Pins matching tag:AlliantEnergy

EIA’s September 2026 preliminary inventory identifies Teeple Creek, plant 69940, in Allamakee County, IA, with 2.5 MW electrical generation nameplate. The listed stage is (V) Under construction, more than 50 percent complete. Operation is forecast for 2026-11; this is a preliminary survey estimate, not an achieved opening or capacity commitment.

Separate construction cost, IT power, floor area and an opening date for this building or phase have not been verified. Published campus figures do not establish independent component figures.

NextEra Energy Resources, under a long-term utility partnership with Alliant Energy (Interstate Power and Light), is developing the 150 MWac Rock Creek Solar Project paired with a 100 MW battery energy storage system (BESS) across 900 acres in Clinton County, Iowa. Located across portions of Clinton and Camanche, the hybrid clean energy center is formally certificated by the Iowa Utilities Commission under Docket No. GCU-2024-0001, providing clean electricity for up to 30,000 homes while reinforcing Eastern Iowa grid reliability.

The exact 99MW Edgewater BESS1 unit is under construction at no more than 50% completion. This is not the former coal plant or a future fully operating battery.

The Haskins Clean Solar Project is a 200 MWac utility-scale photovoltaic generation facility located near Haskins in Washington County, Iowa. Interconnecting into Alliant Energy's eastern Iowa transmission grid, the facility generates low-cost clean electricity to power more than 40,000 homes annually while providing diversified agricultural revenue and local tax proceeds for Washington County public services.

Alliant Energy (Interstate Power and Light) is developing the 100 MW / 400 MWh Marshalltown Energy Storage Project on industrial land adjacent to the Marshalltown Generating Station in Marshall County, Iowa. Reviewed by the Iowa Utilities Commission (IUC), the 4-hour battery storage system connects directly into the on-site 161 kV substation in MISO, delivering peak capacity, voltage stabilization, and renewable energy firming for the central Iowa manufacturing and agricultural processing corridor.

The Jones Clean Solar Center is a 100 MWac utility-scale solar generation facility situated near Anamosa in Jones County, Iowa. Interconnecting with Interstate Power and Light’s transmission system under MISO, the array feeds zero-emissions electricity directly into the east-central Iowa electric grid.

The Cedar Clean Solar Center is a 100 MWac utility-scale solar generation facility situated near Tipton in Cedar County, Iowa. Interconnecting with Interstate Power and Light’s transmission system under MISO, the array feeds zero-emissions electricity directly into the east-central Iowa electric grid.

The Dubuque Clean Energy Solar Center is a 100 MWac utility-scale photovoltaic installation situated across rural agricultural lands in Dubuque County, Iowa. Developed by Alliant Energy as part of its Clean Energy Blueprint, the installation feeds directly into the MISO transmission grid to deliver low-cost renewable power across eastern Iowa and the tri-state Mississippi River valley.

The Worth County Solar Project is a 135 MWac utility-scale photovoltaic generation facility located across approximately 1,100 acres of flat agricultural terrain near Northwood and Kensett, Worth County, Iowa. Interconnecting with the 161 kV regional transmission grid in MISO, the project generates low-cost clean electricity supporting northern Iowa communities and regional agricultural processors.

J3780 is a 205 MW battery storage interconnection request in Buchanan, IA. The grid operator lists its queue status as Active. The requested in-service date is 2028-06-30; this is a planning date.