Prairie Creek Generating Station is Alliant Energy's plant at 3300 C St. SW in Cedar Rapids, Iowa. It ended coal burning on December 31, 2025. Units 1 and 2 are retired, Unit 3 (50 MW) is converting to natural gas, and Unit 4 (148.8 MW) continues on gas. A new 94 MW Cedar River Generating Station of five gas-fired engines is planned on the site for June 2027.
Mapped infrastructure geometry associated with this asset.
EIA plant 1073 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 3 | Conventional Steam Coal | Operating | 50 | Unknown |
| 4 | Natural Gas Steam Turbine | Operating | 148.8 | Unknown |
| 1 | Conventional Steam Coal | Retired | 14.6 | Unknown |
| 2 | Conventional Steam Coal | Retired | 23 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 14.6 MW 3.6 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Apr 1997 Retirement: Dec 2025 | Operating |
| 2 | 23 MW 18.4 MW summer | Conventional Steam Coal Subbituminous Coal · ST | May 1951 | Operating |
| 3 | 50 MW 29.3 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Oct 1958 Retirement: Dec 2025 | Operating |
| 4 | 148.8 MW 111.7 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Apr 1967 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Drag organizations to explore the network. Select a node to pin its details and available page link.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Ottumwa | 725.9 MW | IA | |
| Marshalltown Generating Station | 708.8 MW | IA | |
| Emery Station | 602.8 MW | IA | |
| Upland Prairie | 299.3 MW | IA | |
| Burlington (IA) | 290.8 MW | IA | |
| Wever Solar (150MW) | 249 MW | IA | |
Project milestones and public references behind the asset profile.
EIA-860 lists generator 2 with this operating date.
EIA-860 lists generator 3 with this operating date.
EIA-860 lists generator 4 with this operating date.
EIA-860 lists generator 1 with this operating date.
Coal-fired units stopped burning coal
Converting to natural gas in early 2026
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Prairie Creek reports 50 MW coal + 148.8 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Prairie Creek is a Natural Gas Steam Turbine, Conventional Steam Coal facility in Linn County, IA, participating in the MISO market.
Prairie Creek is in Linn County, IA, inside the MISO balancing area.
Prairie Creek is operated by Interstate Power and Light Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Prairie Creek reported 52.2 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Prairie Creek ranks #106 of 259 operating plants of the same technology nationally. It ranks #2 of 14 in IA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
