Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO476: End-of-life strategy for Multi-(re)use scenarios for existing offshore wind foundations and electrical infrastructure: a conceptual, economical, legal and structural reliability study
Ozlem Yilmaz Ceyhan, Senior Engineer Blue Energy, IMDC
Abstract
This project explores the feasibility of repurposing existing offshore infrastructure—specifically monopile foundations and electrical equipment—as an alternative to full decommissioning of offshore wind farms. The aim is to enable hybrid renewable energy generation (wave and tidal energy, floating solar PV) and energy storage technologies, thereby reducing capital costs, extending infrastructure lifespan, and accelerating the energy transition. Reusing installed components also minimizes environmental impact and regulatory complexity. The project is structured into three work packages: * WP1 reviews current technologies and applies a Multi-Criteria Decision Analysis (MCDA) to evaluate options based on constructability, operability, energy potential, business case, technology readiness level (TRL), and legal/environmental readiness. It includes a preliminary legislative screening and gap analysis. * WP2 conducts a feasibility study, assessing energy resources, constructability, operability, legal requirements, and environmental impact. It also develops a business case, including the Levelized Cost of Energy (LCOE) to evaluate economic viability. * WP3 focuses on technical validation through hydrodynamic testing at the Coastal & Ocean Basin in Oostende, and assesses the structural reliability of monopiles, including fatigue analysis of secondary steel and new connection designs. The performed Multi Criteria Decision Analysis (MCDA) identified tidal kite systems (e.g., Seaqurrent, Minesto) and wave energy converters (Wavehexapod, Wave Star, Sigma Energy) as preferred technologies. To enhance the business case, the integration of floating solar, energy storage, and radar/lidar systems is recommended. Additional findings show that monopiles and wind farm layouts influence water flow, with average current velocities changing by ±3% and maximum velocities by ±8%. These insights, combined with environmental and legal assessments, support informed decisions for sustainable, technically feasible offshore energy solutions. During this last phase of the project, the project partners are investigating the economical and financial viability for such re-purpose and energy integrate concept design.
