Highland Wind Project

Location:  O’Brien County, Iowa
Installed Capacity: 502.04 MW
Construction Cost: $800,000,000+
Year Commissioned:   2015

The Highland Wind Project is located within O’Brien County, Iowa and includes 214 Siemens 2.34 MW wind turbine generators (WTGs) for a total nameplate capacity of 502.04 MW. RRC provided structural engineering design for 195 of the WTG foundations on the project as well as engineering support during construction.

Structural engineering services included design and sizing of concrete, reinforcing, embedment rings, and anchor bolts for the WTG foundations to adequately resist the loadings provided by the turbine supplier. In order to provide cost-effective structural foundation designs, multiple foundation sizes based on different soil bearing pressures and groundwater conditions were utilized for the project. Additionally, RRC engineers provided support during construction and assisted with resolving field issues in a timely and effective manner resulting in client cost savings.