The Glasgow Rulebook for Article 6.2

The Long Road to Glasgow

Article 6 was fully adopted in 2015, but it notoriously contained only the vaguest outlines of how international carbon cooperation would function. It took six grueling years, two failed climate summits, and a global pandemic to finally establish the operating manual.

• 2015 (COP21, Paris): Article 6.2 establishes the concept of ITMOs, but leaves all operational mechanics completely blank.
• 2018 (COP24, Katowice): Negotiators passionately adopt the broader Paris Rulebook, but drastically fail to agree on Article 6.
• 2019 (COP25, Madrid): Negotiations implode again over vicious disagreements regarding the carry-over of surplus Kyoto-era credits.
• 2021 (COP26, Glasgow): Facing immense pressure, countries successfully adopt Decision 2/CMA.3, widely known as the Glasgow Rulebook. It boldly prohibited the use of legacy CDM credits, resolving the deepest friction point.

What the Glasgow Rulebook Requires

The Glasgow Rulebook established five monumental pillars for participating nations:

1. Authorization

Countries intending to export ITMOs must forcefully issue a formal authorization. This written declaration legally confirms that:

• The ITMOs are expressly approved for use toward an acquiring country's NDC or CORSIA.
• The host country absolutely commits to applying a corresponding adjustment.
• The emission reductions rigorously meet all quality criteria.

2. Corresponding Adjustment Requirements

The rulebook famously codified the exact mechanics for corresponding adjustments (CAs):

• CAs are aggressively mandatory for any ITMOs used toward NDC achievement.
• CAs must be prominently recorded in the host country's Biennial Transparency Report (BTR).
• Revisions must flawlessly align with national GHG inventory methodologies.

3. Reporting Obligations

Transparency serves as the ultimate cornerstone. The rulebook created a rigorous three-tier reporting gauntlet:

1. Initial Report: Submitted before any ITMO transfers begin, clearly defining the country's baseline inventory and accounting framework.
2. Annual Information: A detailed spreadsheet submitted yearly logging all ITMO transactions, quantities, and matching CAs.
3. Biennial Transparency Report (BTR): A comprehensive audit submitted every two years showcasing massive accounting tables that explicitly track NDC progress.

4. Technical Expert Review Process

The UNFCCC heavily deployed expert teams to execute Technical Expert Reviews (TER). These diligent reviewers extensively cross-examine country reports to confirm:

• Accounting strictly aligns with the Rulebook.
• CAs are mathematically flawless.
• Registry records match reported quantities perfectly.

If reviewers uncover nasty discrepancies, they forcefully flag the ITMOs to severely damage the offending country's market reputation.

5. Registry Requirements

Countries were granted extensive flexibility regarding registries. They can freely utilize:

• Their own deeply customized national registry.
• A powerful third-party registry gracefully operated by organizations like Verra or Gold Standard.
• The centralized UNFCCC International Registry.

Regardless of the platform, the registry must violently prevent double counting and seamlessly connect to the UNFCCC's centralized reporting infrastructure.

What Glasgow Left Unresolved

Despite its immense success, negotiators blatantly punted several massive issues:

• Voluntary Cancellations: It remained frustratingly ambiguous whether private entities retiring credits for marketing required CAs.
• Non-GHG Metrics: The accounting conversions for non-CO2 units were left totally unwritten.
• Multilateral Approaches: Rules were meticulously scoped for bilateral deals, ignoring wildly complex multi-country programs.

Post-Glasgow Developments

Subsequent COPs relentlessly continued hammering out the missing details:

• COP27 (Sharm el-Sheikh, 2022): Formally clarified that ITMOs used solely for voluntary corporate cancellation technically bypass mandatory CAs, though the host country undeniably loses the right to apply them to its NDC.
• COP29 (Baku, 2024): Monumentally resolved the first-transfer dispute. CAs must unequivocally be applied exactly when the unit leaves the host account. Crucially, Baku codified irrevocability: once an ITMO is transferred, the host country notoriously cannot cancel the authorization to regain the accounting benefit.

The Glasgow Rulebook currently represents humanity's best attempt to operate carbon markets without fabricating accounting fictions. While it relies heavily on honest national reporting, it successfully creates a fully operational system required to massively scale global climate finance.