ISO, SBTi, and the LCAW Verdict on Corporate Net Zero - with Kaya Axelsson

In this episode of The CDR Policy Scoop, Sebastian Manhart and Eve Tamme are joined by Kaya Axelsson, Research and Policy Fellow at Oxford Net Zero, just days after what she describes as the most anticipated Monday of her year: June 22, when both the ISO Net Zero Standard and the SBTi Corporate Net Zero Standard launched at London Climate Action Week. Kaya spent three years inside both standard-setting processes, and the conversation captures what this convergence moment actually means for companies, for carbon markets, and for carbon removal.

The episode opens on what Kaya calls the single global playbook. Her case: the two standards don't fundamentally contradict each other. ISO is wider in scope, internationally governed via WTO-compatible processes, and a natural tool for trade policy, green public procurement, and claims legislation, particularly in markets across Africa and Asia that SBTi has yet to reach. SBTi brings detailed near-term implementation guidance and the momentum of eleven thousand companies already signed up. Kaya explains how she sees companies using them together and what each does better than the other.

But she is not without concerns. The episode surfaces a significant one: a potential communication error in the SBTi standard that risks allowing companies to claim net zero alignment without ever setting a long-term net zero target. For CDR, the implications are direct. SBTi's decision not to require removals purchases before 2035 is, in Kaya's view, a cost-based rather than science-based call, and a missed opportunity to start scaling the supply of what companies will eventually need. ISO, by contrast, requires five-year removal milestones from the outset.

The conversation closes on what comes next: the governance of commodity certificates such as green steel, SAF, cement, which both standards now actively encourage companies to purchase. Kaya predicts this will be the defining debate at the next London Climate Action Week, and explains why getting the governance architecture right matters as much as the demand signal itself.

Links

• Eve Tamme: LinkedIn and Website
• Sebastian Manhart: LinkedIn and Website
• Kaya Axelsson: LinkedIn and Website
• ISO Net Zero Standard
• SBTi Corporate Net Zero Standard
• Robert Höglund & Claire Wigg’s: Exponential Roadmap InitiativeBuild the world your net zero target assumes

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