Thermal power generation using coal, oil or natural gas as fuel, thermal energy will change to electrical energy by generating power unit (power plant boiler, steam turbine and generator and its auxiliary devices).
Thermal power generating unit is mainly composed by combustion system (boiler as core), steam and water system (mainly composed of various types of pumps, water heater, condenser, pipe, and water cooled wall and so on), electrical systems (turbo-generator and main transformer), control system.The former two will generate high temperature and pressure steam.Electrical system will realize the transformation of thermal energy, mechanical energy change into electrical energy;Control system guarantees safe, reasonable and economical operation.

Thermal power generation has a long history, mature technology, less investment and stable operation.At present small thermal power projects are mostly used in China and Indonesia, Pakistan, South America and other regions.