A combined cycle power plant, comprising: a gas turbine engine to generate power including a compressor to compress inlet gases to be mixed with fuel and combusted; a heat recovery steam generator (HRSG) to produce steam from high energy fluids produced from the generation of power in the gas turbine engine; a steam turbine engine to generate power from the steam produced in the HRSG; and a thermal load reduction system to control thermal loading of components of the HRSG and/or the steam turbine engine during at least startup and/or part load operations, which includes: an eductor assembly comprising a first body defining a first opening in fluid communication with fluids removed from the HRSG or tank air and a second opening in fluid communication with an interior of the HRSG, and a second body, which is receptive of compressor discharge air from the compressor and supported within the first body such that the compressor discharge air is dischargeable into the first body toward and through the second opening to thereby entrain the fluids removed from the HRSG or the tank air to flow as entrained fluids or entrained tank air from the first opening toward and through the second opening and characterized by a lance operably disposed at the second opening to direct the received fluid and the entrained fluids or the entrained tank air toward a deep portion of the HRSG interior. a gas turbine engine to generate power including a compressor to compress inlet gases to be mixed with fuel and combusted; a heat recovery steam generator (HRSG) to produce steam from high energy fluids produced from the generation of power in the gas turbine engine; a steam turbine engine to generate power from the steam produced in the HRSG; and a thermal load reduction system to control thermal loading of components of the HRSG and/or the steam turbine engine during at least startup and/or part load operations, which includes: an eductor assembly comprising a first body defining a first opening in fluid communication with fluids removed from the HRSG or tank air and a second opening in fluid communication with an interior of the HRSG, and a second body, which is receptive of compressor discharge air from the compressor and supported within the first body such that the compressor discharge air is dischargeable into the first body toward and through the second opening to thereby entrain the fluids removed from the HRSG or the tank air to flow as entrained fluids or entrained tank air from the first opening toward and through the second opening and characterized by a lance operably disposed at the second opening to direct the received fluid and the entrained fluids or the entrained tank air toward a deep portion of the HRSG interior. an eductor assembly comprising a first body defining a first opening in fluid communication with fluids removed from the HRSG or tank air and a second opening in fluid communication with an interior of the HRSG, and a second body, which is receptive of compressor discharge air from the compressor and supported within the first body such that the compressor discharge air is dischargeable into the first body toward and through the second opening to thereby entrain the fluids removed from the HRSG or the tank air to flow as entrained fluids or entrained tank air from the first opening toward and through the second opening and characterized by a lance operably disposed at the second opening to direct the received fluid and the entrained fluids or the entrained tank air toward a deep portion of the HRSG interior.