Advancing Offshore Wind: Enhancing Ocean-Based Renewable Energy through Sustainable Practices and Biodiversity Conservation & Restoration

Over the past two decades, RWE has developed, constructed, and operated offshore wind projects totaling 3.3 GW across 19 sites in Europe, with approximately 20 GW under development worldwide. This experience has shaped a comprehensive approach to the responsible development of ocean-based renewable energy, supporting climate mitigation via the production of green energy rooted in four key sustainability principles, namely positive biodiversity contribution, circular economy, climate resilience, and local benefits.Within the biodiversity pillar, RWE has undertaken several initiatives to protect marine ecosystems. Examples include the installation of an artificial nesting tower for Kittiwakes at Gateshead (UK) in the context of the Dogger Bank South offshore wind project, to support a critical nesting colony, and the use of innovative vibro-piling techniques at Kaskasi (Germany) to reduce noise impacts on harbor porpoises. Through projects like our Reef Cubes project in the Baltic Sea, RWE collaborates with academic partners to create artificial habitats, thereby promoting marine biodiversity. These initiatives demonstrate RWE’s ambition to have a net positive biodiversity impact by 2030.The circular economy pillar drives projects aimed at reducing waste and reusing materials. RWE’s BladeReUse initiative transforms decommissioned blades into durable noise barriers, while the company has pioneered the installation of recyclable turbine blades at Kaskasi (Germany) and plans to extend this approach to offshore wind farms at Sofia (UK) and Thor (Denmark), closing material loops and reducing landfill waste. These initiatives reflect RWE’s commitment to achieving full circularity by 2050.RWE’s climate change strategy involves reducing emissions in alignment with 1.5°C targets. The GreenerTower initiative at the Thor project utilizes “greener steel” with reduced CO₂ emissions, contributing to RWE’s goal of climate neutrality by 2040. Additionally, dual-fuel service vessels powered by methanol and batteries, deployed in North Sea operations, reduce CO₂ emissions by up to 10,000 tons annually, advancing low-carbon marine operations.The local benefits pillar emphasizes RWE’s commitment to supporting coastal communities. At the Whitby lobster hatchery, funded by RWE through the Sofia wind farm, RWE collaborates with local fisheries to maintain healthy fish and shellfish populations, support the local fishing industry, and raise awareness of marine protection. RWE has also developed a reskilling program with the Baltic II wind farm for volunteer fishermen, enabling them to validate competencies needed to work in the offshore wind industry. RWE’s projects foster strong community relationships, ensuring long-term positive impacts.RWE’s approach adheres to the mitigation hierarchy—avoid, reduce, restore, and compensate—and aligns with international frameworks such as the UN SDGs and the Offshore Coalition for Energy and Nature (OCEaN). This presentation will present RWE’s sustainability journey. As climate impacts on oceans intensify, RWE’s adaptive management and cross-sector collaboration model offers a blueprint for scaling nature-positive solutions that are resilient, equitable, and inclusive.Through this presentation, we aim to share lessons learned, best practices, and future ambitions, contributing to the collective knowledge necessary to expand sustainable offshore wind energy as part of the global response to ocean conservation and climate resilience.Keywords: offshore wind, biodiversity, circular economy, climate resilience, local benefits, sustainable development