Technology group Wärtsilä has been selected as the electrical integrator for the battery extension project for the Wasaline ropax ‘Aurora Botnia’.
The project will increase the ship’s battery capacity from 2.2 MWh to 12.6 MWh, making it the world’s largest marine battery hybrid system in operation, the company claimed.
In the transition to more sustainable ferry transportation, hybrid propulsion systems have emerged as a compelling solution, offering a multitude of pathways to reduce greenhouse gas (GHG) emissions. These systems, which combine energy storage capabilities with conventional engines, can significantly cut fuel consumption and, consequently, emissions, Wärtsilä said.
‘Aurora Botnia’, which is operated by Wasaline, is equipped with dual-fuel engines and batteries and is using biogas and batteries for her propulsion.
Expanding her battery capacity is a major step in making the ship even 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 also 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.
“Wasaline’s commitment to de-carbonised shipping operations is central to everything we do,” said Peter Ståhlberg, Managing Director – Wasaline.
“In this, our close co-operation with Wärtsilä is an essential element that benefits not only both our companies, and we can see that our co-operation 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,” he said.
This latest project will strengthen the existing collaboration agreement between Wärtsilä and Wasaline, with the ‘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, already operating carbon neutrally.
“Wasaline once again demonstrates its strong commitment to de-carbonisation 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,” added Roger Holm, Wärtsilä Marine President & Executive Vice President at Wärtsilä Corp.
The ropax, 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.
She operates between Vaasa in Finland and Umeå, Sweden.
