why is coal used as an energy source

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Cheapest source of energy

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  • What is the main source of energy in coal?

  • It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel in the United States. Fossil fuels are formed from the remains of ancient organisms.

  • Why do we need coal?

  • Unlike other forms of energy (nuclear, natural gas, oil, hydroelectric), coal provides many jobs in removing coal from the earth, transporting it to the utility, burning it, and properly disposing of coal ash.

  • What are the negative effects of coal?

  • Deaths caused by coal per unit of electricity produced (due to air pollution mainly) CO2 emissions 鈥?total emissions, emissions during burning of the energy source, and emissions over the lifecycle of the energy source Harm caused to humans via exposure to, or as a result of dumping of the energy waste by-products

  • Why is CO2 coal classified as a nonrenewable energy source?

  • Coal is classified as a nonrenewable energy source because it takes millions of years to form. Coal contains the energy stored by plants that lived hundreds of millions of years ago in swampy forests. Layers of dirt and rock covered the plants over millions of years. The resulting pressure and heat turned the plants into the substance we call coal.

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