A Milestone Moment at New York Climate Week
A Milestone Moment at New York Climate Week
On September 9, 2025, during New York Climate Week, the International Organization for Standardization (ISO) and the Greenhouse Gas Protocol (GHG Protocol) announced a landmark partnership to harmonize their greenhouse gas (GHG) emissions accounting and reporting standards.
Sergio Mujica, ISO Secretary General, emphasized the significance of this collaboration:
“this is a new era for the carbon accounting landscape, and both organizations are thrilled to be working together.”
Learn more about GHG Protocol:
What is GHG Protocol and How Can You Ensure Compliance? | CEMAsys
Why This Partnership Matters
In a world grappling with climate inaction and fragmented standards, this partnership is more than symbolic; it’s strategic.
Climate news often fails to resonate with the public due to its complexity and lack of accessible narratives. But the urgency is real. According to a report led by Tim Lenton of the Global Systems Institute, the planet is nearing irreversible tipping points, with the 1.5°C warming threshold likely to be breached.
“Current policies are designed for gradual changes, not abrupt, irreversible shifts,” warns Manjana Milkoreit, researcher at the University of Oslo.
This collaboration directly addresses a critical barrier to climate progress: fragmentation in carbon accounting standards. By aligning methodologies, ISO and GHG Protocol are enabling more credible, comparable, and actionable emissions data—a vital tool for investors, regulators, and sustainability leaders.
At Cemasys we think that this collaboration tackles one of the biggest challenges in climate action: the fragmentation of carbon accounting standards. By aligning methodologies, ISO and GHG Protocol are helping create emissions data that’s not just more credible and consistent — but also more useful for the people who rely on it every day. Whether you're an investor, a regulator, or someone working hands-on with sustainability, this kind of clarity and comparability is a game-changer.
Elisa Dahl Walderhaug, Managing Diractor CEMAsys Norway
What’s Changing: Harmonized Standards and New Tools
According to the official press release, the partnership will deliver:
This unified approach will streamline compliance, reduce confusion, and enhance trust across borders and sectors.
The ISO 1406X family, already foundational in legislation and regulation, will now be complemented by GHG Protocol’s widely adopted standards used by initiatives like CDP, SBTi, and ISSB.
A Timely Step Toward COP30 and Beyond
As the world prepares for COP30, this partnership sets the stage for more ambitious and transparent climate action.
“A unified set of standards for GHG emissions reporting will help raise ambition, enable credible net-zero pathways, and build trust across borders,” said Dan Ioschpe, COP30 High-Level Champion.
Pratik Hariharan is an Outbound Marketing Specialist at CEMAsys, driving growth in North America through strategic outreach and compelling content. With a master’s in Business and Management from the University of Waikato, he blends creativity, analytical thinking, and cross-cultural insight to craft clear, engaging narratives around sustainability. Pratik’s diverse background spans communications, advocacy for DEI, and technical marketing across industries including biotech and energy. At CEMAsys, he’s passionate about making climate data meaningful—helping businesses turn insights into action.
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