Sustainable solutions to repurpose wind turbine blades for offshore applications

The growing population and advancement in industry have increased energy demand and intensified concern for carbon emissions, generally originating from fossil fuels. To address this issue, many nations have been developing wind turbine farms in both onshore and offshore sectors as wind energy has emerged as a sustainable alternative to fossil fuels, helping to address CO2 emissions. Offshore wind turbines, which have gained traction in the past three decades, are becoming further popular due to their potential for better output and wider available area for installation. However, given wind turbines’ 20–25-year lifespan, accumulating decommissioned blades, generally made of non-biodegradable carbon-reinforced composites or Glass Fibre Reinforced Composite blades at the end of their life service would be a significant challenge that requires thorough evaluation.

Many researchers have come up with ideas for repurposing these blades in various applications. However, considering their properties, such as unique geometry, excellent strength compared to the density, and high corrosion resistance, it appears that these blades are capable of reuse in the offshore industry.

To assess the importance of this issue, this paper aims to provide an overview of past turbine installations and forthcoming trends, study proposals for repurposing, and finally outline a proposal for repurposing in the offshore industry. Additionally, it discusses necessary assessments to understand the possibility of the proposal in engineering prospect. In the end, the paper estimates the carbon savings achievable through repurposing, highlighting the importance of this approach for sustainability.