Wärtsilä has been chosen as the electrical integrator for a major battery upgrade on Wasaline’s ROPAX ferry Aurora Botnia. The project will expand the vessel’s battery capacity from 2.2 MWh to 12.6 MWh, making it the world’s largest marine battery hybrid system in operation. The order was booked in Q3 2025, with commissioning set for […] The post Wärtsilä to deliver world’s largest marine battery hybrid system appeared first on Container News .