ULPower is a Belgian company that designs, produces and sells aircraft engines for (ultra) light aircraft.

The engines are of the air-cooled boxer engine (petrol engine) type. The engine range consists of 4 cylinder and 6 cylinder engines ranging from 97 to 220 HP. However, the combustion of fossil fuels contributes to greenhouse gas emissions and its associated climate change. There is currently only limited demand or pressure from the market to reduce emissions or to produce carbon-neutral engines, given the small market share of (ultra) light aircraft. It is however necessary to start looking now for a sustainable alternative propulsion system for this type of aircraft. Various developments are already ongoing. (e.g. electric, hydrogen fuel cell and hydrogen-fueled combustion engine technology) The use of a carbon neutral synthetic fuel is a possible route for the aviation sector. The question to switch to a different engine type or to keep the engine and use a sustainable fuel is an extremely important decision. The worldwide availability of the sustainable fuel, its cost price and the technical feasibility are important factors in the decision process.

In preparation for the realization of a working prototype alternative engine for (ultra) light aircraft with a climate neutral impact, it is necessary to map out all possible routes with their advantages and disadvantages.