Call for entries from companies and consortia interested to undertake a study for the OWA Foundations Technical Working Group (TWG-F) to consider different decommissioning strategies for offshore wind (OSW) monopile foundations.

The main objective of this study is to undertake a feasibility assessment to compare the pros and cons of both full removal and partial removal of monopile foundations to understand the potential impacts of OSW decommissioning and repowering, from both a technical and an environmental perspective.

The deadline for clarification questions has passed. Answers can be found in the tender documents below.

The closing date to receive tender submissions is 2 October 2025 at 13:00 BST.

All tender submissions should be sent electronically, by their respective deadlines, to alicia.stammers@carbontrust.com and maria.gonzalez-martin@carbontrust.com.