Thermoelectric Power Generation Home / Power Generation Hydrogen Fuel Cells Customer Support Power Generation Hydrogen Fuel Cells Customer Support / Principle & Overview Introduction Application Fields Application Process Installation Cases Product Lineup Principle & Overview Introduction Application Fields Application Process Installation Cases Product Lineup Principle & Overview Thermoelectric Power Output Pg : Generated by the temperature gradient (ΔT), and the output power varies depending on the external load resistance (R). Thermoelectric Generation Efficiency : Defined as the ratio between thermoelectric power output (Pg) and the supplied heat energy (Qa).