Wasaline: AURORA BOTNIA Achieves World’s Largest Battery Capacity for a RoPax Vessel

By 22 February 20262026 Newsletter week 08
February 22, 2026

AURORA BOTNIA has completed sea trials following a major battery upgrade and now features the largest battery capacity ever installed on a RoPax vessel worldwide.

The vessel’s battery capacity has been expanded from 2.2 MWh to 12.6 MWh. The upgraded system has been approved for operation in traffic by DNV.

The new batteries, supplied by marine battery manufacturer AYK Energy, can store nearly five times more energy than the previous battery packs. This significantly enhances the vessel’s:

  • Energy efficiency
  • Operational flexibility
  • Environmental performance

AYK Energy previously supplied the Brittany Ferries E-Flexers SAINT-MALO and GUILLAUME DE NORMANDIE with battery packs very close but just below AURORA BOTNIA’s capacity.