The carbon intensity (CI) of an energy source includes the total emitted greenhouse

gases associated with its production and use and is measured as a ratio of

the equivalent amount of CO2 emitted to the amount of energy it contains.

Less CO2 Produced

=     Smaller CI     =

Greener Fuel

Today, motor fuels include gasoline, ethanol, diesel, biodiesel and renewable diesel,

and natural gas. But renewable natural gas, which is composed primarily of methane,

is one of only a few carbon negative fuels – it removes more greenhouse gases from

the atmosphere than it creates!

Common Fuels on a CI Scale: