The presentation's focus is a feasibility study to retrofit existing barges to a hybrid configuration where an electric motor is added around the propeller shaft. The electric motor is powered by batteries that allow at least 50% of daily operations to be zero emission. It will cover the business cases, technical challenges and certification of the hybrid powertrain. Research already completed shows that at current battery prices based on maritime standards, such a retrofit is already interesting for 15% of the fleet. This could achieve a large reduction in CO2 emissions from inland navigation.