The Greenhouse Gas Protocol has appointed Tim Mohin as its first Chief Executive Officer, marking a significant institutional shift for the world's leading framework for measuring and managing corporate greenhouse gas emissions. The appointment, announced on 28 April 2026, comes as the organisation has been mandated alongside the International Organization for Standardization to lead global harmonisation of greenhouse gas accounting under the COP30 Presidency through to the 2028 Global Stocktake. The development matters because the Greenhouse Gas Protocol underpins corporate climate disclosure for the vast majority of the world's largest companies, with 97 per cent of disclosing S&P 500 companies reporting their emissions using its standards.

 

The Significance of the Appointment

 

The creation of a dedicated Chief Executive Officer role represents a major step in the institutional maturation of the Greenhouse Gas Protocol. For more than 25 years, the organisation has been jointly led by the World Resources Institute and the World Business Council for Sustainable Development, with operational leadership provided primarily through programme directors rather than a single executive. The introduction of a CEO role signals that the Protocol is preparing for a phase in which its work will require stronger executive coordination, more direct engagement with regulators and a faster pace of standards development.

Geraldine Matchett, Chair of the Greenhouse Gas Protocol Steering Committee, framed the appointment as a natural step in institutional maturity, designed to meet rising expectations while sustaining the integrity and independence of the standards. The change reflects a recognition that as carbon accounting becomes central to regulation, corporate strategy and capital allocation, the organisation responsible for the underlying methodology requires governance and leadership structures comparable to those of major international standard setters.

 

The COP30 Mandate and the 2028 Global Stocktake

 

The most consequential element of the announcement is the role that the Greenhouse Gas Protocol has been asked to play in global carbon accounting harmonisation. Under the COP30 Presidency, the Protocol and the International Organization for Standardization have been mandated to lead the harmonisation effort through to the 2028 Global Stocktake under the COP Action Agenda. This places the organisation at the centre of one of the most important market shaping initiatives in international climate policy and corporate reporting.

The harmonisation task involves reconciling differences between the various national, regional and sector specific approaches to greenhouse gas accounting that have proliferated as climate disclosure rules have expanded. Inconsistencies between frameworks create significant compliance costs for multinational companies and reduce the comparability of emissions data across jurisdictions, which weakens the usefulness of the data for investors, regulators and policy makers. Successful harmonisation would substantially improve the reliability and decision usefulness of corporate climate disclosure globally.

 

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Tim Mohin's Background and Strategic Fit

 

Tim Mohin will join the Greenhouse Gas Protocol on 1 June 2026 and brings several decades of leadership experience across the intersection of corporate sustainability, policy and standards setting. He previously served as Chief Executive Officer of the Global Reporting Initiative, one of the most established international sustainability standard setters. He has also held senior sustainability leadership roles at major technology companies including Intel, Apple and AMD, providing him with direct experience of how corporate disclosure obligations operate in practice at large multinational organisations.

His earlier career included service in the United States Environmental Protection Agency and the United States Senate, giving him significant policy and regulatory experience to complement his corporate background. Most recently, he served as a Partner and Director of Climate and Sustainability at Boston Consulting Group. The combination of standard setting, corporate sustainability and policy experience is unusually well aligned with the requirements of the new role, which sits at the convergence of all three.

Mohin himself described the position as the most important climate infrastructure job in the world, framing the moment as a once in a generation restructuring of how the world accounts for carbon. The framing reflects the scale of the harmonisation task and the central role that the Protocol's standards play in regulatory regimes, corporate net zero strategies and global carbon markets.

 

How the Greenhouse Gas Protocol Has Strengthened Its Institutional Foundations

 

The CEO appointment follows a series of structural changes the Greenhouse Gas Protocol has implemented over the past two years to meet rising expectations. In 2024, the organisation established a Steering Committee and an Independent Standards Board, providing clearer governance and oversight of the standards development process. It has also deepened formal collaboration with the International Sustainability Standards Board, which produces the IFRS S2 climate disclosure standard, and with the International Organization for Standardization on aligned methodologies.

These institutional changes are designed to support a more ambitious standards publication timeline and to strengthen the Protocol's ability to engage across a rapidly evolving global landscape. The current standards review process, which includes the proposed updates to Scope 2 guidance that have generated significant corporate feedback, is one example of how the organisation is working to update its frameworks in response to changing market conditions and regulatory needs.

 

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The Continuity Built Into the Transition

 

Pankaj Bhatia, Global Director of the Greenhouse Gas Protocol, has led the initiative for more than 20 years and will transition out of his role as Mohin assumes the chief executive position. Bhatia expressed confidence in the future of the Protocol under the new leadership and emphasised the strength of the underlying team. The orderly handover from a long standing programme director to a newly recruited executive provides continuity for ongoing standards development while introducing the additional executive capacity needed to deliver on the expanded mandate.

Ani Dasgupta, President and Chief Executive Officer of the World Resources Institute, framed the appointment as strengthening the global role of the Protocol at a time of accelerating demand for consistent and credible emissions data. Peter Bakker, President and Chief Executive Officer of the World Business Council for Sustainable Development, emphasised Mohin's understanding of the needs of business and other stakeholders. Both organisations remain the institutional sponsors of the Protocol and continue to provide the governance backbone within which the new CEO will operate.

 

What the Appointment Signals for the Climate Disclosure Landscape

 

The wider significance of the appointment is what it indicates about the trajectory of corporate climate disclosure. Carbon accounting has moved from a voluntary corporate sustainability practice into a core element of regulatory compliance, capital allocation decisions and net zero strategy execution. The standards that govern how emissions are measured therefore influence trillions of dollars of investment decisions and regulatory outcomes. The Greenhouse Gas Protocol's installation of a dedicated CEO is consistent with the elevated importance of these standards in the global economy.

For corporate users of the Protocol, the appointment is likely to bring more focused engagement on the practical implementation challenges of the standards, particularly in areas such as Scope 2 reporting, value chain accounting and the integration of climate disclosure with mandatory financial reporting. For regulators and standard setters, the harmonisation mandate creates an opportunity to reduce the fragmentation that currently complicates international corporate climate disclosure. The progress made under Mohin's leadership over the period to 2028 will play a meaningful role in shaping how credible, comparable and decision useful corporate emissions data becomes during the most consequential phase of global climate policy implementation.

 

Source: Greenhouse Gas Protocol