3. Assessing the impact of the ESSs on electricity grid systems

Activity 3 will assess the potential grid impact and benefit of the ESS in the ports.

3.1. Inventory of shore power facilities and potential needs for energy storage in relevant ports

This task will include an analysis of the grid connection setup, available grid capacity and the grid reinforcement possibilities. In addition, this task will look at the regulatory opportunities and constraints in the two ports.


3.2. Assessment of grid stabilizing ancillary services

This sub-activity will focus on the evaluation of the ability and potential of the ESS to provide grid stabilizing ancillary services. Including, peak shaving, frequency support, potential to adjust peak electricity production with peak use, and potentially voltage stabilization.


3.3. Cost-benefit analysis (CBA)

This sub-activity will estimate the costs and benefits of installing ESS’s for the ferry operator and the ports. For instance, the price of electricity in the ports differ greatly depending on the country. Despite the EU Energy Taxation Directive 2003/96/EC1, lining out that Member States shall impose taxation on energy products and electricity. At the Port of Kiel, the German Renewable Energy Act contribution is a major cost driver for shore power, resulting in renewable energy general tax of 0.06 EUR/ kwh. However, in the Port of Gothenburg, vessels connected to an OPS instead get a discounted port charge. The tax on onshore power has been reduced in Sweden for a number of years and is currently 0.5 öre (0.05 euro cent) per kWh.