ABB, OceanWings and Everllence have signed a memorandum of understanding to develop an optimized propulsion concept that combines wind-assisted propulsion systems with hybrid electric technology for LNG carriers.

The partnership, signed at GasTech 2025 in Milan, aims to build upon ABB's and Everllence's existing DFE+ (Diesel-Electric with variable speed) concept by integrating OceanWings' wingsail technology.

The DFE+ system is designed to enable high engine efficiency at partial loads, operational flexibility through multiple engines, and future integration of sustainable energy sources including batteries and fuel cells.

OceanWings' wingsail technology features what is described as Adaptive Trimming capability, which continuously optimizes sail positioning by accounting for each vessel's aerodynamic profile and interactions.

Romain Grandsart, COO of OceanWings, remarked: "LNG carriers sail fast and spend typically 70% of their time at sea. This is ideal for harnessing wind and the full potential of OceanWings rigid wingsails. Combined with optimized propulsion, including a DFE+ highly efficient variable-speed concept engine, this unlocks high double-digit fuel savings and greenhouse-gas emissions reduction."

Rune Lysebo, Head of Strategic Market Development at ABB's Marine and Ports division, commented: "We at ABB believe that the flexibility of our hybrid electrical propulsion system is a good match with the variable power contribution from the wind. By utilizing ABB's advanced power and energy solution, we are able to optimize the operational efficiency of the vessel."

The collaboration addresses the challenge of variable propulsion demand created by fluctuating wind conditions through the DFE+ system's precise load control and operational flexibility, according to Dominik Thoma, Global Manager LNG Cargo at Everllence.

"While WAPS introduces highly variable propulsion demand due to fluctuating wind conditions, DFE+ propulsion offers precise load control and operational flexibility, making it exceptionally well-suited to harness the variable and intermittent power contributions of wind-assisted systems," Thoma said.

The initial scope focuses on a future LNG carrier concept, with further applications planned within the cargo segment. The partners claim the technology shows strong potential for long-distance operations and vessels with sufficient deck space for wingsails.

The collaboration also aims to deliver reductions in both operational expenditure and capital expenditure for next-generation vessel designs, according to the companies.

ABB is a technology company specializing in electrification and automation, while OceanWings designs and delivers wind-assisted propulsion systems. Everllence, formerly MAN Energy Solutions, provides propulsion, decarbonization, and efficiency solutions for shipping.