Challenge / Goal
The primary challenge was the vessel's high emissions, consuming 25,000 liters of diesel annually and contributing to 67 tons of CO2 emissions, which was 15% of the Gothenburg Port Authority’s total emissions. The goal was to retrofit M/S Hamnen with an electric propulsion system to minimize its environmental impact while maintaining its critical role in port operations. This initiative was part of the broader goal to reduce port-related emissions by 70% by 2030.
Solution
- Assessment: The first step was a comprehensive assessment of the vessel’s condition and suitability for electrification. Given M/S Hamnen’s excellent state, retrofitting was deemed more feasible and sustainable than replacement.
- Engine Replacement: The old diesel engine was replaced with a 250 kW electric motor. A 520 kWh battery bank was installed to power the new motor.
- Auxiliary Engine: A diesel auxiliary engine was added to ensure operational redundancy and flexibility, particularly for unforeseen circumstances or extreme weather conditions.
- Infrastructure Enhancements: The vessel received a new bridge and several upgrades to improve the onboard working environment and extend its operational lifespan.
- Testing: The vessel underwent rigorous real-world testing to ensure the new systems performed as expected. This phase confirmed better-than-anticipated range and reliability.
Images
Want to learn more about the lessons learned, financial details and results?
Log inImplementers
Port of Gothenburg
End users
The port