https://www.maximizemarketresearch.com/market-report/global-exhaust-heat-power-generation-system-market/78235/ The internal combustion engine are not able to convert whole chemical energy into mechanical power. Approximately, 26% of heat energy is transferred to the exhaust system of the vehicle. The exhaust heat power generation system is utilized to exhaust heat to generation of electricity which is used by car battery. This system helps to enhance fuel efficiency and reduce load on the alternator of the car.