A method and equipment for producing synthesis gas (S) from solid carbon particles (C), the carbon particles (C) being obtained by pyrolysis, gasification of the carbon particles (C) occurs by indirect heating of the carbon particles (C) in the presence of a process gas (P) in the same space where the carbon particles (C) are present, and the synthesis gas (S) generated during the gasification is discharged from the space. The method is characterised in that the carbon particles (C) and the process gas (P) are located in a reactor (1), and the indirect heating occurs by way of radiant heat from burners (Br1-Brn) located in the reactor (1).