Quantifying GHG Reductions

Definition

Quantifying GHG Reductions is a procedure for compiling and reporting an aggregate GHG reduction from a GHG Project. The following is according to

• The standard reporting unit is in tonnes of CO2 Equivalent, denoted as (t CO₂eq)
• The total GHG reduction is the sum of annual GHG Project Activity reductions PA_t for the time horizon of the project
• The time period unit is a year (t)
• The project activity index is (z)
• The primary effect index is (p)
• The secondary effect index is (s)

$\mbox{GHG Reduction}_T = \sum_t \mbox{PAR}_t$

Project Activity Reduction (PAR)

$\mbox{PAR}_t = \mbox{PE}_t + \mbox{SE}_t$

Primary Effects

Primary Effects is the delta (absolute reduction from baseline emissions) induced by the project activity emissions (PAE)

$\mbox{PE}_t = \sum_p \mbox{BE}_t - \mbox{PAE}_t$

Annual Quantification of GHG Reduction

$\mbox{R} = \mbox{BE} -\mbox{PE}$

Where:

• $\mbox{R}$ are the Annual GHG reductions for the entire GHG project
• $\mbox{BE}$ are the total annual baseline emissions for all the GHG project's primary effects
• $\mbox{PE}$ Total annual GHG project emissions

Annual Baseline Emissions

$\begin{align} \mbox{BE} &= [\mbox{Process Emissions}] + [\mbox{Combustion Emissions}] \\ & = [C_y \mbox{CF}_b \mbox{EF}_p ] + [C_y \mbox{CF}_b E \mbox{EF}_c] \end{align}$

Project Emissions

$\begin{align} \mbox{PE} &= [\mbox{Process Emissions}] + [\mbox{Combustion Emissions}] \\ & = [C_y \mbox{CF}_p \mbox{EF}_p ] + [F_y \mbox{CF}_b \mbox{EC}_c \mbox{EF}_c] \end{align}$

See Also

• GHG Reporting Requirements