The technology group Wärtsilä has joined a consortium of key partners to form Zero Emission Services B.V. (ZES), an enterprise aimed at making inland waterway shipping more sustainable. The other founders of ZES are ING Bank, energy and technical service provider Engie, and the Port of Rotterdam Authority. The concept is supported by the Dutch Ministry of Infrastructure and Water Management.

Within the Netherlands transport sector, inland navigation accounts for 5% of carbon dioxide emissions. By switching from diesel-fueled propulsion to fully electrically powered transport, an important step can be taken towards realizing the Paris Climate Agreement goals.

The concept is based on the use of replaceable battery containers, to be known as “ZESPacks”. These will be charged using energy from renewable sources.

A network of open access charging points will be set up for exchanging depleted battery containers for ready-charged replacements, thereby keeping waiting time to a minimum. The ZESPacks are designed for multiple applications, enabling them to be utilized for temporary onshore use, such as stabilizing the local electricity grid or meeting short-term demand for electrical power.

Barge power usage varies from 500 to 1000 kW. With the help of a 2000 kWh Repack container, an inland vessel can sail for two to four hours. With two ZESPacks, a distance of 50 to 100 km can be covered.

The system is independent of the energy provider. Initially batteries will be employed but should, for example, hydrogen become a viable alternative at some point, containers equipped with hydrogen technology could supply power in the same way.

To make it easier for barge operators to sign-on to the concept, a ‘pay-per-use’ financing model has been developed. In this way, ZES charges only for the cost of consumed renewable energy plus a rental fee for the battery container, so the skipper’s operating costs remain competitive. However, vessels must be equipped with an electric propulsion line.

The project will initially be employed along the Zoeterwoude – Alpherium – Moerdijk corridor. Following this, it will be expanded to include the Amsterdam – Rotterdam – Antwerp corridor, making a connection to Nijmegen. The emphasis during the initial stage will be on converted and newly-built container carriers.

The HEINEKEN beer company has entered into an agreement with ZES to utilize the service for transporting beer from its brewery in Zoeterwoude to Moerdijk, thus becoming the first end customer for the enterprise.