C.N.G. is used as a fuel in:

Concept

Compressed Natural Gas (CNG) is natural gas, mainly methane, compressed to high pressure so it can be stored and transported economically. Petroleum-sector regulators document two standardised fuel applications for CNG: an automotive/vehicular fuel dispensed at CNG stations, and an industrial fuel used for heating, power generation, and process energy in factories.

Application

Both the vehicular use and the industrial use of CNG are separately documented and widely adopted: cities run CNG-fuelled buses, cars, and autos, and industries use CNG as a cleaner substitute for furnace oil or coal in boilers and furnaces. Domestic cooking is not supplied via CNG; households use LPG cylinders or piped natural gas (PNG), which are distribution systems distinct from vehicle-station CNG.

Cross-check

• Vehicles names one of CNG's two documented fuel sectors (transport) without the industrial sector.

• Industries names one of CNG's two documented fuel sectors (industrial) without the transport sector.

• Cooking names a sector where the household fuel supply is LPG cylinders or piped natural gas (PNG), not CNG.

CNG's documented fuel role spans both the transport sector and the industrial sector; the option naming both sectors together matches that documented record.