# Southern Hills Wind Farm

MISO asset profile · https://askthegrid.com/assets/facilities/southern-hills-wind-farm

## Current generation inventory

EIA plant 63640 · Inventory reporting month: 2026-08.

- wind: 254.1 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: 2026-10-10T22:49:53.020309+00:00
- Filed coordinate (longitude, latitude): -94.4667, 41.1113
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2022-12-01 13:52:19+00:00
- Map prepared: 2026-10-10T23:05:21.724705+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

Southern Hills Wind Farm is a 254.1 MW onshore wind turbine plant in Union County. Southern Hills is a MidAmerican Energy Company wind farm listed by the utility at 254.50 MW across Adair, Union and Adams counties in Iowa, among the renewable projects it owns. Its Southern Hills Expansion phase uses 21 Siemens Gamesa SG 4.5-145 turbines, each operating at 4.8 MW, supplied under a service and maintenance agreement of three and a half years. MidAmerican selected the turbines in August 2019.

## Reviewed metrics

- **Nameplate capacity:** 254.1 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 63640 — plant-63640

## Facts

- **Technology:** Onshore Wind Turbine
- **Operator:** MidAmerican Energy Company

## Related parties

- **Owner / operator:** MidAmerican Energy Company — owner ([source](https://www.midamericanenergy.com))
- **O&M provider / equipment supplier:** Siemens Gamesa — turbine supplier ([source](https://www.siemensgamesa.com))

## Sources

- [windpowerengineering.com](https://www.windpowerengineering.com/midamerican-selects-siemens-gamesa-turbines-for-iowa-wind-project/) — windpowerengineering.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/southern-hills-wind-farm
Website: [MidAmerican Energy Company](https://www.midamericanenergy.com)

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