Carbon Credit Reversal Risk
Definition
Carbon credit reversal risk is the risk that carbon previously credited as reduced or removed is later released back into the atmosphere.
Why it matters
Reversals can undermine buyer claims, trigger buffer-pool claims or replacement obligations, and reduce the economic value of a carbon project.
Technical details
Common reversal causes
Wildfire, pests, disease, drought, illegal logging, harvest, land conversion, and storage-system failure can reverse credited carbon.
Nature-based credits usually carry higher reversal exposure than engineered storage, though engineered projects have their own monitoring and operational risks.
Political and land-tenure disputes can create reversal risk even when the biology looks sound.
How to diligence
Review permanence term, insurance or buffer-pool mechanics, monitoring frequency, project geography, landowner obligations, replacement language, and whether reversals are treated as project-level or pooled-system losses.