The Food and Agricultural Organisation of the United Nations (FAO) engaged E4tech to identify the most attractive markets for pyrolysis oil in the EU in heat and power applications. We recommended Sweden, Finland and the UK as most attractive markets to replace Heavy Fuel Oil (HFO) in the near term. The study involved a multi-criteria scoping exercise based on volume, HFO prices and possible margins considering production, transportation costs, taxes and policy support. For the selected countries, E4tech carried out a thorough analysis of national biomass legislation in terms of renewable energy support mechanisms and tax exemptions to understand financial advantages. To complement the analysis E4tech interviewed a number of industry players, academics, governmental organisations and industry associations. The client used the recommendations to prioritise the countries and sectors and aims to engage further with relevant actors regarding the replacement of HFO by pyrolysis oil in the most attractive markets.