| Rainbow Standard Rules V6.2 | | October 2024 |
| Rainbow Standard Rules V6.1 | - New appendix with IT Security requirements
- Terminology changes, reflected in the Glossary (notably discount factor and buffer pool)
| August 2024 |
| Rainbow Standard Rules V6.0 | Revisions made to align with CORSIA and ICROA requirements. Notably through: - Revised additionality assessment requirements and templates
- Revised permanence and reversal risks requirements and templates
- Revised ESDNH requirements and templates
- Alignment of GHG quantification with ISO14064-2:2019
| May 2024 |
| Rainbow Standard Rules V5.2 | - Restructure standard documentation to move all procedures to “Procedure Manual”
- Revised Environmental and social do no harm assessment method
- Baseline choice approach to be based on WBCSD
- Introduction of new appendix on Ramp up effects
| October 2023 |
| Rainbow Standard Rules V5.1 | - Clarification of the text on multidecadal monitoring
- Permanence risk assessment introduced
- Require all projects to undergo third party VVB validation and verification audit
| June 2023 |
| Rainbow Standard Rules V5.0 | - Restructure all eligibility criteria under 14 distinct criteria
- Added section on General LCA methodology
- Introduction of Key Impact Indicators in verification mechanism
- Revised rules of buffer and provision pool
| May 2023 |
| Rainbow Standard Rules V4 | - In-depth eligibility criteria and project requirements have been established, including Technology Readiness Level (TRL), Rebound effects, Leakage, and the "Do no harm" principle.
- A new "provision fund" has been introduced.
- Provided more a detailed procedure regarding Validation and Verification Body (VVB) audits.
| September 2022 |
| Rainbow Standard Rules V1, 2, and 3 | These represent the historical methodology used in the Rainbow Standard. Projects that were initially certified under these earlier versions have undergone a re-evaluation to ensure they meet the criteria of the program's most current version. | May 2022 |