Repowering of wind projects is becoming increasingly prevalent and is expected to continue to be a widespread power generating strategy in 2018. The current trend favors partial repowering, in which the existing wind turbine foundations, wind turbine towers, and electrical balance of plant systems are left in place; and wind turbine blades are replaced with new, longer blades, and at least some portion of the wind turbine drivetrain is upgraded. The integrity and capacity of the existing foundations is the most critical consideration for the long-term success of a partial repowering.
Sargent & Lundy has recent experience with 18 repowered wind projects, involving more than 1,000 wind turbines; we have a carefully considered methodology founded on both our thousands of hours of analysis across our recent projects for repowering wind turbines as well as our industry-leading depth of structural and electrical engineering experience.
Sargent & Lundy is at the forefront of providing engineering and consulting services for these projects and is pleased to release the following White Paper that highlights best practices, common issues, and insights that we have identified during recent wind repowering efforts.
Authors: Brian Connaghan, Eric DeCristofaro, Eric Soderlund, Matthew Thibodeau, and Xuan Wang – Sargent & Lundy