What is Natural Gas?

Natural gas is a combustible, gaseous mixture of simple hydrocarbon compounds, usually found in deep underground reservoirs formed by porous rock. Natural gas is a fossil fuel composed almost entirely of methane, but does contain small amounts of other gases, including ethane, propane, butane and pentane. Methane is composed of a molecule of one carbon atom and four hydrogen atoms.


Natural gas is used extensively in residential, commercial and industrial applications. It is the dominant energy used for home heating with slightly more than one half of American homes using gas. Overall, more than 66 million homes use natural gas. The use of natural gas is also rapidly increasing in electric power generation and cooling.

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Source: American Gas Association

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