Multi-service charging station and/ or onshore energy storage at port for electric ferry– a case study from Norway

Abstract

Norway has ambitious and clear goals for transport policy. Low and zero emission technology are required also for cargo road transport and ferry services. Electric ferry propulsion and electric trucks require high charging power. Moreover, charging of ferries will demand high power for only short intervals between crossings. We investigate options to improve the net present value of the charging infrastructure investments through onshore battery energy storage and/or sale of energy for charging electric vehicles. We found that a stationary Li-ion battery at the ferry dock reduce peak power demand, but the ferry charging system has a negative net present value. The results indicate that integrated planning of several modes of transport using the same energy carrier changes the net present value from negative to positive.