# O'Brien Wind

MISO asset profile · https://askthegrid.com/assets/facilities/o-brien-wind

## Current generation inventory

EIA plant 60326 · Inventory reporting month: 2026-08.

- wind: 250.3 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): -95.62431, 43.200421
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2022-08-03 02:51:59+00:00
- Map prepared: 2026-10-10T23:05:23.291731+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

O'Brien Wind is a 250 MW onshore wind farm in northern O'Brien County, Iowa, owned by MidAmerican Energy. It has 104 Siemens turbines, 91 SWT 2.415 MW machines and 13 SWT 2.346 MW machines, and forms part of MidAmerican's Wind X development with the Ida Grove project. Mortenson served as general contractor. MidAmerican reported construction complete in January 2017, with the turbines commissioned in early December and delivering electricity to its customers.

## Reviewed metrics

- **Nameplate capacity:** 250.3 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 60326 — plant-60326

## Facts

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

## Related parties

- **EPC contractor / construction contractor:** Mortenson — epc_contractor ([source](https://www.mortenson.com))
- **Equipment supplier:** Siemens — equipment_supplier ([source](https://www.siemens.com))

## Sources

- [energetskiportal.com](https://www.energetskiportal.com/midamerican-adds-551mw-in-iowa/) — energetskiportal.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/o-brien-wind
Website: [MidAmerican Energy](https://www.midamericanenergy.com)

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