CALCITE.
We capture CO₂ from the air and turn it to stone. Measured, verified, permanent for over a thousand years.
CUMULATIVE · Q2 2026
47,200 t
CO₂ permanently removed and mineralized · verified to the Puro.earth standard · cumulative through Q2 2026
Permanence is not a promise here. It is a rock. We publish the figure net of every gram of energy our plants consume.
METHOD / CAPTURE → STONE
01
CAPTURE
Fans pull air across a solid sorbent.
02
CONCENTRATE
Low-grade geothermal heat releases pure CO₂.
03
INJECT
CO₂ dissolved in water, pumped into basalt.
04
MINERALIZE
Reacts with rock to form solid carbonate.
VERIFICATION / MRV
THE SPEC SHEET A BUYER AUDITS.
| Metric | Calcite | Method / Standard |
|---|---|---|
| Permanence | >1,000 yr | Geologic mineralization, Puro.earth CORC |
| Net efficiency | 91% | Tonnes stored ÷ tonnes-equivalent energy in |
| Leakage | <0.1% | Post-injection monitoring wells, 24-mo |
| Additionality | Verified | Third-party LCA, ISO 14064-2 |
| Cost trajectory | $280 → $90 | Spot today → contracted 2030 offtake / tonne |
PRICING / USD PER TONNE
A promise can be revised. A ROCK cannot.
— Dr. Ingrid Solveig, Founder & Chief Scientist, Calcite
REMOVAL PURCHASED BY
- Atlas ComputeModel Lab
- Northwind PayFintech
- Vega AirAviation
- Sable CloudInfrastructure
- Meridian BankFinance
- Pyxis FoodsConsumer
“Calcite was the only supplier whose verification page our climate team didn’t send back with questions.”
A studio piece by ALO Design Pros.
Swiss precision as the material, for missions whose proof is the verification.
Buying removal or building capacity? Our verification page answers first. Bring your sustainability team — they will run out of questions.
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