Electrification of the eMS Rütli

The motor vessel Rütli, which entered service in 1929, is the smallest ship in the SGV fleet and is primarily used on the short scenic route from Lucerne to Meggenhorn. SGV aims to set a good example by reducing the CO₂ emissions of its ships. The Rütli was therefore an ideal candidate for the first complete electrification of a fleet ship on Lake Lucerne.

For this purpose, the previous diesel engine was replaced with a powerful electric motor, and batteries were installed as an energy storage system.

The electrification of the eMS Rütli is intended to reduce diesel consumption within the fleet and thus contribute to lowering CO₂ emissions. SGV has set a goal to reduce the share of fossil fuels used by its scheduled ships by 20% by 2026 compared to 2019. We are proud to have successfully implemented this project.

Interesting fact: Before electrification, MS Rütli consumed an average of around 7,900 liters of diesel per year, which corresponds to approximately 21 tons of CO₂ emissions. Now, during a day of operation as a scenic and city cruise vessel (three 75-minute round trips), it only requires about 120-130 kWh.

At the beginning of the project, the hull was overhauled and given a fresh coat of paint. The cramped space below deck posed a challenge that had to be addressed. This was successfully managed, as all components were arranged in a way that ensured easy and convenient operation for customers. For systematic and nautical safety, the engine room was divided by a new steel bulkhead into a propulsion room with an electric motor and a battery room. Each of these rooms has a separate access from above.

The requirement that the vessel must be able to travel the Lucerne–Brunnen route on a full charge was met. However, recharging the batteries would be necessary for the return journey. To support the operation of the eMS Rütli, the onshore infrastructure had to be expanded accordingly. For this purpose, connection and charging facilities are being installed at locations L4 and W2 as part of a separate project commissioned by SGV AG.