Wind Energy

Wind VIII Construction

Project Background
The Wind VIII project, a 448-turbine, 1,050-megawatt expansion to MidAmerican Energy’s current wind portfolio, comprises the Highland, Lundgren, Macksburg, Vienna II and Wellsburg wind farms. The Vienna II project, a 19-turbine expansion of the Vienna wind farm, was placed in-service in December 2013. The Lundgren, Macksburg and Wellsburg wind farms are expected to be placed in-service by year-end 2014. The Highland wind farm is scheduled for completion by year-end 2015. The Lundgren wind farm is being constructed by Wanzek Construction, and the Highland, Macksburg and Wellsburg wind farms are being constructed by M.A. Mortenson Construction.

The Wind VIII project will utilize Siemens’ 2.3-megawatt wind turbines. All of the blades for the expansion will be manufactured at Siemens’ Fort Madison, Iowa, facility, while the hubs and nacelles will be manufactured at Siemens’ Hutchinson, Kan., facility. The steel towers are being manufactured at various locations in the United States, including Texas, Colorado and Wisconsin.

When the Wind VIII project is complete, MidAmerican Energy Company will have a total of 1,715 wind turbines representing 3,335 megawatts of wind generation capacity.

Impact on the Economy
The Wind VIII project will provide more than $3 million in landowner payments each year and more than $360 million in additional property tax revenues over the next 30 years. The expansion will be constructed at no net cost to the company’s customers and will help stabilize electric rates over the long term. Approximately 1,000 construction jobs will be added to Iowa’s economy during the two-year construction period, and approximately 40 new permanent jobs will be added when the expansion is complete.

Construction Update
Highland: Nineteen wind turbine foundations were completed prior to stopping work for the winter. Construction resumed at the project site in April 2014. Upcoming work includes excavating foundations and installing access roads. The laydown yard was installed April 24, 2014. Turbine component delivery and assembly is scheduled for 2015.


First rotor installed at the Lundgren wind farm
Lundgren: Thirty wind turbine foundations were completed prior to stopping work for the winter. Construction has resumed at the project site. Upcoming work will start with road and electrical construction activities, foundation excavation, concrete pours and backfilling. Wind turbine components are expected to begin arriving by the end of May 2014, with turbine erection activities commencing shortly thereafter.

Macksburg: Eleven foundations were completed prior to stopping work for the winter. Construction has resumed at the project site. The initial construction work includes installing access roads and the laydown yard.

Wellsburg: Nine foundations were completed prior to stopping work for the winter. Construction resumed at the project site in April 2014. The initial construction work includes excavating foundations and installing access roads.

Vienna II: Project construction is complete. All 19 turbines were completed and placed in-service during December 2013. Site restoration continues and is expected to be completed by June 1, 2014.