Query
Walnut Wind Farm
Type
Entity Briefing
Entity
Walnut Wind Farm
Technology
wind
Generated
2026-10-17T20:29:43.512Z

Briefing on Walnut Wind Farm

Entity Briefing
Generated Oct 17, 2026·Dataset freshness not reported
165 MW
Capacity
Operating
Current status
2008
Operating since
1
Generators
40.3%
Capacity factor
584 GWh
Annual generation
Briefing/plantOperating

Walnut Wind Farm is a 165 MW Onshore Wind Turbine asset in MISO (Midcontinent), currently Operating.

Walnut Wind Farm is reported in Iowa since 2008 under Berkshire Hathaway. Available operating and financial measures include 40.3% capacity factor and 584 GWh annual generation; $1938/kW reported CapEx.

Location
Pottawattamie, Iowa
Technology
Onshore Wind Turbine
Owner / parent
Berkshire Hathaway
Operator
MidAmerican Energy Co
Grid
MISO (Midcontinent)
Plant ID
56811

What stands out

1

Walnut Wind Farm is a 165 MW Onshore Wind Turbine asset in Iowa with status Operating.

2

Latest annual operating measures report 40.3% capacity factor and 584 GWh annual generation.

3

Available financial measures include $8.1/MWh OpEx, $1938/kW CapEx.

4

Latest linked story: “Wind Power: New Shade of Green Dominates Iowa Landscape, Part 2” (The Atlantic, 2009-08-11).

Market and operating context

ISO / market
MISO (Midcontinent)
Balancing authority
Midcontinent Independent Transmission System Operator, Inc..
NERC region
MRO
State rank
#36 of 123
National rank
#451 of 1,442

Why it matters

For this asset in MISO (Midcontinent), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.