Biogas and Renewable Natural Gas
Systems Engineered by GraniteFuel
Fully integrated systems for biogas conditioning, upgrading, and renewable fuel production.
GraniteFuel Engineering has commissioned numerous gas conditioning and upgrading systems across North America that continue to produce ever-increasing volumes of renewable natural gas. These installations demonstrate our commitment to innovation, practical engineering, and sustainable energy development through proven field performance and in-house manufacturing expertise.
GraniteFuel designs, develops, and builds complete biogas and renewable natural gas (RNG) systems at our five manufacturing and assembly facilities located across Texas and Ontario. Each system is engineered for durability, process efficiency, and long-term reliability, providing operators with fully integrated solutions that transform raw biogas into clean, high-value renewable fuel. From moisture removal and contaminant control to compression, separation, and polishing, every GraniteFuel system is built to work seamlessly together as part of a unified, modular platform. Whether for agricultural digesters, wastewater treatment plants, or landfill gas projects, GraniteFuel systems deliver consistent performance, simplified operation, and proven results in the field.
All GraniteFuel biogas conditioning and RNG upgrading systems are engineered, fabricated, and tested in-house to maintain the highest standards of quality, integration, and safety.
Biogas conditioning Solutions
GraniteFuel’s Biogas Conditioning Solutions prepare raw biogas for reliable upgrading and utilization. These systems remove moisture, hydrogen sulfide, ammonia, siloxanes, and oxygen to protect downstream equipment and ensure consistent gas quality. Each unit is engineered for continuous-duty performance under variable site conditions, enabling safe, stable operation across agricultural digesters, wastewater treatment plants, and landfill gas recovery facilities. Together, these conditioning systems form the foundation for efficient and high-quality renewable natural gas (RNG) production.
Renewable Natural Gas Upgrading Solutions
GraniteFuel’s RNG Upgrading Solutions convert conditioned biogas into pipeline-quality renewable natural gas through a fully integrated process of compression, membrane separation, and polishing. These systems are designed to operate as a cohesive platform that maximizes methane recovery, minimizes energy use, and ensures compliance with gas-quality standards. Whether producing RNG for pipeline injection, vehicle fueling, or on-site energy generation, GraniteFuel’s upgrading technologies deliver reliable, high-purity results with scalable performance for projects of any size.
Supporting Solutions
GraniteFuel’s Supporting Solutions provide the essential process utilities that maintain stability, control, and performance across the biogas-to-RNG upgrading chain. These systems include the Blower, Blending, and O₂ Generator units, which collectively ensure safe gas conveyance, balanced composition, and consistent oxidation support. Designed for seamless integration with all GraniteFuel conditioning and upgrading systems, the Supporting Solutions optimize plant operation and ensure long-term reliability under real-world biogas conditions.
