March 2023 Climate Progress Update

Apr 9, 2023 | Climate Progress

Since June 28, 2021, the contributions we’ve made have helped new carbon removal companies make significant progress. Most recently, we purchased our largest round of carbon removal to date, consisting of nine new companies. We were the first customer for 89% of them.

Meet the new projects

Ecobyte and Frontier partnered with 50+ scientific experts to select nine new carbon removal projects.

Arbor ($500 / ton) converts biomass waste to products—such as electricity—and stores the CO₂ underground. Their technology works for different biomass types and features an advanced turbine that maximizes efficiency.

Arca ($1,318 / ton) uses mining waste to convert CO₂ into carbonate rocks. With autonomous rovers working directly at the mine site, their approach removes more CO₂ and avoids the cost and emissions of moving material.

Captura ($984 / ton) uses an electrochemical process to separate acid and base from seawater. The acid removes CO₂ in seawater for underground injection and the base is used to treat and return the water safely to the ocean.

Carbon To Stone ($394 / ton) is developing a new form of direct air capture, in which a solvent that binds CO₂ is regenerated by reacting with alkaline waste materials, reducing the amount of energy needed.

Cella ($228 / ton) is storing CO₂ permanently by injecting it into volcanic rock formations together with saline water and geothermal brine waste. Their approach lowers CO₂ storage cost and minimizes environmental impacts.

CREW ($810 / ton) is building container-based reactors that speed up the weathering of alkaline minerals in order to convert CO₂ from wastewater into bicarbonate ions that can be safely and permanently stored in the ocean.

Inplanet ($480 / ton) applies silicate rock powders on farmlands in Brazil to permanently sequester CO₂ and regenerate soils. The warmer and wetter conditions lead to faster reactions, which are monitored and reported publicly.

Accelerating scientific exploration

With your support, two companies received $500K of research grants to advance frontier technologies.

Kodama Systems and the Yale Carbon Containment Lab are testing the feasibility of removing carbon by burying waste woody biomass underground using specialized chambers to prevent decomposition and undesired methane leakage.

Nitricity is integrating carbon removal into a new process that produces clean fertilizer. They combine carbon-neutral nitrogen compounds, phosphate rock and CO₂, producing fertilizer and storing CO₂ durably as limestone.