Diamond Trail Wind Farm
Wind power plant in Iowa County, Iowa. 252.5 MW of nameplate capacity across 1 generator, operated by MidAmerican Energy Co.
Also known as Diamond Trail · Diamond Trail Expansion · EIA plant 63641
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 252.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2020First generator online
- Operator
- MidAmerican Energy CoEIA operator ID 12341
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Iowa County, IA41.6744, −92.1642
- EIA plant ID
- 63641EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Diamond Trail Wind Farm produces
Free · EIA-923Net generation, 2025
863 GWh
862,903 MWh, final
Capacity factor, 2025
39.0%
2024: 38.0%
January to July 2026
505 GWh
Provisional
Range, 2021 to 2025
807.9–958.0
GWh a year. Low 2021, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | 45,248 | Not reported | 1 of 12 |
| 2021 | 807,936 | 36.5% | 12 of 12 |
| 2022 | 957,953 | 43.3% | 12 of 12 |
| 2023 | 818,328 | 37.0% | 12 of 12 |
| 2024 | 843,401 | 38.0% | 12 of 12 |
| 2025 | 862,903 | 39.0% | 12 of 12 |
| 2026 (provisional, partial year) | 505,306 | 39.3% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| DTWF | Onshore Wind Turbine | 252.5 | December 2020 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists MidAmerican Energy Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Diamond Trail Wind Farm
More plants operated by MidAmerican Energy Co
Questions about Diamond Trail Wind Farm
How much power does Diamond Trail Wind Farm produce?
Diamond Trail Wind Farm reported 862,903 MWh (863 GWh) of net generation in 2025, a 39.0% capacity factor on 252.5 MW of nameplate capacity. From January to July 2026 it reported 505 GWh, which is provisional.
Where is Diamond Trail Wind Farm?
Diamond Trail Wind Farm is in Iowa County, Iowa, at 41.6744, −92.1642. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Diamond Trail Wind Farm?
EIA-860M for August 2026 lists MidAmerican Energy Co as the operator (EIA operator ID 12341). The operator is not always the owner.
When did Diamond Trail Wind Farm start operating?
Its first generator began operating in December 2020, according to EIA-860M.
Does InfraMap have power prices for Diamond Trail Wind Farm?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Diamond Trail Wind Farm, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Project names from the USGS U.S. Wind Turbine Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page