# Walnut Wind Farm

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

## Current generation inventory

EIA plant 56811 · Inventory reporting month: 2026-08.

- wind: 165.2 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): -95.2383, 41.4517
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2024-03-25 01:32:10+00:00
- Map prepared: 2026-10-10T23:05:24.863090+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

Walnut Wind Farm is a wind project in Pottawattamie County, Iowa, owned by MidAmerican Energy Company. enXco began construction in June 2008, the project was expanded from 100.5 MW to 153 MW, and its 102 turbines were commissioned in February 2009. GE 1.5 MW turbines were specified, enXco Service Corporation provides operations and maintenance, and MidAmerican now lists the project at 165.24 MW as part of its Iowa renewable portfolio.

## Reviewed metrics

- **Nameplate capacity:** 165.2 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 56811 — plant-56811

## Facts

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

## Related parties

- **Owner / acquirer:** MidAmerican Energy Company — owner ([source](https://www.midamericanenergy.com))
- **Developer / seller / EPC contractor:** enXco Development Corporation — developer ([source](https://www.edf-re.com))
- **O&M provider:** enXco Service Corporation — om_provider ([source](https://www.edf-re.com))
- **Equipment supplier:** GE — equipment_supplier ([source](https://www.ge.com))

## Sources

- [edf-re.com](https://www.edf-re.com/press-release/enxco-commissioning-walnut-wind-farm/) — edf-re.com · public_source — Source retained for exact-record publication review.
- [edf-re.com](https://www.edf-re.com/press-release/enxco-signs-agreement-mec-build-100-5-mw-wind-farm/) — edf-re.com · public_source — Source retained for exact-record publication review.

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

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