»Compressed natural gas
ξ is in compressed form of natural gas (LNG is in liquefied form)
ξ has a lower cost of production and storage compared to LNG, which requires an expensive cooling process and cryogenic tanks
ξ requires a much larger volume than LNG to store the same mass of natural gas
ξ and the use of very high pressures (3000 to 4000 lbf/inē, or 205 to 275 bar)