Siemens awarded turbine order for Windthorst-2 wind power plant The Windthorst-2 wind power project in Windthorst, Texas, is expected to commence commercial operation in fall 2014. With 28 Siemens (SI) 2.3-MW wind turbines, the project will provide clean power to nearly 20,000 American households. A service agreement was also signed for the project and will help ensure the reliability, availability and performance of the wind turbines. A majority interest in the Windthorst-2 project was recently sold to a fund managed by BlackRock (BLK). OwnEnergy will maintain a minority ownership interest and manage its construction.