Do you ever wonder why you hear so much about compressed natural gas (CNG) made from landfill gas but rarely hear of landfill projects involving liquefied natural gas (LNG)? It’s likely because almost all LNG is made from fossil fuel. There’s only one plant in the U.S. making LNG from landfill gas, and these projects are scarce for a few reasons.
The main driver for landfills to clean their gas to be made into transportation fuel is monetary, and CNG can cost as much as 50 percent less to produce than LNG. With both renewable fuel types, owners capitalize on renewable identification number (RINS) credits or, in California, low-carbon fuel standard credits (LCFS).
By Arlene Karidis, Waste 360.