The thermal power station is coal fuel. Because the world coal many of the storage capacity, coal prices are lower. And construction of a hydropower station over the same cost of hydroelectric power stations to low-cost, because thermal power stations only need to build furnaces, exhaust facilities, generators, coal facilities, construction of these components are quite safe. and the construction of hydroelectric power stations, even before the construction of a dam with numerous steel cement in the river reservoir built, Drivers can use hydraulic generator. Thermal energy from the impact of climate, hydroelectric affected by climate. However, after the burning of coal of non-renewable and energy efficiency is very low, only less than one third of energy use, two-thirds of the heat energy, will be, so that the water near the river rose several degrees, the fish died. But emissions from power stations is also pollute the environment.