Siemens today announced the commercial launch of concrete wind turbine tower technology designed to capture stronger winds at higher altitudes, resulting in more potential energy production and increased project revenue for power producers. The technology is part of an effort to expand wind power in the United States.
Siemens partnered with Wind Tower Technologies in Colorado to develop engineering and construction methodologies. The patented tower system features onsite match casting of annular precast tower segments, eliminating the need to grout the joints or provide other special surface treatments between tower sections. Onsite casting of tower segments also eliminates transportation costs associated with offsite fabrication of tower sections.
“As wind continues to establish itself as a mainstream energy source in the United States, Siemens remains focused on driving down the cost of wind power projects,” said Michael McManus, Siemens Head of Business Development and Strategy for Onshore Americas. “By match casting tower segments onsite, we are able to simplify and streamline the entire tower construction process, reducing costs throughout.”
The precast segmental concrete tower system was designed to be scalable to heights of more than 375 feet using a modular formwork design. This offers up to an additional 10 percent annual energy production compared to typical 262-foot towers.
Siemens developed the concrete tower technology through prototype testing in Texas and Iowa. In a separate project, Siemens partnered with Iowa State University on the “Hexcrete Tower for Harvesting Wind Energy at Taller Hub Heights” project, sponsored by the Department of Energy Office of Energy Efficiency and Renewable Energy.