About Emissions Trading> Calculating GHG Emissions> Calculating MMTCDE
Calculating MMTCDE

To arrive at MMTCDE, multiply the weight of the gas times it's global 
warming potential (GWP). The weight of gas is calculated in grams, and one 
teragram (Tg) equals a million metric tons.

MMTCDE = (Tg of gas) x (GWP)