The Port of Kiel commissioned Siemens to build Germany’s largest shore power system to date. With a power of 16 megavolt amperes (MVA), the Siharbor solution will supply two ships at the same time with certified eco-power, for the first time.
This will reduce annual CO2 emissions by more than 8,000 tons. The system is expected to go into test operation within the 2020 cruise ship season. 32 different cruise ships stopped in 174 times at the port facilities in 2018.
By building this new shore power system we will actively support the climate objectives of the Schleswig-Holstein state capital. The shore connection system lets us draw electricity from renewable energy sources, both for cruise ships docked at the Ostseekai and for the ferry at the Schwedenkai
stated Dr. Dirk Claus, managing director with the Port of Kiel.
The Siemens installation includes one substation with four Geafol cast resin transformers, four air-insulated medium-voltage Nxair switchgears as well as one 16-MVA frequency converter. The cast resin transformers with a rated power of six and 16 MVA are designed to work during challenging environmental conditions.
The new system will also have a frequency converter and a software for central controlling of the two berths. With the system, two medium-voltage networks with different frequencies can be connected. In this case the local distribution grid with 50 Hz and the ship’s onboard electrical system with 60 Hz. The so-called ‘Siplink’ system, synchronizes both networks and takes over the power supply automatically within a few minutes. In addition, it coordinates the energy supply of the ships’ two networks so that power can be supplied to both at the same time.
With its “Master Plan for 100% Climate Protection”, the City of Kiel has an ambitious roadmap to be CO2-neutral by 2050. The new shore power system at the Port of Kiel aims to support this goal with the reduction in CO2 emissions. The shoreside power supply installed by Siemens in the spring of 2019 at the Norwegenkai has already started operations. To date, it has helped cut CO2 emissions by approximately 1,000 tons.