The Cyprus Ports Authority (CPA) views its role as a regulatory body for the nation's ports as crucial for economic development. By considering the four pillars of sustainability—human, social, economic, and environmental—CPA aims to integrate advanced technology to create a sustainable, eco-friendly port infrastructure. The DECARBONLIM project, in response to EU zero-carbon regulations, involves a technical and economic study to assess the feasibility of onshore power supply (OPS) infrastructure at the Port of Limassol. This study will address the needs of all stakeholders, including CPA, port operators, and local authorities, to support economic growth and environmental targets. The findings will lead to a funding proposal for the construction and sustainable operation of OPS infrastructure, ensuring compliance with EU 2030 regulations and serving as a model for other Cypriot ports.