Methanesys

Clean Methane Systems (CMS), operating as Methanesys, was founded in 2014 and is headquartered in Tualatin, Oregon. The company provides integrated biogas conditioning and upgrading solutions for municipal, industrial, and agricultural applications, with over 150 installations globally across the United States, Australia, South Africa, and the Americas. CMS's core technology is the IonPack, a gas conditioning and pretreatment system built on SULKAN — a proprietary catalytic liquid platform developed by Clairion of Israel that uses ionic liquids combined with wet scrubbing to remove hydrogen sulfide, siloxanes, VOCs, and moisture from biogas streams in a single treatment stage. This single-stage approach differentiates CMS from competitors that require multi-stage scrubbing trains. The IonPack serves as the essential pretreatment step upstream of renewable natural gas (RNG) production, on-site combined heat and power generation, and thermal energy recovery systems. CMS delivers turnkey project execution spanning early feasibility evaluation, detailed engineering design, equipment integration, commissioning, and long-term operational optimization. The company also offers performance-based contracting models where system output guarantees are tied to project success metrics. CMS maintains vendor independence, partnering with multiple technology providers while providing objective recommendations based on project requirements rather than single-brand solutions. The company's business lineage encompasses approximately 200 biogas-related projects meeting stringent regulatory and performance standards.