The invention relates to a process for producing synthesis gas, which comprises the steps: provision of a feed gas stream, where the feed gas stream comprises a hydrocarbon, preferably methane, and steam, heating of at least one part of the feed gas stream in a first steam reformer using heat of combustion and conversion of the heated feed gas stream into a synthesis gas stream comprising CO and H2 in a reforming step. The invention provides for at least one part of the feed gas stream to be heated outside the first steam reformer, at least partly using electric energy.
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