During the last decade the awareness about climate change has been raised. The facts speak for themselves: CO2 levels in the air have never been higher, the temperature has risen about 1.18°C since the end of the 19th century and nineteen of the warmest years have occurred since 2000 [1]. The increase of CO2 concentration is mainly due to the use of fossil fuels and unlike gases like O2 or N2, CO2 is what is called a greenhouse gas, it absorbs heat, releasing it over time. This is why decarbonisation has become a global goal, the aim is to increase low-carbon power generation and decrease the use of fossil fuels.