One of the main challenges of the 21st century is certainly the reduction of greenhouse gas emissions (in particular CO2); to achieve this, the decarbonisation of the energy system is necessary. In Italy in 2018 the industrial sector accounts for the 21% of the total final energy consumption (ENEA, 2020) equal to 24,2 Mtoe, with 406,3 ktoe coming from renewable sources (1,7% of the industrial energy consumption). A key point is to establish how this energy is used, in particular the share that is used for heat production and the temperature levels of it. To date, the decarbonization of the industry is mainly based on the electrification of production processes, which combined with the production of electricity through renewable technologies such as photovoltaic and wind power, allow to reduce carbon dioxide emissions.