By Mark Omara and Joe Rudek
Multiple states are exploring the use of renewable natural gas to decarbonize their gas systems. Renewable natural gas tends to be a generic term that describes a variety of fuels, including hydrogen, synthetic gas and biogas.
As we explained in an earlier blog, not all biogas (a biomethane precursor) is created equal. In order to provide climate benefits, renewable natural gas fuels must result in a net reduction in methane emissions, since methane is a very potent greenhouse gas that is rapidly increasing the rate of near-term global warming. The simple label of “bio” on the methane does not mean that it is automatically renewable or that it provides climate benefits. Both the selection of source of the organic fuels and the injection methods must be done correctly to provide climate benefits.
But what does “done correctly” mean?