Hybrid Greentech appointed technical advisor on the world's largest maritime electrification project

Hybrid Greentech has served as technical advisor for the battery energy storage systems (BESS) scope to Molslinjen throughout the development of the world's largest maritime electrification project and will continue in that role through to delivery and operation.

Molslinjen, Denmark's largest ferry operator, has selected Hybrid Greentech as technical advisor to scope and specify the battery energy storage systems for its landmark maritime electrification project. Two 118 MWh systems will be installed at the ports of Aarhus and Sjællands Odde, powering Molslinjen's new electric mega-catamarans on the Kattegat crossing; vessels currently under construction at the Incat shipyard in Australia, with the first expected in service in spring 2028.

Hybrid Greentech has advised Molslinjen since the project's inception, supporting the technical process of defining requirements and selecting the right battery supplier. That work continues: Hybrid Greentech remains engaged as the project moves into delivery.

Infrastructure at the scale the transition demands

Each harbour installation will hold 118 MWh of battery capacity, placing these among the largest commercial battery systems ever built in Denmark. The batteries are the backbone of the operation.

Fast charging between crossings will draw on a combination of grid supply and the harbour batteries, ensuring vessels have sufficient energy for every departure. The scale of the energy challenge required a different approach to charging infrastructure entirely.

"We cannot simply charge directly from the grid on every crossing. To ensure we always have the energy we need, the batteries provide backup and redundancy. In the batteries, we can store enough for three to four ferry crossings if grid supply is interrupted," says Molslinjen CEO Carsten Jensen.

Rasmus Rode Mosbæk, CEO of Hybrid Greentech, underlines what makes the project technically unprecedented:

“The Molslinjen project is one of the most complex and ambitious battery projects we have been part of. Battery systems of this scale for maritime use have not been seen before in Europe, and the harbour batteries are not just infrastructure – they are the very foundation that makes electric operations across the Kattegat possible. It has taken thorough technical advisory work to find the right solution. This is exactly the kind of project we exist to solve, and we look forward to seeing it through together with Molslinjen and the rest of the team.”

When all three battery-powered ferries are in service, the project is expected to reduce CO₂ emissions by 132,000 tonnes annually. This is one of the most significant single electrification contributions in Danish transport history.

The project in numbers

·       2 × 118 MWh harbour battery systems

·       132,000 tonnes CO₂ saved annually when fully operational

·       3 electric ferries, with the first entering service spring 2028

·       Total investment in ferries and harbour infrastructure: DKK 3.5 billion

About Hybrid Greentech

Founded in 2018, Denmark-based Hybrid Greentech builds cloud-based Virtual Power Plant platforms that connect energy storage, flexibility, and renewable assets. Hybrid Greentech is the missing link to 100% renewable power, with an award-winning, fully automated VPP that optimises assets and unlocks multi-market revenue. As a BRP and retailer, it operates as a vertically integrated stack that includes trading, multi-market optimisation, asset interfaces, analytics, and settlement in one platform. For media enquiries:

Medine Duvarci

Email: medine@hybridgreentech.com

Mobile: +45 48 88 55 40