The Department of Energy (DOE) Clean Cities web site has a wealth of information and a resource for MWES.
You should look to see who your local Clean Cities Coalition is and get connected.
Simple Payback Calculator
Use the sliders or enter your values in the fields below to determine the number of years needed to recoup your investment. Go to "CNG Resources" and "Payback Calculator" for a more detailed calculator.
Payback Years:
CNG Truck Premium:
Fuel Savings per Gallon:
Gallons Used per Year: