Terragia: Low-Carbon Biofuel Technology Company Raises $6 Million

By Amit Chowdhry • Apr 2, 2024

Terragia Biofuel – a company driving the next generation of biofuels – announced it raised a $6 million seed round led by Engine Ventures and Energy Impact Partners (EIP). The company will use this funding to commercialize its novel biology-based approach to converting cellulosic biomass into ethanol and other products, expand its employee headcount, and initiate partnerships with major biofuel producers.

Terragia utilizes engineered thermophilic bacteria to break down cellulosic biomass and convert it into ethanol and other chemical products. The company’s technology avoids features responsible for the high cost of conventional cellulosic biofuel production by one-step consolidated bioprocessing without added enzymes and utilizing mechanical disruption during fermentation (cotreatment) instead of thermochemical pretreatment.

In partnership with Dartmouth College and the University of Campinas, the development of Terragia’s technology is supported by funding from the U.S. Department of Energy Center for Bioenergy Innovation and the São Paulo Research Foundation, by grants from the U.S. Department of Agriculture and National Science Foundation, as well as private capital.

Terragia also announced leadership changes by immediately appointing Kristin Brief as Chief Executive Officer. And Brief joins co-founders Lee Lynd, who transitioned to Chief Technology Officer, Bill Brady, Board Chair, and Chris Herring, Vice President of Technology Development.


“Cellulosic biofuels are a route to low-carbon fuels for aviation and other difficult-to-electrify transport modes as well as CO2 removal from the atmosphere, both of which are critical for climate stabilization. One-step biological conversion of cellulosic biomass without added enzymes or thermochemical pretreatment has clear cost reduction potential relative to other process concepts.”

– Director of the National Renewable Energy Laboratory Martin Keller

“Conversion of ethanol to fuels for planes, ships, and trucks is a leading option for approximately half of future global transportation energy demand, for which electrification is likely impractical, corresponding to a trillion dollar market. With full penetration of this market, Terragia’s technology is projected to displace 3 gigatons of CO2 emissions annually and enable capture of a yet larger amount of CO2.”

– Terragia CTO and Co-Founder Lee Lynd, a Distinguished Professor at Dartmouth’s Thayer School of Engineering and Director of the Advanced Second Generation Biofuel Lab at the University of Campinas, Brazil,

“Terragia has an exciting opportunity to succeed where others in the cellulosic biofuel industry have not. The company’s technology provides a radically different approach that uses biology to reduce the high costs and scale of conventional cellulosic biofuel production. With an experienced management team, deep industry experience, and a joint development agreement with a major U.S. biofuel producer already underway, Terragia’s go-to-market approach has the potential not only to meet future global transport demand but to create low-carbon biofuel products at a price point competitive with fossil fuels.”

– Katie Rae, CEO and Managing Partner of Engine Ventures

“We are proud to support Terragia on their path to revolutionizing cellulosic ethanol and sustainable aviation fuel (SAF) production. Low-carbon fuels are a cornerstone of the energy transition, and we think Terragia has the right team and technology to become a leader in the field.”

– Ashwin Shashindranath, Partner at Energy Impact Partners

“It’s an honor to lead Terragia as CEO. I’ve spent the majority of my 20-year career advancing early-stage clean energy startups, and Terragia’s technology, team, and path to commercialization are differentiated. We have a unique opportunity to make a transformational impact on climate outcomes, in addition to generating substantially higher revenues for biofuel producers.”

– Kristin Brief