Executive Summary
On 9 September 2025, the Greenhouse Gas (GHG) Protocol (WRI/WBCSD) and the International Organization for Standardization (ISO) announced a strategic partnership to harmonize their greenhouse-gas standards and co-develop new, joint standards for corporate, product and project-level GHG accounting. The collaboration aims to create a single, coherent global language for emissions accounting—reducing fragmentation, improving comparability, and lowering reporting burdens for companies and regulators. Early reactions praise the move for clarity and scale, while some NGOs and market participants urge safeguards to keep rigor, scientific integrity and accessibility.
1. Background — Why Harmonisation Matters
Historically, multiple frameworks evolved in parallel: the GHG Protocol—widely used for corporate and value-chain accounting—and ISO 14064 / 1406x standards, which provide formal international guidance for quantification, monitoring, and verification. Differences in boundaries, market-based treatment, and assurance approaches have created inconsistencies and inefficiencies. The partnership seeks to unify these foundations to enable global policy alignment and credible climate disclosures.
2. Advantages and Disadvantages
Advantages: Greater consistency, reduced reporting burden, regulatory alignment, improved Scope 3 guidance, and increased investor confidence.
Disadvantages: Possible dilution of rigor, short-term transition costs, governance challenges, and risk of competing initiatives that could reintroduce fragmentation.
3. Comparison with Other Frameworks
Compared to CDP, GRI, ESRS, and ISSB frameworks, the harmonised ISO/GHG Protocol aims to provide a unified technical foundation for accurate emissions measurement. CDP will benefit from simplified reporting inputs, while GRI and ISSB will rely on harmonised data for consistent sustainability disclosures.
4. Implementation & Recommendations
Corporates should begin aligning inventories and verification systems with both ISO and GHG Protocol crosswalks, engage in consultations to uphold transparency, and strengthen data infrastructure. Regulators should reference the harmonised standard for coherence while ensuring oversight integrity.
5. Advice from Dr. Samiullah Khan
“As global frameworks converge, organisations must remember that harmonisation is not just a compliance exercise—it is a catalyst for transformation. The true value lies in integrating credible carbon accounting into business strategy, not merely reporting. In the UAE and across emerging economies, aligning with harmonised GHG standards will enable companies to attract green finance, meet evolving ESG disclosure expectations, and position themselves for a low-carbon economy. My advice is clear: treat harmonisation as an opportunity to elevate corporate sustainability governance—strengthen internal data systems, train multidisciplinary teams, and engage transparently with stakeholders. The winners of this transition will be those who embed integrity, innovation, and accountability into every tonne of CO■ they measure.”
