# Carba

> Carba is a Minneapolis-area climate-tech company that turns low-value waste biomass - dead trees, yard waste, and other biogenic scraps - into a stable, charcoal-like material called biocarbon (biochar). Using a patent-pending autothermal pyrolysis reactor and an anoxic (oxygen-starved) burial method, Carba locks carbon away for a certified 1,000+ years, most notably inside existing landfills where the material can also filter pollutants. The company sells the resulting permanent carbon-removal credits - including a five-year, 44,000-tonne deal with Microsoft - and aims to remove a billion tons of CO2 by 2035.

- **Founded:** 2021
- **Headquarters:** Eden Prairie, Minnesota, United States
- **Founders:** Andrew Jones (CEO & Co-founder), Paul Dauenhauer (Co-founder & Senior Advisor), Nick Halla (Co-founder / Founding Advisor)
- **Team size:** ~19 employees
- **Products:** Carba Reactor, Permanent Carbon Removal Credits, Biocarbon for Industry, Landfill Carbon Storage & Remediation
- **Notable:** Signed a five-year, 44,000-tonne carbon removal credit agreement with Microsoft (2025), Awarded a $7 million U.S. Department of Energy grant under the Carbon Negative Shot program, Methodology certified by Isometric for 1,000+ year carbon durability

## Products & services

- **Carba Reactor** — A proprietary, modular, patent-pending autothermal pyrolysis reactor that converts waste biomass into high-carbon biochar with greater energy efficiency and no external energy input.
- **Permanent Carbon Removal Credits** — Registry-certified carbon dioxide removal credits (via Isometric) with 1,000+ year durability, generated by charring biomass and burying it using Carba's anoxic burial method.
- **Biocarbon for Industry** — High-durability biocarbon sold as a fossil-input substitute for tires/rubber, metals and steel, asphalt and concrete (bitumen replacement), and as filtration media.
- **Landfill Carbon Storage & Remediation** — Biochar deployed as alternate daily cover in landfills, where it stores carbon permanently while potentially reducing odors and adsorbing pollutants such as PFAS, mercury, lead, PCBs, dioxins and furans.

## Achievements

- Signed a five-year, 44,000-tonne carbon removal credit agreement with Microsoft (2025)
- Awarded a $7 million U.S. Department of Energy grant under the Carbon Negative Shot program
- Methodology certified by Isometric for 1,000+ year carbon durability
- Won the 2023 MN Cup Grand Prize
- Recognized with the 2023 Neil Armstrong Award of Excellence
- Won a Minnesota sustainable chemistry prize (Minnesota Pollution Control Agency)
- Launched first commercial facility in Burnsville, Minnesota in Q4 2025
- Raised $6M investment round led by Rusheen Capital and CanopyGen (Dec 2025)

## Latest updates

- **2025-12** — Closed a $6M investment round led by Rusheen Capital Management and Canopy Generations Fund.
- **2025-12** — Brought first-of-its-kind biocarbon technology online at its Burnsville, Minnesota facility.
- **2025-04** — Announced a five-year agreement to deliver 44,000 tonnes of carbon removal credits to Microsoft.
- **2025-01** — Secured $2.5M in project financing and program-related investments from Minnesota Climate Innovation Finance Authority, JLL Foundation, and Venn Foundation.

## Links

- Website: https://carba.com
- LinkedIn: http://www.linkedin.com/company/carbainc

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Profile page: https://yespress.io/carba
Published by YesPress — https://yespress.io
Last updated: 2026-07-06