Enhanced rock weathering measurement remains too immature for long-term offtakes
Phil Goodman · Inside Microsoft’s plan to remove 50 years of carbon emissions · Dec 12, 2025 · at 23:57
Phil Goodman, Director of Carbon Removal Portfolio at Microsoft, explains why enhanced rock weathering projects currently do not meet the quantification standard for long-term PPA-style offtake contracts.
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“The quantification methods just aren't there yet. So this has been true for enhanced rock weathering for us to date. It's something we're working through right now. Like, is, do we feel good enough about the quantification methods of carbon removal through enhanced rock weathering such that we can sign a long-term off-tick agreement that any measurement uncertainty can be managed in the course of an off-tick agreement?”
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