What is the Verra buffer pool and when is it used?

The Verra buffer pool is used to protect issued VCUs when a project generates a net carbon loss across a monitoring period. If the size of an accidental loss detected during a monitoring period is greater than the measured emission removal, then the monitoring period will generate a net carbon loss. In this instance Verra will retire buffer credits to offset the net loss.

If the size of an accidental loss detected during a monitoring period is less than the measured emission removal, then the monitoring period will generate a net carbon removal. In this instance Verra will issue VCUs for the net removal, and the Verra buffer pool will remain unused.