Maldives to Replace Costly Sea Walls With Nature-Based Coastal Defences

The Maldivian government is pivoting away from expensive traditional rock revetments to combat coastal erosion, opting instead for innovative nature-based solutions and the repurposing of construction waste. Minister of Climate Change, Environment and Energy, Ali Shareef, announced the shift during a press conference at the President’s Office. He noted that while laying large boulders has long been the standard method for shore protection, the financial burden has become unsustainable. According to the Minister, the cost for a single linear metre of rock protection could reach between USD 6,000 and USD 7,000, including mobilisation fees, just seven years ago. To address these exorbitant costs, the Ministry is prioritizing sustainable and economically viable alternatives. Minister Shareef confirmed that several projects incorporating nature-based designs are already underway, marking a strategic departure from heavy engineering toward ecological integration. This transition is being supported by rigorous research to ensure that global best practices are adapted to the unique environmental conditions of the Maldivian archipelago. The goal is to find a balance between coastal resilience and environmental preservation. Recognizing the urgency of the issue, President Dr Mohamed Muizzu has directed the Ministry of Finance and Public Enterprises to secure financial assistance, including research grants, for a formal study. This investigation will specifically explore how construction and demolition waste can replace the boulders typically required for harbour construction and shoreline protection. Beyond domestic research, the Ministry plans to engage with international firms specializing in advanced coastal protection technology. This comprehensive approach signals a long-term commitment to protecting the nation's vulnerable shores through modern, cost-effective, and environmentally friendly infrastructure.