Definition - What does Energy mean?

Energy is the power or force that is derived from physical or chemical resources. Energy is released when the source is combusted, which is then used to make a system function or perform something. It can exist in a number of forms and it is present everywhere around us. For example, when oil and natural gas are burnt, they undergo a series of chemical reaction that releases energy.

Petropedia explains Energy

One of the main resources of energy on the earth is fossil fuels. When fossil fuels such as natural gas, oil or coal are burned, they catch fire and release energy in the form of heat. This heat energy, which is acquired by conducting a chemical reaction, is further used to provide power. For example, oil is burned to make steam, which can be used to run a steam turbine to produce electricity. The petroleum industry is the main provider of energy, i.e., oil and natural gas.

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