Compressed Natural Gas (CNG) is natural gas fuel that has been compressed to less than 1% of its volume (at standard atmospheric pressure), making naturally odorless, colorless and gaseous. CNG is inexpensive to produce and store making it ideal for numerous fleet sizes: refuse trucks, buses, shuttles, taxis and heavy-duty trucks. – See more at: https://www.cleanenergyfuels.com/fuels/compressed-natural-gas-cng/#sthash.22QQ3SfT.dpuf
Liquefied Natural Gas (LNG) is natural gas fuel that has been changed into a liquid state by cooling it to -162°C though a refrigeration process at a liquefaction plant. LNG is naturally clear, non-toxic and odorless.
LNG tanks are fuel efficient and light. Less tank weight means more fuel storage, making LNG ideal for long-haul trucks that carry heavy loads or travel long distances between stops. LNG is also recommended for our rail, marine, and off-road vehicles. – See more at: https://www.cleanenergyfuels.com/fuels/liquefied-natural-gas-lng/#sthash.JxrEZco0.dpuf