We work with a multidisciplinary group of top scientific experts to help us evaluate promising carbon removal technologies. You can explore our growing portfolio of projects below or review our selection process here, or read our purchasing perspectives.
Dollars contracted
$28.9M
Tons contracted
57,945
Project locations
We're building a diverse portfolio to maximize the likelihood of meeting our global climate goals.
Project locations
CarbonRun adds crushed limestone to rivers to raise their pH, storing CO₂ as dissolved bicarbonate in the river and ultimately in the ocean. In addition to CO₂ removal, CarbonRun’s work also benefits river ecosystems locally by increasing the pH.
Planeteers uses a novel pressure-swing process to convert limestone, a cheap and abundant feedstock, into hydrated carbonate minerals, a fast-dissolving material that can be a scalable feedstock for a range of carbon removal approaches. Their pilot project mixes this material into water treatment plant outflows where it reacts with CO₂ in the air to form durable bicarbonate. This approach is easy to measure and leverages existing infrastructure, reducing costs.
Planetary harnesses the ocean for scalable removal. They introduce alkaline materials to existing ocean outfalls like wastewater plants and power station cooling loops. This speeds up the sequestration of CO₂ safely and permanently as bicarbonate ions in the ocean. Planetary then verifies the removal through advanced measurement and modeling techniques.
