Rock-based processes such as enhanced rock weathering store carbon through geochemical reactions. The protocol sets how that storage is quantified and verified.
Versions of the official text these rules cover: 3.0 (Open Review, February 2025)
Additionality: the project must meet the protocol's additionality criteria (RSC §3.2, p. 20). One criterion is a declaration that carbon finance is a significant part of its business case. CarbonMeld reads them in the documents. CM-F-ONCRA-ROCK-STORED-CARBON-ADDITIONALITY
Grid emission factor: the methodology counts the energy of mining, grinding and transport in a life-cycle assessment (RSC §3.1.5, p. 19). CarbonMeld reads it in the project's documents. CM-F-ONCRA-ROCK-STORED-CARBON-GRID-EF
Durability of the storage: the methodology sets rules for it (RSC, p. 16). CarbonMeld reads it in the project's documents. CM-F-ONCRA-ROCK-STORED-CARBON-DURABILITY-MEASUREMENT
Tracking of the end use: the methodology sets rules for it. CarbonMeld reads it in the project's documents. CM-F-ONCRA-ROCK-STORED-CARBON-END-USE-TRACKING
Leakage: the methodology subtracts direct and indirect increases in emissions (RSC §3.1.3, p. 18). Our current method does not assess it. CM-F-ONCRA-ROCK-STORED-CARBON-LEAKAGE
Buffer pool: the methodology sets rules for it (RSC, p. 21). Our current method does not assess it. CM-F-ONCRA-ROCK-STORED-CARBON-BUFFER
Permanence and reversals: the methodology sets rules for it (RSC, p. 15). Our current method does not assess it. CM-F-ONCRA-ROCK-STORED-CARBON-PERMANENCE-REVERSAL
No legal requirement for the activity: the methodology sets rules for it (RSC §3.2, p. 20). Our current method does not assess it. CM-F-ONCRA-ROCK-STORED-CARBON-REGULATORY-SURPLUS
Social safeguards and consent of communities (FPIC): the methodology sets safeguards for the environment (RSC §3.4, p. 21). It does not mention consent of communities. Our current method does not assess it. CM-F-ONCRA-ROCK-STORED-CARBON-SAFEGUARDS-FPIC
The criterion does not apply to this methodology. Our current method never counts it as a gap.
The general rules apply as well. Read the general rules.
Browse 5 published projects using ONCRA-PROTOCOL-ROCK, listed alphabetically. There is no ranking for this methodology yet: it appears here automatically once 5 of its projects are rated. Open a project to view its registry details and the analysis available for that project.
