The transport, buildings and industry sectors, which still rely on gas and liquid fossil fuels, are the sectors
with the highest carbon reduction costs. In this context, Power-to-X technologies, together with the
development of low carbon electricity generation facilities look promising for full decarbonization by 2050.
This paper describes three types of Power-to-X technologies, the basic principle of Power-to-X systems and
the reactions that occur. Then the technical and economic parameters for Power-to-H2, Power-to-CH4 and
Power-to-Liquids are reviewed, followed by their advantages and disadvantages. An assessment is made of
the conditions under which these technologies can compete with the alternative low-carbon production
processes by 2050.
Key words: Power-to-X technologies, Power-to-H2, Power-to-CH4, Power-to-Liquids.