A chemical plant comprising: - a reforming section arranged to receive a feed gas comprising hydrocarbons including methane and provide an output synthesis gas, wherein said reforming section comprises: - an electrically heated reforming reactor housing a first catalyst, said electrically heated reforming reactor being arranged for receiving said feed gas and generating a first synthesis gas by a steam methane reaction, - an autothermal reforming reactor downstream said electrically heated reforming reactor, said autothermal reforming reactor housing a second catalyst, said autothermal reforming reactor being arranged for receiving said first synthesis gas and outputting a second synthesis gas, wherein said reforming section is arranged to output said output synthesis gas comprising said second synthesis gas, wherein said electrically heated reforming reactor comprises: - a pressure shell housing an electrical heating unit arranged to heat said first catalyst, where said first catalyst is operable to catalyzing steam reforming of said feed gas, wherein said pressure shell has a design pressure of between 5 and 90 bar, - a heat insulation layer adjacent to at least part of the inside of said pressure shell, and - at least two conductors electrically connected to said electrical heating unit and to an electrical power supply placed outside said pressure shell, wherein said electrical power supply is dimensioned to heat at least part of said first catalyst to a temperature of at least 450°C by passing an electrical current through said electrical heating unit, wherein said electrical heating unit comprises a macroscopic structure of electrically conductive material, where said macroscopic structure supports a ceramic coating and said ceramic coating supports said first catalyst. - a reforming section arranged to receive a feed gas comprising hydrocarbons including methane and provide an output synthesis gas, wherein said reforming section comprises: - an electrically heated reforming reactor housing a first catalyst, said electrically heated reforming reactor being arranged for receiving said feed gas and generating a first synthesis gas by a steam methane reaction, - an autothermal reforming reactor downstream said electrically heated reforming reactor, said autothermal reforming reactor housing a second catalyst, said autothermal reforming reactor being arranged for receiving said first synthesis gas and outputting a second synthesis gas, wherein said reforming section is arranged to output said output synthesis gas comprising said second synthesis gas, - an electrically heated reforming reactor housing a first catalyst, said electrically heated reforming reactor being arranged for receiving said feed gas and generating a first synthesis gas by a steam methane reaction, - an autothermal reforming reactor downstream said electrically heated reforming reactor, said autothermal reforming reactor housing a second catalyst, said autothermal reforming reactor being arranged for receiving said first synthesis gas and outputting a second synthesis gas, wherein said reforming section is arranged to output said output synthesis gas comprising said second synthesis gas, wherein said electrically heated reforming reactor comprises: - a pressure shell housing an electrical heating unit arranged to heat said first catalyst, where said first catalyst is operable to catalyzing steam reforming of said feed gas, - a pressure shell housing an electrical heating unit arranged to heat said first catalyst, where said first catalyst is operable to catalyzing steam reforming of said feed gas, wherein said pressure shell has a design pressure of between 5 and 90 bar, - a heat insulation layer adjacent to at least part of the inside of said pressure shell, and - at least two conductors electrically connected to said electrical heating unit and to an electrical power supply placed outside said pressure shell, - a heat insulation layer adjacent to at least part of the inside of said pressure shell, and - at least two conductors electrically connected to said electrical heating unit and to an electrical power supply placed outside said pressure shell, wherein said electrical power supply is dimensioned to heat at least part of said first catalyst to a temperature of at least 450°C by passing an electrical current through said electrical heating unit, wherein said electrical heating unit comprises a macroscopic structure of electrically conductive material, where said macroscopic structure supports a ceramic coating and said ceramic coating supports said first catalyst.