Ecological Trade-offs of Green Energy Infrastructures in Marine Environments: Balancing Sustainability and Biodiversity

Abstract

Against the backdrop of global energy transition towards sustainability, the deployment of green energy infrastructure, such as offshore wind farms, tidal and wave energy devices, is rapidly expanding across marine environments. This paper explores the dual ecological impacts of these facilities on marine ecosystems, synthesizing existing research to highlight both constructive and detrimental outcomes. We document how green energy installations can enhance marine biodiversity through artificial reef effects, shelter provision, and de facto marine protected areas, while simultaneously identifying challenges such as habitat disruption, noise pollution, and chemical leakage. Through case studies including Horns Rev (Denmark), Jiangsu Dafeng (China), and La Rance (France), we demonstrate context-dependent ecological responses and the importance of spatial planning in mitigating adverse effects. Our analysis also underscores the need for integrated assessment frameworks that balance environmental, economic, and social dimensions. The findings emphasize that while green energy development holds significant potential for ecosystem restoration, its long-term success hinges on adaptive management strategies and policies that harmonize energy objectives with marine conservation imperatives, ultimately advancing the broader goal of sustainable coexistence between human energy needs and marine biodiversity.