What we do

Exterra Carbon Solutions is a groundbreaking negative emissions technology company that pioneers engineered mineral carbonation as a method of CO2 storage. We use a unique approach to accelerate the natural weathering of rocks, transforming mineral waste piles into vast carbon sinks in a timescale relevant to global climate action.

Exterra is shaping the carbon sequestration industry by establishing carbon accounting methodologies with global standard bodies for generating trusted carbon credits. We provide industrial emitters and direct carbon capture companies with turnkey solutions for durably storing their captured CO2.

Our innovation lies in the intersection of carbon sequestration and waste valorization. We offer scalable and cost-effective solutions for durable carbon storage, as well as the production of valuable minerals needed to support the clean energy transition. Our integrated approach allows real-time monitoring of operating parameters and CO2 mineralization, providing unparalleled transparency and speeding up verification process with standards for credit generation.

Our Team

  • Olivier Dufresne

    Olivier Dufresne

    Chief Executive Officer and Co-Founder

    Olivier is an experienced leader who has spent years in mine development as a mining engineer. A former investment banker, Olivier is recognized for his ability to rapidly learn and think critically, which made him a highly valued capital markets professional, as well as an undisputed team player. A creator of solutions and an agent of change, Olivier is now determined to transform the face of the mining industry by developing solutions for net-zero production of the minerals needed for the energy transition. He intends to achieve this through his passion for developing technologies and projects that have a tangible positive impact on our environment and our communities

    See Bio
  • Dave Fennell photo

    David Fennell

    Chief Strategy Officer and Co-Founder

    David is a Professional Civil Engineer (nonpracticing) with on-site experience in all phases of large-scale mine development. He has a passion for mining and finding new ways to develop the industry’s positive impacts. Currently enrolled in the Colorado School of Mines; Professional Masters in Mining Engineering and Management, and Certificate in Carbon Capture, Utilization, and Storage.

    See Bio
  • tarek

    Tarek Chalhoub

    Chief Operating Officer

    Tarek is a Professional Engineer with nearly 15 years of experience in engineering, project execution and commissioning of complex mining projects. He has played a key role in his contribution of projects in the fields of gold, iron and spodumene in Canada, Mauritania, Suriname, and Ecuador. He has a passion for project delivery and motivated to make an impact on the mining industry.

    See Bio
  • AnikGendron

    Anik Gendron

    Chief Legal & External Affairs Officer

    Anik is a corporate attorney with over 14 years of extensive experience in securities law & capital markets, corporate governance, mining law, transactional M&A, and commercial contract negotiation. Known for her business acumen, Anik has advised many entrepreneurs at all stages of development and has served as general counsel and corporate secretary for several publicly traded companies, predominantly in the mining sector. With her breadth of knowledge and expertise, Anik’s mission is to guide Exterra through the complex mining carbon sequestration regulatory environment.

    See Bio
  • JPgagnon

    Jean-Philippe Gagnon

    Chief Technology Officer

    Jean-Philippe brings a robust 26-year track record in industrial chemistry, underscored by his master's degree in physical chemistry and diverse experience from metallurgy to concrete durability. During his tenure at SIMCO Technologies as Director of Product Development, he was a pivotal force in the engineering services, transforming industrial residues into sustainable building materials. His prior roles in mineral processing and expertise in complex thermal processes, coupled with his academic contributions as a lecturer, solidify his status as an innovative leader dedicated to advancing technology in the service of environmental sustainability.

    See Bio
  • EricProulx

    Éric Proulx

    Director of Metallurgy

    Éric has over 30 years of experience in analytical chemsitry, ore processing optimization, and spearheading innovative technologies. Over the course of his career, he has developed extensive expertise in the design, installation, and operation of on-site pilot projects. Éric has also worked on the development of solutions to optimize precious metal leaching processes, has carried out projects for the development of hydrometallurgical processes, performed on-site audits to diagnose complex problems in cyanidation circuits, and has facilitated treatment projects for liquid mine waste to recycle compounds such as cyanide.

    See Bio
  • ColinMerrill

    Colin Merrill

    Business Associate

    Colin is a skilled financial professional, honed from his time as an investment banker at BMO Capital Markets, where he led complex corporate transactions across diverse sectors. With expertise in both process and people management, Colin aims to combine his analytical and interpersonal skills to enhance efficiency and drive Exterra's business strategies, furthering its role in the circular economy and efforts towards decarbonization.

    See Bio

Privacy Officer

The person in charge of the protection of personal information at Exterra Carbon Solutions Inc is:

Anik Gendron, Chief Legal & External Affairs

Tel: +1 (514) 233-1657
Email: legal@exterracarbon.com

  • Our Mission

    Accelerate decarbonization by delivering safe, scalable, and durable solutions for CO2 storage using mineral waste.

  • Our Vision

    Enable large-scale, global decarbonization through the mineral value chain.

  • Our Values

    Innovation: We continuously seek new methods and technologies to solve complex problems and build future-ready solutions.

    Integrity: We align our words with our actions, operating under the highest ethical standards.

    Quality: We are committed to delivering robust, effective, and long-term solutions that bring meaningful value to our stakeholders.

    Transparency: We foster trust through clear, accurate communications and by holding ourselves accountable to our stakeholders.

    Engagement: We work with a deep sense of responsibility towards the industry we serve, the communities we impact, and the environment we strive to protect.

    Accountability: We hold ourselves accountable for our actions, cultivating a culture of continuous learning and improvement.


Our name

Our name – Exterra – represents our pursuit of ex-situ mineral carbonation projects which store carbon dioxide as a rock above the surface of the earth (terra) instead of under it.

The “X” design in Exterra represents the carbonate molecule created through our CO2 mineralization process. The diagram to the left is a visual representation of the carbonate and divalent metal ions that bind together to form a carbonate mineral.

Our story

See the key milestones in our journey to scale carbon storage using mineral waste.

  • Incorporation of ESG Natural Resources

  • Close of oversubscribed $801,000 pre-seed financing round

  • Initiated Carbon Accounting Methodology Development

  • Initiated Metallurgical Development Program

  • Secured mineral waste for flagship project

  • Bench scale testing of novel mineral carbonation technology

  • Company re-brand's to Exterra Carbon Solutions

  • Technology Scale-up to Pilot

  • Exterra receives C$1.3 million in grant for critical mineral extraction

  • Exterra’s first-of-its-kind CO2 mineralization methodology receives approval and is published by Puro.Earth (Engineered Carbonation of Mineral Waste)

  • Close of C$2.1 million Oversubscribed SEED Financing Round

  • Commissioning of Pilot Plant

Technological Highlights

  • 1

    High capacity and low cost

  • 2

    Measurable and verifiable impact

  • 3

    Flexible CO2 source

  • 4

    Wide-range of suitable mineral waste

"*" indicates required fields

Step 1 of 2

I am...