According to the fuel used by the plant, it can be classified in coal-fired power plant, fuel oil thermal power plant and gas-fired power plant. According to the function, it can be classified in power plant and thermal power plant. Our company can build medium or large-scale modern heat-engine plants which is in high level of automation with computer control. Heat-engine plant is a big and complicated plant which produces electric energy and heat energy. The plant is composed by 5 systems: (1) fuel system; (2) burning system; (3) gas and water system; (4) electrical system; (5) control system. Our high efficiency running mode can widely reduce fuel consumption and cut down fuel consumption fees.