There are several types of power plants that generate electricity from different energy sources. Power plants can be categorized based on their fuel or input energy, including coal thermal power plants, hydraulic power plants, nuclear power plants, geothermal power plants, solar power plants, wind power plants, and biomass power plants. Coal thermal power plants generate electricity by burning coal to produce steam that spins turbines connected to generators. Hydraulic power plants use the kinetic energy of falling or flowing water to spin turbines and generate electricity. Nuclear power plants produce heat from nuclear fission in a reactor that converts water to high-pressure steam to spin turbines.