GHG Project Effects
Definition
GHG Project Effects are changes in GHG Emissions, removals, or storage caused by a project activity. There are two types of GHG effects
- primary effects and
- secondary effects
Primary Effects
A primary effect is the intended change caused by a project activity in GHG emissions, removals, or storage associated with a GHG source or sink. Each project activity will generally have only one primary effect. The primary effect is defined as a change relative to Baseline Emissions. which are determined using a suitable baseline methodology. Primary effects are identified for each project activity.
Secondary Effects
A secondary effect is an unintended change caused by a project activity in GHG emissions, removals, or storage associated with a GHG source or sink. Secondary effects are typically small relative to a project activity’s primary effect. In some cases, however, they may undermine or negate the primary effect. Secondary effects are classified into two categories:
- One-time effects: Changes in GHG emissions associated with the construction, installation, and establishment or the decommissioning and termination of the project activity.
- Upstream and downstream effects: Recurring changes in GHG emissions associated with inputs to the project activity (upstream) or products from the project activity (downstream), relative to baseline emissions.
