In the United States, Natural gas (a.k.a. Petroleum gas) is utilized widely to warmth homes, and furthermore has critical applications in modern and business settings. Natural gas is like what is considered to as biogas, which is methane created from the breakdown of natural components.

Since it is a non-renewable energy source, it contains numerous auxiliary items that must be refined out of the methane to render it monetarily practical. Propane, ethane, butane, helium and hydrogen sulfide are evacuated and are viewed as an optional source of income for refiners.