Wärtsilä has been selected as the electrical integrator for a major battery extension project for the Wasaline ro-pax ferry ‘Aurora Botnia’.
The project will increase the ship’s battery capacity by 10.4 MWh, from 2.2 MWh to 12.6 MWh, making it the largest marine battery hybrid system in operation.
In the transition to more sustainable ferry transportation, hybrid propulsion systems have emerged as a viable solution, offering various pathways to reduce GHG emissions. These systems, which combine energy storage capabilities with conventional engines, can significantly cut fuel consumption and, consequently, emissions.
The Aurora Botnia ferry, operated by Wasaline, is equipped with dual-fuel engines and batteries and is using biogas and batteries for the propulsion. Expanding its battery capacity is a major step in making the ship more sustainable. Wärtsilä will lead the integration project and as a result, the battery capacity of the ferry will be extended by 10.4MWh. Wärtsilä will deliver the energy management system, as well as upgrade the power drives and the control system integration. The system is scheduled to be commissioned in early 2026.
Peter Ståhlberg, MD Wasaline, said: “Wasaline’s commitment to decarbonised shipping operations is central to everything we do. In this, our close cooperation with Wärtsilä is an essential element that benefits not only both our companies, and we can see that our cooperation sets standards for the whole marine sector. Through our continued collaboration, the Aurora Botnia has become a working example of what is possible when it comes to delivering environmentally friendly transportation within shipping.”
This latest project will strengthen the existing collaboration agreement between Wärtsilä and Wasaline, with Aurora Botnia acting as a floating test lab linked to Wärtsilä’s sustainable technology hub. It allows further development of hybrid technologies to optimise fuel efficiency and minimise exhaust emissions. As a result, the vessel is one of the most environmentally sustainable ferries in the world, operating carbon neutrally already today.
Roger Holm, President Wärtsilä Marine and EVP Wärtsilä Corporation, said: “Wasaline once again demonstrates its strong commitment to decarbonisation by extending the electrification capacity of this ferry. Our latest contribution will optimise the ship’s operations even further, creating fuel savings and a significant reduction in emissions.”
The Aurora Botnia, which entered into service in 2021, operates with a range of integrated Wärtsilä solutions, including four Wärtsilä 31DF engines. The ultra-low emissions version of the engine has helped the ferry to significantly reduce methane emissions. The ferry operates between Vaasa in Finland and Umeå, Sweden.
Image: Wärtsilä has been selected as the electrical integrator for the battery extension project for Wasaline ferry ‘Aurora Botnia’ (credit: Wärtsilä Corporation)
