What does CNG primarily consist of?

Compressed Natural Gas (CNG) primarily consists of methane, which is a simple hydrocarbon with the chemical formula CH₄. Methane is the principal component of natural gas and is the most common constituent found in CNG. It is favored for use in vehicles due to its high energy content and cleaner-burning properties compared to other fossil fuels. When combusted, methane produces fewer pollutants and greenhouse gases, making it a more environmentally friendly option for fueling vehicles.

The focus on methane is a key factor in the use of CNG for transportation, as it contributes to lower emissions of carbon dioxide, nitrogen oxides, and particulate matter in comparison to gasoline or diesel. This characteristic makes CNG a popular choice for fleet operators looking to reduce their environmental impact while maintaining fuel efficiency.

Other options such as butane, propane, and ethane are hydrocarbons as well, but they do not constitute the primary component of CNG. Butane and propane are often used as alternative fuels but serve different purposes and have different applications in the energy market.