ISO's proposed net zero standard has failed the member vote required to advance to final publication in its current form, the Geneva-based International Organization for Standardization has confirmed, capping a 12-week consultation that drew nearly 5,000 comments — a record level of feedback for the process.

The draft, designated ISO 14040 (referred to by the ISO spokesperson as ISO/DIS 14060 in committee terms), did not reach the approval threshold needed to move forward unchanged. "ISO/DIS 14060 did not receive the level of approval required to advance in its current form," an ISO spokesperson wrote in an email confirming the outcome.

Media reports citing sources familiar with the process indicate that opposition came from fossil fuel-producing countries. ISO does not disclose how individual member bodies voted or their stated reasons.

The result is a setback for a document the corporate disclosure world has watched closely. Released in June 2026 after a two-year development process, the standard was designed to give companies globally consistent guidance for building credible net zero transition plans — including requirements for demonstrating that strategy, targets and actions are compatible with reaching net zero, and that progress toward global net zero under the Paris Agreement is verifiable.

The obligations built into the draft were concrete. Aligned organizations would have to set interim and long-term emissions reduction targets and publish a transition plan within two years of setting a target. That plan would need to cover timelines, integration of the strategy into the business model, and measurement and reporting on progress, together with validation and verification requirements.

The arithmetic behind the failure is fixed in ISO's own rules. Draft standards require approval by two-thirds of participating members of the relevant technical committee, and no more than one quarter of votes cast may be negative. The draft fell short on that count following the consultation run through ISO's national members in more than 170 countries.

ISO framed the record response as a mark of engagement rather than a defeat. "ISO/DIS 14060 brought a vast spread of experts and stakeholders into the process from across the world and demonstrates that the ISO system can mobilize expertise and involve society at large in an addressing an issue that concerns everyone," the spokesperson said. "The nearly 5,000 comments are evidence of extraordinary engagement and the capacity of ISO to generate discussions and collect valuable feedback."

The committee will now consider the consultation feedback and "determine the appropriate next steps for the project," the spokesperson added — language that leaves open both a revised draft for another vote and a longer timeline.

For companies building net zero transition plans, the delay matters. Without a finalized international standard, the market continues to rely on a patchwork of national guidance and voluntary frameworks for what counts as a credible plan, with no ISO-backed verification anchor. The near-5,000-comment haul signals how contested that definition has become.

What happens next rests with the technical committee's revision decision. The milestone to watch is whether a revised draft returns to member vote — and whether it survives the two-thirds approval threshold that the June 2026 text could not.