Climate Change Research ›› 2022, Vol. 18 ›› Issue (4): 492-502.doi: 10.12006/j.issn.1673-1719.2021.237

• Greenhouse Gas Emissions • Previous Articles     Next Articles

Economical analysis of vessels’ shore power usage

TAO Xue-Zong(), WANG Qian-Yi, LI Han-Qing   

  1. College of Transport and Communications, Shanghai Maritime University, Shanghai 201306, China
  • Received:2021-10-09 Revised:2021-12-15 Online:2022-07-30 Published:2022-02-09


A mathematical model was constructed to analyze the economy of vessels’ shore power usage. In this model, a number of factors relevant to government policy, vessel operation, and port operation were considered. Additionally, both equivalent annual cost analysis and scenario analysis were employed. Based on this model, a case study was finished by taking a typical container vessel operated between Europe ports and Shanghai Port (particularly Yangshan phase III terminal). The results show that if all else under the reference scenario is held constant and no subsidy is provided, the cost of using shore power by vessels would definitely be higher than that of using auxiliary power, regardless of whether environmental protection tax (EPT) is levied. Then shipping companies would face uneconomical situation when they use shore power in this case. To make the use of shore power is economical, the vessel’s residual life should not be shorter than five years, or the subsidy standard should be higher than or equal to CNY 0.55 per kW∙h. To meet same requirement, the increase of EPT rate should not be lower than 458% of the assumed rate if only EPT is levied without subsidy, or the utilization rate of shore power should be bigger than or equal to 39%, or the supply time of shore power should be longer than or equal to 11.8 hours. However, it is almost impossible for shipping companies to use shore power if the charging standard of shore power is greater than or equal to CNY 1.73 per kW∙h, or the fuel consumption intensity is below 158.70 g/(kW∙h), or the price of compliant fuel oil is lower than CNY 2841 per t.

Key words: Shore power, Economical analysis, Subsidy, Environmental protection tax, Scenario analysis

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