The invention relates to a method for producing carbon-containing products selected from the group comprising or consisting of gasoline, diesel, kerosene and methane from the steam upstream or downstream of a steam turbine or from geothermally derived steam, characterized in that, at temperatures above 400°C, the carbon-containing products are obtained exclusively or predominantly from the steam and from carbon dioxide (CO2). The invention further relates to a fuel production system suitable for obtaining carbon-containing products selected from the group comprising or consisting of gasoline, diesel, kerosene and methane from the steam upstream or downstream of a steam turbine or from geothermally derived steam, characterized in that the system is designed to carry out the aforementioned method.