A method for managing heat-up rate of a steam turbine via a gas turbine, the method comprising: operating the gas turbine at a full speed no load condition; estimating an actual exhaust gas temperature of an exhaust gas flowing from the gas turbine and into a heat exchanger disposed downstream from the gas turbine based on one or more measured operating parameters of the gas turbine, wherein the heat exchanger utilizes thermal energy from the exhaust gas to generate steam; measuring an initial temperature of the steam turbine; generating a preferred exhaust gas temperature, via a controller having a processor and memory, based upon the initial temperature of the steam turbine; routing the steam from the heat exchanger into a rotor portion of the steam turbine; comparing, via the controller, the actual exhaust gas temperature to the preferred exhaust gas temperature, as calculated by a thermodynamic model, wherein if the actual exhaust gas temperature is not equal to the preferred exhaust gas temperature the method further comprises repositioning a plurality of inlet guide vanes disposed at an inlet of a compressor of the gas turbine until the actual exhaust gas temperature reaches the preferred exhaust gas temperature, and wherein once the exhaust gas temperature reaches the preferred exhaust gas temperature the method further comprises: estimating an actual exhaust gas flow rate of the exhaust gas flowing from the gas turbine and into the heat exchanger based on the one or more measured operating parameters of the gas turbine; generating a preferred exhaust gas flow rate, via the controller, based on upon the initial temperature of the steam turbine; and comparing, via the controller, the actual exhaust gas flow rate to the preferred exhaust gas flow rate, as calculated by the thermodynamic model, wherein if the actual exhaust gas flow rate is not equal to the preferred exhaust gas flow rate the method further comprises adjusting fuel flow to a combustor of the gas turbine until the actual exhaust gas flow rate reaches the preferred exhaust gas flow rate. operating the gas turbine at a full speed no load condition; estimating an actual exhaust gas temperature of an exhaust gas flowing from the gas turbine and into a heat exchanger disposed downstream from the gas turbine based on one or more measured operating parameters of the gas turbine, wherein the heat exchanger utilizes thermal energy from the exhaust gas to generate steam; measuring an initial temperature of the steam turbine; generating a preferred exhaust gas temperature, via a controller having a processor and memory, based upon the initial temperature of the steam turbine; routing the steam from the heat exchanger into a rotor portion of the steam turbine; comparing, via the controller, the actual exhaust gas temperature to the preferred exhaust gas temperature, as calculated by a thermodynamic model, wherein if the actual exhaust gas temperature is not equal to the preferred exhaust gas temperature the method further comprises repositioning a plurality of inlet guide vanes disposed at an inlet of a compressor of the gas turbine until the actual exhaust gas temperature reaches the preferred exhaust gas temperature, and wherein once the exhaust gas temperature reaches the preferred exhaust gas temperature the method further comprises: estimating an actual exhaust gas flow rate of the exhaust gas flowing from the gas turbine and into the heat exchanger based on the one or more measured operating parameters of the gas turbine; generating a preferred exhaust gas flow rate, via the controller, based on upon the initial temperature of the steam turbine; and comparing, via the controller, the actual exhaust gas flow rate to the preferred exhaust gas flow rate, as calculated by the thermodynamic model, wherein if the actual exhaust gas flow rate is not equal to the preferred exhaust gas flow rate the method further comprises adjusting fuel flow to a combustor of the gas turbine until the actual exhaust gas flow rate reaches the preferred exhaust gas flow rate. estimating an actual exhaust gas flow rate of the exhaust gas flowing from the gas turbine and into the heat exchanger based on the one or more measured operating parameters of the gas turbine; generating a preferred exhaust gas flow rate, via the controller, based on upon the initial temperature of the steam turbine; and comparing, via the controller, the actual exhaust gas flow rate to the preferred exhaust gas flow rate, as calculated by the thermodynamic model, wherein if the actual exhaust gas flow rate is not equal to the preferred exhaust gas flow rate the method further comprises adjusting fuel flow to a combustor of the gas turbine until the actual exhaust gas flow rate reaches the preferred exhaust gas flow rate.