and the consumption of products, including the project’s
contribution to nutrient reduction and GHG emission reduction.
While the estimation of reduced nutrient is relatively straightforward,
the study focused on the lifecycle carbon balance of the biogas option.
The contribution of the biogas option to reduce GHG emissions
is represented by the balance of CO2 equivalent (CO2eq), that is, the
difference between the lifecycle total GHG emission reductions and
total emission reduction. Thus, if the emission of CO2eq is less than
the reductions, the project can contribute to slowing down global
warming.