List of the 100 largest US wind farm developers [2025]

Description

List of 5 wind farm developers in the United States

Wind power is the second most common renewable energy source after solar power. It is, therefore an important asset for the United States, where a significant proportion of total energy is generated by wind farms. The North American wind energy market is therefore large and growing. An important part of (renewable) energy markets is always project developers. This article presents 5 well-known wind energy project developers from the United States.

1. Invenergy (Chicago, Illinois)

Invenergy is a developer and operator of renewable energy solutions based in Chicago, Illinois. Its asset portfolio is diverse and the company has expertise not only in wind but also in solar, gas, energy storage and clean water. Although Invenergy operates globally and has several offices around the world, its main focus is in the United States. In total, the company has developed 192 projects with an installed capacity of over 29,000 MW. 120 if these projects are wind farm projects with a total capacity of more than 13.900MW.

Update: Invenergy and energyRe have jointly submitted a bid for a 2.4GW offshore wind project, named Leading Light Wind. This project stands out as the sole American-led initiative in the New York Bight. Additionally, Invenergy is now active in the green hydrogen market – by using energy from an Invenergy solar plant in Illinois, green hydrogen will be produced. 

2. Enel Green Power (Andover, Massachusetts)

Enel Green Power is one of the largest multinational green energy companies. Its North American subsidiary is a major player in the US, Canadian and Mexican markets, with more than 1,300 power plants planned and installed on five continents, representing an installed renewable energy capacity of about 64 GW of wind, hydro, solar and geothermal power. Enel Green Power’s North American headquarters is in Andover, Massachusetts. Enel is a founding member of RES4MED (Renewable Energy Solutions for the Mediterranean and Beyond), an association created in 2012 to promote renewable energy.

3. Cielo Wind Power (Austin, Texas)

Cielo Wind Power is a renewable energy developer based in Austin, Texas. As its name suggests, the company focuses primarily on wind energy and describes itself as “the most experienced wind farm developer in the Americas”. In business for almost 30 years, Cielo Wind has installed over 1,600 wind turbines and has a portfolio of over 3,000 MW of developed capacity.

Update: Cielo Wind Power has announced the start of construction of the Bug Tussle Wind Ranch in Lamar and Fannin Counties. The project is expected to be completed in 2026 and represents a $300 million investment. The project will not require the use of water or chemical/air waste streams to generate electricity. The turbines will be manufactured in the United States and are expected to be partially financed through the use of federal infrastructure tax credits.

4. Acciona Wind Energy LLC (Chicago, Illinois)

Acciona Wind Energy LLC is part of Acciona, one of the world’s largest and most important renewable energy companies. Acciona is a global developer with a diverse portfolio of assets, including wind energy. The company develops onshore and offshore wind projects and currently operates more than 1,000 MW of wind energy projects. This adds up to around 6,500 wind turbines installed by the company.

Update Acciona Energia successfully concluded its inaugural hybrid renewable energy project. This innovative facility combines a 36MW wind component with a 29MW solar plant, seamlessly integrated into the existing Escepar wind farm site in Spain. The project covers extensive areas in the municipalities of Villalba del Rey and Tinajas in Cuenca.

5. Clearway Energy Group (San Francisco, California)

Clearway Energy Group is one of the largest players in the United States, with more than 11.8 GW of renewable energy projects in operation. Its biggest asset is wind power, which accounts for 3.5 GW of installed capacity. In total, Clearway Energy has over 350 turbines in its operating fleet across 12 US states. It also has solar and energy storage projects across the US. 

Update: Clearway announced that it has signed a 25-year PPA with Puget Sound Energy for the Haymaker Wind Farm. The 315 MW wind farm is under development in Wheatland and Meagher Counties, Montana. When fully operational, the facility will generate enough electricity to meet the annual needs of approximately 116,000 homes. Construction of the Haymaker Wind project is expected to begin in 2026, with commercial operation expected to begin in 2028.

Wind farm developers in the United States

Almost every large-scale renewable energy installation in the United States is based on the work of a renewable energy developer. Developers acquire land, install PV panels or wind turbines, connect the system to the grid, and then sell it to renewable energy investors. Our list is the most comprehensive database of wind farm developers in North America and provides an excellent overview of companies with a pipeline of renewable energy projects.

Columns included in the list of the Wind farm developers in the United States

• • Company data (Company Name, Legal form, State of origin)
  • Contact details (Address, City, Postcode, URL, E-Mail, Phone, Management)
  • Area of activity 
  • Special Focus (IPP, PPAs, Repowering)
  • Further information (Regional Focus, Founding year, installed capacity in MW)

Picture Sources: Zhang Fengsheng, Andrew Dawes