Transportation emissions are becoming a larger issue for state and federal governments. Policymakers and grant writers are primarily concerned with two forms of emissions: greenhouse gases (GHGs) and smog-forming NOx.
Greenhouse Gases (GHG)
The California Air Resources Board (CARB) uses lifecycle analysis to calculate the carbon intensity of a fuel pathway. Fossil CNG produces 14% less GHG emissions than Diesel.
Greenhouse gas reduction is even greater when renewable natural gas (RNG) is used to power a natural gas vehicle (NGV). See the RNG 101 section for more information.