Two cylinders, single LP cylinder. This two cylinder configuration, made by a high pressure AS module plus a single flow (SL) or double flow low pressure turbine (DL), covers with state of the art performance a broad range of applications: typical are combined cycles, solar and biomass with a high degree of flexibility in steam conditions provided by different versions of the same basic standard. Sliding pressure operations with full arc admission is typical although control stage versions can be supplied as well. This arrangement allows to choose the optimal speed for each machine section, also setting one turbine module on each side of the generator.