Eion Scoops Up $3M Series A Extension

Eion, a carbon removal company turning the proven science of enhanced rock weathering (ERW) into a scalable climate solution, today announced that it has closed $3 million in Series A extension funding from agricultural distributor Growmark, AgFunder, Ridgeline, Trailhead Capital, Overture Partners, Mercator Partners, Exelon Foundation, and others.

The additional capital will be used to build on growing commercial traction, deliver against new contracts, and further invest in R&D. Through its partnership with Growmark, Eion has the network to access millions of acres across the US and is beginning to work with farmers in the Midwest to deploy rock weathering at a greater scale.

Eion is a carbon removal company responsibly scaling enhanced rock weathering (ERW) on agricultural lands. It holds an industry-first patent for directly measuring the carbon removed by mineral weathering in soils using immobile trace elements.

Combining scientific rigor with agricultural know-how, Eion fits into routine farming practices to unlock scale without compromising safety and rigor. That includes using olivine, a naturally abundant mineral that balances soil pH while efficiently absorbing carbon dioxide, and relying on routine soil samples and standard equipment to measure carbon removal and monitor soil conditions.

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