Minnesota-based Carba has successfully secured $6 million in a funding round led by Rusheen Capital Management and Canopy Generations Fund (CanopyGen). This injection of capital includes participation from Groove Capital, the Demos Fund, and the Collaborative Fund. The investment is earmarked for the expansion of Carba’s project portfolio within the United States and the acceleration of its international deployment, specifically targeting new operations in Asia. This move represents a significant step for the company as it seeks to operationalize its biomass-to-biocarbon technology on a global scale.

A primary challenge addressed by this initiative is the economic and logistical complexity of scaling carbon dioxide removal (CDR) infrastructure. Traditional methods often require substantial capital expenditure and the development of entirely new logistical chains to handle biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More and store carbon. Furthermore, municipal and industrial waste systems frequently struggle with the efficient management of biomass, which, when left to decompose or incinerate, contributes significantly to atmospheric carbon levels. Finding a pathway to integrate carbon removal into established waste management workflows without disrupting operations remains a critical hurdle for the sector.

Carba’s solution involves the deployment of proprietary autothermal pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More reactors capable of converting waste biomass—sourced from utility corridor management—into solid biocarbon. Rather than seeking novel storage applications that require market development, Carba utilizes existing landfill infrastructure for the permanent burial of this material. This process not only sequesters carbon but is also being studied for co-benefits, such as the biocarbon’s ability to act as a filter for odors and toxins within the landfill environment. The durability of this carbon removal is verified by Isometric, ensuring certification for over 1,000 years of storage.

The outcomes of this funding round build upon Carba’s recent momentum, including a five-year offtake agreement with Microsoft and a $7 million grant from the U.S. Department of Energy. With the new $6 million, Carba aims to unlock pathways for durable CDR credits in markets experiencing high corporate and governmental demand. By leveraging existing landfill sites, the company projects a streamlined path to gigaton-level carbon management. For the broader biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More industry, this development underscores the strategic value of retrofitting existing waste infrastructure. It suggests that aligning pyrolysis technology with current municipal waste operations—rather than operating in isolation—may offer a more capital-efficient route to rapid scaling and verified permanence.