- Technology and Innovation
Between the Engine and Gearbox: The Design That Cuts Fuel and Fumes
The Generator’s Last Stand: A New Era of Energy
For decades, the constant companion to a yacht’s main engine has been the noisy, fuel-hungry generator. Integrel Solutions, a two-time DAME Award-winning British manufacturer, is leading the charge to retire that inefficient era. Exhibited at METSTRADE 2025, the Integrel E-Drive is a next-generation marine power generation and electric hybrid propulsion system that acts as a direct generator replacement. This technology ensures energy independent boating for environmentally conscious owners and builders.
40% Efficiency: The Fuel Calculation
The primary appeal of the Integrel E-Drive is the tangible economic and environmental gain. The system is designed for peak main engine efficiency, saving up to 40% of the fuel typically used to generate electricity onboard. This dramatic efficiency gain is achieved because the system generates electricity when the main engine is running, either propelling the boat or out-of-gear, ensuring batteries are consistently topped up. This reduces main engine run time and minimizes the boat’s carbon footprint.
The Engineering Breakthrough: Axial Integration
The E-Drive’s installation method is a key engineering triumph. The compact system is factory-fitted between the main engine and the gearbox. This sophisticated integration adds less than 150mm to the axial length, ensuring zero compromise on space or performance. Furthermore, this simple fitment results in low installation costs compared to traditional gensets, as there is no need for through-hull fittings or separate cooling systems. The E-Drive accommodates both sail drive and shaft drive configurations.
Silent Cruising: Automated Power Management
The operational shift delivered by the E-Drive is substantial. It ensures effortless electric propulsion, allowing the boat to be driven with the fossil fuel engine off, resulting in silent cruising without the noise, vibration, or smell of diesel. The fully automated system manages propulsion, generation, storage, conversion, and distribution—all in one efficient solution. The E-Drive operates intelligently in various modes (Drive, Generation, Hybrid) to suit conditions, maximizing off-grid time.
The Verdict: The Future is Generator-Free
Integrel Solutions has positioned itself at the forefront of sustainable propulsion. The E-Drive system is a compelling answer to the surging demand for eco-friendly systems from builders and owners alike. The collaboration with builders like Balance Catamarans confirms the E-Drive’s success in providing a practical, future-ready hybrid solution that delivers peak performance and minimizes emissions, ensuring a cleaner, more enjoyable boating experience.
