A power generation system including a gas turbine is disclosed. The power generation system includes a steam supply system including a high-temperature high pressure superheater and a high-temperature intermediate pressure reheater; a steam turbine assembly including at least one of a non-condensing steam turbine, a high-pressure steam turbine section, an intermediate-pressure steam turbine section; and a low-pressure steam turbine section, and, a control system coupled to the steam supply system and to the steam turbine assembly. The control system configured to selectively control a supply of reheat steam to the non-condensing steam turbine and to the intermediate-pressure steam turbine section; and selectively control a supply of high pressure superheated steam to the non-condensing steam turbine and high-pressure steam turbine section.