The ports of the Programme area do not have a common model for environmental planning and energy efficiency and adopt non-coordinated mitigation measures with an uneven result in terms of environmental protection. CLEAN BERTH intends to strengthen institutional capacity and cross-border governance of the ports of the Program Area. The aim is to improve their environmental and energy performance. In particular, a model of cross-border plan for environmental sustainability and port energy efficiency will be developed and declined through an ad hoc plan for each port (WP3.1) to be tested in concrete pilot actions, with tangible results (WP3.2). On the basis of what learned in WP3.1 and WP3.2, the ports of the Program Area will sign a Protocol for a joint cross-border cooperation strategy and harmonisation of policies in the medium and long term (WP3.3). This will benefit neighbouring citizens and those living in the municipalities where commercial airports are located. No project so far has ever brought together all ports of the Programme Area for a joint cross-border strategy.