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deal · 2 November 2026
Frontier ↔ Eion
Frontier: a firm purchase of 78,707 t of enhanced rock weathering (agricultural) removal from Eion.
BuyerFrontier
SupplierEion
Tonnes78,707 t
Capture pathwayEnhanced rock weathering (agricultural)
Storage mediumunknown
Commitment typefirm
Deal structureofftake
Transaction evidenceFrontier, a carbon capture buying consortium founded by Stripe, Alphabet, Shopify, Meta, and McKinsey, has signed $33 million in offtake agreements with enhanced rock weathering (ERW) firm Eion. As per the agreement, Frontier buyers will secure the removal of 78,707 tons of CO2 between 2027 and 2030.
Source pathway descriptionenhanced rock weathering (ERW)
Delivery window2027-2030
NotesFrontier is described as a buying consortium founded by Stripe, Alphabet, Shopify, Meta, and McKinsey. The page describes Eion's general operations rather than this agreement specifically: it 'deploys ERW across the Southern and Midwestern regions of the US' using olivine, with CO2 converted to bicarbonate that is 'permanently stored in the ocean'. Location and storage are therefore left null for
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