Spanish renewable energy company Iberdrola Renovables has entered into a long-term agreement to sell electricity from its New Harvest wind farm to the US utilities Commonwealth Edison and Ameren Illinois.

The company will sell approximately 75% of the output of the 100MW facility located in the US state of Iowa over the next 20 years.

The project includes 50 units of the Gamesa G87 wind turbine and is expected to generate power for more than 35,000 homes.

Iberdrola Renovables said that it has already won contracts of this type for around 80% of its wind farms in the US.

This month, the company completed the construction of three new wind farms in the country, with total installed capacity of 264MW.