How is CNG primarily produced?

CNG, or Compressed Natural Gas, is primarily produced by compressing natural gas, which is primarily composed of methane (CH4). This process involves taking natural gas, which is commonly found in underground reservoirs or as a byproduct of oil extraction, and compressing it to a high pressure to allow for a more efficient storage and transport method. The primary component, methane, is a clean-burning fossil fuel that has become an increasingly popular alternative to gasoline and diesel for powering vehicles, as it produces fewer pollutants and greenhouse gases during combustion.

The compression process enhances the energy density of natural gas, making it practical to use in vehicles designed for CNG. This form of natural gas does not require refining like crude oil and is distinct from other fuel production methods that might involve processing liquids or solid fuels.