Wärtsilä chosen for ‘world’s largest’ marine battery hybrid system

Becky Schultz Vice President of Content, Power Division

27 August 2025

Technology group Wärtsilä has been selected as the electrical integrator for a major battery extension project for the Wasaline RoPax ferry Aurora Botnia. The project will increase the ship’s battery capacity from 2.2 MWh to 12.6 MWh, reportedly making it the world’s largest marine battery hybrid system in operation.…

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