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Aquarry logo

Turns flooded abandoned open-pit mines (pit lakes) into durable carbon sinks by dissolving alkaline minerals so the water absorbs CO2 and precipitates it as limestone-like minerals, while remediating mining-influenced water and recovering metals from tailings.

Carbon Removal
Funding
Undisclosed seed; backers include the Grantham Foundation, Evergreen Climate Innovations, Deep Science Ventures, Avila Ventures, Creative Destruction Lab; $152K Colorado Advanced Industries grant (Nov 2025)
Stage
Seed
HQ
Golden, CO
Founded
2023

The Current Angle

A carbon removal play that sells to the mining industry's balance sheet as much as to carbon buyers: every pit lake is a closure liability, and Aquarry pitches lower closure costs and carbon-tax exposure plus recovered metals, with up to tens of millions of tonnes of CO2 storage per site and thousands of candidate sites globally. Co-founder Spencer Whitman is in NLR's West Gate lab-embedded entrepreneurship program in Golden.

Leadership

HQ location

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Last updated September 2026Sources: [1][2][3][4]