Fully electric RoPax ferry Nerthus

Why Molslinjen chose Echandia:

• Long service life: Exceeds 20,000 cycles, providing more than 12 years of operation without major battery replacement

• No oversizing requirement: Full installed capacity can be used without reserving extra buffer, reducing system weight and cost

• High charging speed: Capable of frequent, short charging cycles during tight turnarounds

• Class-leading safety: High thermal stability and minimal risk of thermal runaway

• Lowest total cost of ownership: Long lifespan and efficient design minimize operational costs

Performance and integration

The Nerthus operates daily on the Samsø–Kalundborg line, one of the region’s busiest ferry connections. With fast turnaround charging, the vessel can complete multiple crossings per day without using diesel generators, significantly reducing both emissions and noise.

For passengers, the fully electric propulsion system provides a quieter, smoother, and more comfortable experience compared to diesel ferries. For operators, the Echandia LTO system ensures reduced fuel costs, simplified maintenance, and long-term operational reliability.

The total cost of ownership, combined with the product’s high level of safety and low weight, were key factors in selecting Echandia as battery supplier. Choosing a system with a longer lifetime also makes sense from a sustainability perspective.

Ole Berg-Hansen, Chief Engineer, Molslinjen

Echandia’s battery systems offer a combination of long lifespan and low weight, ensuring the lowest costs and the lowest climate impact over the entire battery system’s lifetime.

Kristian Durhuus, CEO, Molslinjen

Looking ahead

Nerthus is the first of two vessels equipped with Echandia battery systems for Molslinjen. Together, the two ships represent approximately 7 MWh of installed battery capacity. Both are designed with automatic docking and charging, reflecting the industry’s transition toward smart, fully electric, zero-emission ferry operations.