Unison
Founded in 2000, Unison Solutions is an employee-owned company specializing in biogas conditioning and upgrading systems across North America. Headquartered in Dubuque, Iowa, the company operates out of a 90,000-square-foot facility where it designs, manufactures, and tests its equipment in-house.
With a team of engineers, programmers, CAD specialists, and manufacturing staff, Unison emphasizes building key components such as pressure vessels internally to maintain quality control and manage lead times. Today, the company supports biogas projects across municipal, landfill, industrial and agricultural sectors. It has more than 400 systems in the field.
Unison provides a comprehensive suite of gas conditioning and upgrading solutions tailored to the needs of the biogas sector. Its core offerings include hydrogen sulfide removal, compression, moisture removal, siloxane removal, and carbon dioxide separation systems. While the company offers standardized equipment, most projects are customized to meet specific client requirements. Unison also delivers complete gas upgrading systems and provides ongoing service support for both its own installations and third-party equipment.
A key differentiator for Unison is its “made in North America” approach combined with its employee-owned structure, which fosters accountability and a strong commitment to quality. The company holds industry certifications, including ASME fabrication standards, and undergoes regular third-party audits to ensure compliance. All systems are preassembled and tested at its Iowa facility prior to delivery. That allows clients to witness performance verification firsthand, which reduces commissioning risks and enhances project confidence.
Unison has contributed to many notable projects across the United States. Recent installations include systems for the City of Harrisburg, Pennsylvania, and the City of Lincoln, Nebraska, both of which highlight successful biogas upgrading and utilization. At South Platte Renew in Englewood, Colorado, Unison supported a project that has recently been celebrated for becoming a profit centre sooner than anticipated. The company has also worked on innovative collaborations such in Roanoke, Virginia, where a wastewater utility and municipal gas utility partnered on renewable gas integration.
In Canada, Unison continues to expand its footprint, particularly in the wastewater sector, supported by longstanding relationships with consulting engineers and project developers.
Looking ahead, Unison sees steady momentum in the biogas sector despite some recent slowing in agricultural projects in the U.S. Municipal and landfill applications remain strong, with increasing interest in larger-scale developments and pipeline injection projects. The company is also closely watching trends toward domestic energy production and renewable gas utilization, particularly as policy and market conditions evolve across North America.
Unison’s decision to join the Canadian Biogas Association reflects its long-term commitment to the Canadian market. Having worked in Canada for more than two decades, the company values staying connected to industry developments and supporting the growth of biogas nationwide.
