RFA Welcomes Geostock Sandia, LLC and G37 Ventures, Adding Carbon Sequestration and Execution Expertise
The Renewable Fuels Association today announced the addition of Geostock Sandia, LLC and G37 Ventures as new associate members. Their respective expertise in carbon dioxide geologic sequestration and operational execution support will add specialized capabilities to RFA’s membership, supporting ethanol producers as they manage complex projects and align strategy with day-to-day operations.
“We’re pleased to welcome Geostock Sandia and G37 Ventures to the Association,” said RFA President and CEO Geoff Cooper. “Geostock Sandia brings decades of experience supporting CO₂ sequestration projects, including work with ethanol producers, and offers the technical rigor needed to move permitting and underground storage projects forward safely and efficiently. Meanwhile, G37 Ventures helps biorefinery owners and leadership teams align strategy and execution so priorities, operations, and capital initiatives stay connected. Together, these companies add practical capabilities that help producers navigate complexity and move critical initiatives forward.”
Geostock Sandia, LLC has more than 30 years of experience providing consulting and engineering services for carbon dioxide geologic sequestration research at pilot and commercial sites, including projects supporting ethanol producers. The company is actively preparing Class VI permits, conducting CO₂ underground sequestration pre-feasibility studies, and drilling stratigraphic, pilot, and injection wells. Geostock Sandia applies an integrated project management approach that prioritizes safety, regulatory assessment, and compliance while delivering cost-effective technical solutions designed to reduce risk and uncertainty. Learn more at geostocksandia.com.
“We support ethanol producers in implementing CO₂ sequestration solutions—a proven, cost-competitive, and durable approach to reducing carbon intensity and unlocking access to premium markets,” said Sylvain Riba, President and CEO of Geostock Sandia.
G37 Ventures is a professional services and software solutions firm serving biofuels and agri-energy producers. The firm works with plant owners, boards, and leadership teams to translate intent into clear priorities, aligned leadership teams, and consistent execution. By closing the gap between strategy, capital initiatives, continuous improvement efforts, and daily operations, G37 helps plants move faster, improve performance, and deliver predictable results in a rapidly changing market. Learn more at g37ventures.com.
“Biofuels producers are operating in one of the most complex environments our industry has ever faced—policy shifts, capital demands, CI pathways, and evolving market dynamics,” said Jeff Oestmann, President of Agri-Business for G37 Ventures. “The RFA plays a critical role in bringing clarity and advocacy to that complexity. At G37 Ventures, we work alongside plant owners, boards, and leadership teams to ensure intent is defined, strategy is clear, leadership is aligned, and execution is disciplined. Joining the RFA is a natural extension of our commitment to helping producers build durable, high-performing organizations.”
RFA associate members enjoy benefits such as direct access to legislative and market updates, industry events, and engagement opportunities across the renewable fuels network. Members are listed in both the Associate and Producer Member directories and are encouraged to participate in committees that help shape key policy, market, and technical initiatives.
To learn more about RFA membership and view a current list of members, visit ethanolrfa.org/membership.
