A process to perform steam cracking reaction of hydrocarbons having at least two carbons, said process comprising the steps of: a) providing at least one fluidized bed reactor comprising at least two electrodes and a bed comprising particles; b) putting the particles of the bed in a fluidized state by passing upwardly through the said bed a fluid stream, to obtain a fluidized bed ; and c) heating the fluidized bed to a temperature ranging from 700°C to 1000°C to conduct the steam cracking reaction of a hydrocarbon feedstock; characterized in that at least 10 wt.% of the particles based on the total weight of the particles of the bed are electrically conductive particles and have a resistivity ranging from 0.001 Ohm.cm to 500 Ohm.cm at 800°C; in that the step c) of heating the fluidized bed is performed by passing an electric current through the fluidized bed; in that the void fraction of the bed is ranging from 0.5 to 0.8, in that the particles of the bed have an average particle size ranging from 5 to 300 μm as determined by sieving according to ASTM D4513-11; and in that the electrically conductive particles of the bed comprise one or more selected from graphite, carbon black, one or more metallic alloys, one or more non-metallic resistors, one or more metallic carbides, one or more transition metal nitrides, one or more metallic phosphides, one or more superionic conductors, one or more phosphate electrolytes, one or more mixed oxides being doped with one or more lower-valent cations, one or more mixed sulphides being doped with one or more lower-valent cations, and any mixture thereof; with preference, the process further comprises a step d) of recovering the cracking products of the reaction. a) providing at least one fluidized bed reactor comprising at least two electrodes and a bed comprising particles; b) putting the particles of the bed in a fluidized state by passing upwardly through the said bed a fluid stream, to obtain a fluidized bed ; and c) heating the fluidized bed to a temperature ranging from 700°C to 1000°C to conduct the steam cracking reaction of a hydrocarbon feedstock; characterized in that at least 10 wt.% of the particles based on the total weight of the particles of the bed are electrically conductive particles and have a resistivity ranging from 0.001 Ohm.cm to 500 Ohm.cm at 800°C; in that the step c) of heating the fluidized bed is performed by passing an electric current through the fluidized bed; in that the void fraction of the bed is ranging from 0.5 to 0.8, in that the particles of the bed have an average particle size ranging from 5 to 300 μm as determined by sieving according to ASTM D4513-11; and in that the electrically conductive particles of the bed comprise one or more selected from graphite, carbon black, one or more metallic alloys, one or more non-metallic resistors, one or more metallic carbides, one or more transition metal nitrides, one or more metallic phosphides, one or more superionic conductors, one or more phosphate electrolytes, one or more mixed oxides being doped with one or more lower-valent cations, one or more mixed sulphides being doped with one or more lower-valent cations, and any mixture thereof; with preference, the process further comprises a step d) of recovering the cracking products of the reaction. <EOS>