CNG is the acronym for compressed natural gas. Natural gas is available in the Czech Republic for use in transportation. Although CNG is not classified as renewable energy, it is an interesting alternative to oil since natural gas reserves are much larger than those of oil. CNG is a fuel that can be described as cheap, environmentally friendly and safe.

CNG is very stable due to its properties and, therefore, it is safe in all operations and manipulations. If for any reason a CNG leak should occur, the gas is freely dispersed in the atmosphere and there is no risk of accumulation in the ground and CNG vehicles can be parked in underground garages.

Biogas in the Czech Republic, which is obtained through fermentation processes, after being purified is called biomethane and contains, similar to CNG, 98% methane (CH4). This composition makes it possible to use biogas to power automobiles and other means of transportation. Due to the very similar composition of biogas and natural gas, they can share transportation and filling infrastructure. The energy obtained from the combustion of biomethane has an important advantage, it is the energy obtained from renewable sources.

Currently there are CNG filling stations in operation in the Czech Republic and this network is constantly increasing, it is expected that the network density of these stations will also increase. Traditionally the price of CNG in the Czech Republic is very cheap compared to traditional fuels