The invention relates to a method for heating a steam turbine (1) comprising a high-pressure turbine section (2) and a medium-pressure turbine section (3) and/or a low-pressure turbine section (4). Said method is characterized by the essential aspect that the high-pressure turbine section (2) is impinged upon by steam having relatively great conductivity while the medium-pressure turbine section (3) or the low-pressure turbine section (4) remains closed during said impingement following a cold start. As soon as the conductivity drops below a certain value, the medium-pressure turbine section (3) or the low-pressure turbine section (4) is also impinged upon by steam.
