hydroelectric power plants. Thermal power plants use fuel to boil water

which makes steam. The steam turns turbines that generate electricity.

Hydroelectric power plants use the great force of rushing water from a

dam or a waterfall to turn the turbines.

The majority of thermal power plants burn fossil fuels because thermal

power plants are cheaper to maintain and have to meet less of the

governments requirements compared to nuclear power plants. Fossil fuels

are coal and oil. The downfall of using fossil fuels is that they are

limited. Fossil fuels are developed from the remains of plants and

animals that died millions of years ago. Burning fossil fuels has other

downfalls, too. All the burning that is required to turn the turbines

releases much sulfur, nitrogen gases, and other pollutants into the

The cleanest, cheapest, and least polluting power plant of the two types

is the hydroelectric power plant. The main reason most countries use

thermal versus the hydroelectric is because their countries don’t have

enough concentrated water to create enough energy to gene

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