Through Directive 2014/94/EU, European Union (EU) has required European ports to provide facilities to enable Cold Ironing (CI) use by 2025. This new reality advances a stricter normative in terms of port emissions. This paper introduces a calculation method to estimate a specific environmental charge in ports to incentivize CI use in Short Sea Shipping. The impact of this charge on the economic performance of the vessel’s operators is assessed through Internal Rate of Return of the CI retrofitting investment in vessels. The calculation method assumes a pollutant differentiation system by considering kinds of vessel, technical features, port localization and hinterlands populations. Results show that, only when the generation of on-shore electricity is dominated by sustainable sources, the environmental charge is effective to stimulate the CI retrofitting of vessels in adverse scenarios. Sensitivity analyses determine that low gross tonnages’ vessels with longer berthing times take greater advantage from CI use.

通过第2014/94 / EU号指令，欧盟（EU）要求欧洲港口提供设施，以在2025年前实现冷熨（CI）的使用。这一新现实推动了港口排放方面更严格的规范。本文介绍了一种计算方法，用于估计港口的特定环境费用，以鼓励短途海运中的CI使用。此项费用对船舶经营人的经济绩效的影响通过对CI进行的船舶改装投资的内部收益率进行评估。该计算方法通过考虑船只的种类，技术特征，港口位置和腹地人口来假设一个污染物区分系统。结果表明，只有在陆上电力的产生由可持续来源主导的情况下，在不利的情况下，环境收费可以有效地刺激船舶的CI改造。敏感性分析确定，停泊时间较长的低总吨位船舶可从CI的使用中获得更大的优势。