From the perspective of achieving the dual-carbon goals,exploring solutions for multi-energy integration in water transport and port industry has attracted wide attention,taking into account the realistic demand for grid security and stability of new power systems in the context of energy transition.After reviewing relevant policies and international and domestic typical cases,several technical paths to realize in-situ balance of multi-energy integration in ports have been sorted out,and put forward the planning suggestions for building smart micro-grids in projects.It is suggested to combine the natural conditions of the region where the project port is located,such as wind and solar resources,topographic conditions,the current situation and planning of local infrastructure construction,the operation of the port,and the information of the relevant shipping routes,to choose the appropriate technical paths,such as power optimization tools,energy storage system,hydrogen,etc.,and to give full consideration to the long-term development of the port,to make reasonable planning,to explore the micro-grid scheme of in-situ balancing and coordination of source-network-load-storage,and to promote the realization of observable,measurable,adjustable and controllable requirements.It is concluded that after applying the power optimization tool and rationally configuring the energy storage device,it is expected to control the ratio of maximum power to average power below 3,with an energy saving effect of more than 30%.