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Fuel cells are currently expencive, sensitive to load variations and not reliable over time. Internal Combustion Engines (ICE) are considered as an alternative to fuel cells by several major players in the industry. A rotary engine is smaller and has a higher power to weight ratio than a piston engine. Temperature and pressure conditions in a rotary engine are favourable for conversion to hydrogen. Rothor Advanced Power AS applies the multi fuel technology to the MAZDA RENESIS engine.