Thanks to the new shore power installation more than 33,000 litres of high quality marine diesel per month are saved in Scheveningen Harbour.

Scheveningen harbor environmentally upgrades with clean shore power

In the First Harbor in Scheveningen, Netherlands, a new shore power installation has eliminated air pollution while reducing noise and vibrations from ship engines idling at berth. Scheveningen harbor is centrally located on the Dutch coast, providing berths for more than 7,500 vessels each year. It consists of three harbor areas.

While shore power in the Second Harbor already exists for cutters, small fishing boats and pleasure vessels, a major new industrial-scale installation in the other two harbors extends capacity to many more vessels. The new shore supply system serving the First and Third Harbors is a first for the Netherlands in terms of its large scale, its technology, and its convenience for users.

Thanks to the new shore power installation, ships can stop using noisy, polluting diesel generators whilst berthed in harbor. This eliminates air pollution and reduces the noise and vibrations when ship engines are idle. On average, ships in Scheveningen Harbor consume more than 100 MWh per month via the new shore power supply. At an average of one litres per three kWh, this translates to more than 33,000 litres of high quality marine diesel per month are saved. This results in dramatic reductions of air pollution from particulate matter, nitrogen oxides (NOx) and sulphur oxides (SOx) in addition to substantial CO₂ savings

The installation of shore power in Scheveningen harbor is a major part of The Hague’s Air Quality Action Plan, which outlines what the municipality is doing together with businesses, residents, interest groups and the Dutch State to further improve the air quality in the city. Of course, only 100 per cent Dutch sustainable wind energy is used in the installation.

The system was built by Klaver Technisch Bedrijf B.V. in Obdam using a Danfoss VACON® NXC series low harmonic drive with micro grid functionality to convert grid power from 50 to 60Hz to adapt the frequency to the ship’s grids. The system has eight power outlets each with a maximum current of 250 A.

Connection pints

The system has eight power outlets each supplying a maximum current of 250 A. Six connection pints have been installed in the First Harbor for large fishing boats and freezer trawlers. The First Harbor is the centre of the fishing fleet, but there is also space for off-shore vessels, large commercial vessels, towing services and the coast guard rescue services. “The system has been successfully working for two years now, and we’ve had no problems at all with any of the Danfoss components: They’re totally reliable”, says Maarten Hektor, Managing Director, Involtum.

This video has been disabled until you accept marketing cookies. Manage your preferences here or directly accept targeting cookies.

Maarten Hektor demonstrates one of the shore power

connection points which are controlled by Involtum’s Walstroom app.

The system is equipped with a micro grid functionality which generates a 440V, 60Hz clean grid. There are eight shore connections each with its own transformer. The primary side of each transformer can be connected to 400V, 50Hz directly from the grid or 440V, 60Hz supplied from the converter depending on the grid of each ship. Every transformer has thus 2 feed-in circuit breakers: one for the 50Hz grid and one for the 60Hz grid.

Each outlet has a communication system allowing the ship’s engineer to connect and pay for power with the user friendly Walstroom app, developed by Involtum Services B.V. Walstroom works 24 hours a day and can be accessed via mobile phone, smartphone, computer or tablet. Involtum have a 10-year agreement with the Port of Scheveningen to operate a shore power system for all ships entering the port.

For more information visit

The Market Contribution is a section in which companies share their maritime endeavors or market analyses. Please contact us at for inquiries.