plant located in Union County, Iowa. The plant began operating in 2024 and is owned by Alliant Energy and operated by Interstate Power and Light Co. It consists of a single generator utilizing single-axis tracking technology. Creston Solar ranks as the 7th largest solar plant in Iowa out of 31, and 1148th nationally out of 7108.
The plant's latest annual generation was 97,004 MWh, resulting in a capacity factor of 22.1%. Creston Solar operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the Midwest Reliability Organization (MRO) NERC region. Financial data indicates an installed cost of $1996 per kW, with data sourced from FERC filings.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Interconnection Queue1 projectBeta
OperationalSolar50 MWMISOLBNL + Live
Generation
3.9K MWh
Latest Month
97.0K MWh
Annual Generation
22.1%
Capacity Factor
Financial DataBeta
Source: FERC Form 1HIGH
$1,996/kW
Installed Cost
$4.5/MWh
Operating Cost
Interstate Power and Light Company
Reporting Utility
Annual Capital & Operating Expenses
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Creston East Substation · 69 kV
Substation Distance
0.088 km
Operator
ITC
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
ALTW.CRSTNSOL
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
Curated node match
News & Articles (10)Beta
Hazards·wildfire
Red Flag Warning: Sac; Calhoun; Crawford; Carroll; Greene; Boone; Audubon; Guthrie; Dallas; Polk; Cass; Adair; Madison
Red Flag Warning issued March 21 at 9:44AM CDT until March 21 at 10:00PM CDT by NWS Des Moines IA
Red Flag Warning (hazard)
NWS Des Moines IA·5 days ago
General
Alliant Energy Brings Solar, Wind, and Energy Storage Projects To Iowa
Alliant Energy maintains a balanced mix of energy resources that keep costs low and lights on for 1 million customers in Iowa and Wisconsin.
The Business Download |·2 weeks ago
Industry·corporate
Alliant Energy Brings Solar, Wind, and Energy Storage Projects To Iowa
Alliant Energy maintains a balanced mix of energy resources that keep costs low and lights on for 1 million customers in Iowa and Wisconsin.
Alliant Energy (operator)
The Business Download |·2 weeks ago
General
Alliant Energy battery project in Sheboygan underway after delays
Alliant Energy's 99-MW battery storage project in Sheboygan faces delays but could be online by year's end, boosting clean energy capacity.
Finance & Commerce·4 weeks ago
Last updated 2026-03-21
View all 10 articles