# Whispering Willow Wind Farm - East

MISO asset profile · https://askthegrid.com/assets/facilities/whispering-willow-wind-farm-east

## Current generation inventory

EIA plant 56355 · Inventory reporting month: 2026-08.

- wind: 199.7 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -93.20639, 42.630513
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-01-25 04:37:37+00:00
- Map prepared: 2026-10-10T02:28:24.342308+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Whispering Willow Wind Farm - East is a 199.7 MW onshore wind turbine plant in Franklin County. Whispering Willow East is a 200 MW wind farm with 121 turbines in Franklin County, Iowa, in service since 2009 and one of Alliant Energy's three wind farms in the county. The site was later expanded with the 200 MW Whispering Willow North project, and the East farm is undergoing improvements to enhance performance and extend its life.

## Reviewed metrics

- **Nameplate capacity:** 199.7 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 56355 — plant-56355

## Facts

- **Technology:** Onshore Wind Turbine
- **Operator:** Alliant Energy

## Related parties

- **Owner / operator:** Alliant Energy — owner ([source](https://www.alliantenergy.com))

## Sources

- [alliantenergy.com](https://www.alliantenergy.com/our-energy/wind/iowa-wind/whispering-willow-east) — alliantenergy.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/whispering-willow-wind-farm-east
Website: [Alliant Energy](https://www.alliantenergy.com)

Source: Ask the Grid — https://askthegrid.com/