Molslinjen will install a 12-MWh battery energy storage system at Ballen Ferry Port on Samsø. The facility will support the electric ferry TYRFING, operating between Ballen and Kalundborg with up to five daily return crossings.
The battery will store enough electricity for approximately four ferry crossings, providing a more secure and stable energy supply. BOS Power will deliver the system, following consultancy support from Hybrid Greentech.
Besides supporting ferry operations, the battery can absorb surplus electricity when demand is low and release it back into the local grid during peak periods. Samsø Municipality also hopes it could eventually provide emergency power during a prolonged interruption of the island’s submarine cable connections.
Construction is scheduled for autumn and winter 2026/2027, with commissioning expected in March 2027.
Photo: Here is the first sketch of what will be the future BESS facility on Samsø.

