Marine battery maker AYK Energy is gearing up production after striking a deal to undertake the biggest ever battery retrofit on a vessel operated by Finnish shipping line Wasaline.

Marine battery maker AYK Energy has been commissioned to manufacture and supply the 6MWh battery that will power the world’s first battery-methanol tug.

AYK Energy completes the installation and sea trials for the second Brittany Ferries vessel to feature the biggest marine battery ever built. It installs the 12 megawatt-hour (MWh) Orion+ battery into Brittany Ferries Guillaume de Normandie hybrid electric ferry after installing the exact same battery system aboard its sister ship Saint-Malo at China Merchants Jinling Shipyard Weihai.