Natural Gas Overview
Natural gas is a domestically produced, clean-burning alternative fuel consisting of mostly methane with small amounts of ethane, propane and other gases. It contains less carbon than any other fossil fuel, emitting approximately 20-30 percent less greenhouse gases than comparable diesel vehicles. Compressed natural gas (CNG) and liquefied natural gas (LNG) have been used for decades to fuel light-duty and heavy-duty natural gas vehicles. Because of the gaseous nature of this fuel, it must be stored onboard a vehicle in either a compressed gaseous or liquefied state.
Nearly 100 percent of the natural gas consumed in North America is domestically produced. Increased use of natural gas will therefore reduce our dependence on foreign oil and the unstable regimes that control these supplies. Current US gas estimates range from 75 to 110 years of domestic reserves at current production levels, though these estimates will increase as more effective gas extraction and production methods are developed. Natural gas can also be produced renewably from waste materials and biomass, yielding net zero lifecycle emissions. Finally, natural gas is significantly less expensive than diesel, costing less per energy unit. For these reasons, natural gas is an ideal transition fuel leading us towards a cleaner, energy independent future.