• Rock Flour

  Participated · Seed · Sep 2025

  Rock Flour Company (RFC) taps nutrient-rich glacial rock flour naturally created by Greenland’s glaciers to create a sustainable plant nutrient that can both raise agricultural productivity and sequester CO₂. Field trials in Ghana and Denmark, funded by the Novo Nordisk Foundation, have shown crop-yield increases of up to 30 percent while allowing farmers to cut back on synthetic fertilizers. The company plans to deploy its first commercial project in Greenland, run additional long-term pilot programs, and secure large-scale extraction permits. Funds will also support partnerships with growers and agribusiness groups and accelerate R&D on processing innovations to raise the profile of glacial rock flour in regenerative farming. With Greenland’s glaciers producing more than a billion tons of rock flour annually, RFC positions itself to transform cropland into lasting carbon sinks. The company’s operations are headquartered in Greenland, and it has already attracted a roster of climate-focused investors. RFC’s recent €6.1 million seed infusion provides its initial external capital to fast-track commercialization and scale global outreach.

• sequestra

  Participated · Seed · Feb 2025

  Sequestra develops carbon mineralization processes to enable permanent CO2 storage by converting widely available, underutilized mineral materials. The company has spent its initial period in laboratory research and development and is now moving into pre-industrial pilot projects and early commercial deployments. Sequestra has assembled a multidisciplinary team with expertise in process engineering, chemistry, automation, and artificial intelligence to advance its technology. Financially, it recently raised a €3 million seed round with backing from VSE Beteiligungs-GmbH and support from FFG Austrian Research Promotion Agency, Austria Wirtschaftsservice, and earlier backers including Carbon Drawdown Initiative and Climate Founders. The company plans to use the funding to scale its technology and begin executing its first commercial mineralization projects. Its stated mission is to unlock large-scale CO2 storage potential from industrial materials and to position itself within the carbon removal and climate infrastructure ecosystem.

• CREW Carbon

  Participated · Seed · Oct 2024

  CREW Carbon offers a process intensification solution for wastewater treatment that uses strategically-sourced alkaline minerals to optimize pH and alkalinity, improving biological performance, settleability, and plant capacity while permanently sequestering CO2. Since beginning commercial operations in 2024, CREW has deployed at nearly 10 facilities across the U.S. and Europe and secured long-term RFPs with utilities. The company has captured over 2,000 tons of CO2 and secured more than $33 million in carbon removal offtake agreements, delivering verified carbon removal credits to corporate buyers. CREW has developed proprietary measurement, reporting, and verification (MRV) capabilities and is developing a scalable analytics platform to provide operational insights and process optimization. Financial and strategic support from the Series A will be used to scale deployments, expand customer engagements, and add key hires in wastewater process, technology, supply chain, and business development.

• Cotierra

  Participated · Seed · Mar 2024

  Cotierra (formerly Terra Preta) builds biochar reactor technology and a robust monitoring, reporting, and verification (MRV) system tailored to coffee farms in the Global South. Its core product converts coffee tree residues into biochar and reapplies it to plantations to sequester carbon for centuries, restore soil health, and boost productivity. The company emphasizes decentralized deployment to demonstrate tangible on-the-ground benefits, including reduced supply-chain emissions and the creation of traceable, permanent carbon-removal credits. Cotierra intends to accelerate product development and field demonstrations in Colombia. It will use the recent funding to speed up development of both hardware (biochar reactors) and its MRV capabilities. The solution is positioned specifically for the unique conditions of the Global South and targets regenerative agriculture transformation in coffee.

• InPlanet

  Participated · Seed · Jan 2023

  InPlanet develops enhanced rock weathering (ERW) solutions for tropical agriculture, spreading locally sourced rock powders on farmland to accelerate natural CO2 mineralization and improve soil fertility. The company pairs deployments with rigorous measurement, reporting and verification (MRV) and a scientific program that samples solid, liquid and gaseous phases and uses carbon mass balance, trace element and DIC measurements to quantify removal. InPlanet aims to both remove atmospheric CO2 and reduce farmers' reliance on synthetic fertilizers by boosting nutrient availability and crop yields. The team plans to scale MRV capabilities and operational deployments, targeting large‑scale rock spreading in the tropics. Operational targets in the announcement include spreading 200,000 metric tons of rock powder to capture 40,000 metric tons of CO2 and keeping on pace to remove 1 million metric tons of CO2 by 2026. The company has publicly disclosed prior pre‑seed funding and is positioning itself as a science‑driven CDR and agro‑tech provider in tropical markets. InPlanet deploys enhanced rock weathering by supplying and spreading finely ground rock powder on tropical agricultural land to accelerate natural CO2-consuming chemical reactions. The company positions the rock powder as a decarbonised soil amendment that can help restore tropical soils and substitute for limestone, pesticides and synthetic fertilisers. InPlanet plans to build a scalable enhanced rock weathering station in the tropics and, with the current program, will spread 50,000 tonnes of rock powder to remove an estimated 10,000 tonnes of CO2. The startup aims to scale toward preventing carbon megatonnes from entering the atmosphere by 2030. InPlanet is Germany/Brazil-HQed and works with scientific partners at the University of São Paulo and Universidade de Brasília. It participates in the Frontier Batch and ClimAccelerator programmes and plans to use new funding to grow its team.

No current team members are available.