What Unison Solutions does

Unison Solutions, Inc. is a US-based, employee-owned (ESOP since November 2020) custom manufacturer of biogas conditioning and upgrading systems, headquartered in a 90,000 sq ft facility in Dubuque, Iowa. Founded in 2000 and pivoting into biogas in the early 2000s, the company designs and builds systems that remove contaminants (hydrogen sulfide, siloxanes, VOCs, moisture, CO2) and upgrade raw biogas into pipeline-quality renewable natural gas (RNG) or fuel for engines, boilers, and turbines. Its core product lines are BioCNG — a patented three-stage membrane upgrading system — and Amine upgrading systems built on licensed Puregas CA Amine technology, supported by an in-house ASME Section VIII vessel shop, B31.3 process piping, UL-listed control panel fabrication, and PLC programming. The company also offers regenerative siloxane removal, multiple H2S removal modalities including in-digester powder dosing, custom pressure vessels, biogas testing/analysis, replacement media, and recurring maintenance contracts.

The company serves four primary verticals — municipal wastewater treatment plants, landfills, agricultural operations (dairy/swine digesters), and food processing facilities — selling custom-engineered systems ranging from 20 scfm to 8,000 scfm directly to end customers via enterprise field sales and quote-based, multi-year contracts. Its go-to-market relies on direct B2B engagement supplemented by active participation in industry events (WEFTEC, Biogas Americas, RNG Works, WWOA, CSWEA, EPA LMOP) and association memberships with the American Biogas Council, Canadian Biogas Association, and Water Environment Federation. Revenue is generated through four streams: hardware sales of upgrading and conditioning systems, replacement purification media, recurring maintenance contracts and remote diagnostics, and professional biogas testing/analysis services. With 400+ systems installed worldwide across 25+ years and named municipal customers spanning California, Colorado, Nebraska, Michigan, Pennsylvania, and Virginia, Unison has built a defensible niche in a specialized, RFP-driven industrial market.

Name

Unison Solutions

Legal name

Unison Solutions, Inc.

Website

https://unisonsolutions.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Biogas Treatment and Renewable Natural Gas Equipment

NAICS

Pump and Compressor Manufacturing (33391), Industrial Gas Manufacturing (32512)

SIC

Oil & Gas Field Machinery & Equipment (3533), Cogeneration Services & Small Power Producers (4991), Pumps & Pumping Equipment (3561)

akta.pro primary industry

RNG Upgrading, Purification & Conditioning (Membranes, PSA, Amine, Cryogenic) (EUAAAEAD)

akta.pro secondary industries

RNG Injection, Interconnection & Pipeline Quality Compliance (EUAAAEAE), Biogas/RNG Plant Operations, Maintenance & Asset Management (EUAAAEAI), Landfill Gas (LFG) Collection & RNG Upgrading (EUAAAEAB), Wastewater Treatment Plant (WWTP) Biogas & RNG (Digester Gas) (EUAAAEAC), Biogas Upgrading to RNG & Injection/Fueling (Gas Cleanup, Compression) (EUAIAEAF)

Keywords

• Biogas upgrading systems
• Renewable natural gas
• Biogas conditioning equipment
• Hydrogen sulfide removal
• Siloxane removal systems

Headquarters

HQ city

Dubuque

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Biogas Conditioning and Upgrading Systems: Custom-designed biogas conditioning and upgrading systems including BioCNG membrane systems, Amine systems, and conditioning systems for engines, boilers, turbines. Systems range from 20 scfm to 8,000 scfm capacity.
2. Biogas Testing Services: Comprehensive biogas analysis including major constituents, BTU, siloxane speciation, sulfur components, VOCs, and specialty testing for bacteria, mercury, ammonia.
3. Purification Media: Replacement media for H2S removal, siloxane removal, and VOC removal including iron-based media, activated carbon, and silica-based products.
4. Maintenance Contracts and Services: Annual service contracts for remote access and on-site service, field training, online diagnostics, replacement components, and technical phone support.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels6 records

Core offering

Unison Solutions designs, manufactures, and services custom biogas conditioning and upgrading systems that transform raw biogas from anaerobic digesters, landfills, and agricultural operations into pipeline-quality renewable natural gas (RNG) or fuel for engines, boilers, and turbines. Its core offering centers on two proprietary upgrading technologies—BioCNG multi-stage membrane separation and Puregas CA Amine scrubbing—complemented by hydrogen sulfide and siloxane/VOC removal systems, biogas testing services, replacement media, and long-term maintenance contracts.

Product overview

Unison Solutions offers a comprehensive portfolio of biogas conditioning and upgrading systems manufactured in Dubuque, Iowa. The product line centers on two primary biogas upgrading technologies—BioCNG membrane upgrading systems and Amine upgrading systems—which transform raw biogas into pipeline-quality RNG or vehicle fuel. These core upgrading products are complemented by a full range of conditioning systems (for engines/boilers/turbines), contaminant removal systems (H2S, siloxane/VOC), and supporting services (biogas testing, maintenance). The company provides both standard system configurations and custom-engineered solutions, with capabilities including in-house ASME vessel fabrication, UL panel manufacturing, and PLC programming. Systems are designed, assembled, and factory-tested at the 90,000 sq. ft. Dubuque facility before shipment.

Differentiator

Problem solved

Functional benefit

Products and services

• BioCNG Biogas Upgrading Systems Three-stage membrane separation upgrading system that produces renewable natural gas (RNG) for injection into natural gas pipelines or for use as vehicle fuel compliant with SAE J1616 standards. Designed for municipal and industrial biogas sources across a 20-8,000 scfm capacity range.
• Amine Biogas Upgrading Systems Biogas upgrading systems using Puregas CA Amine technology to produce pipeline-quality RNG with 99.9% methane recovery, employing a biodegradable organic solvent in a closed-loop, low-pressure system with heat recovery and reduced energy requirements.
• BioCNG Agricultural Biogas Upgrading Systems Standard three-stage membrane-based upgrading systems specifically engineered for agricultural waste digesters, producing RNG with options for multi-site compression and private pipeline configurations. Targeted at dairy, swine, and mixed agricultural operations.
• Biogas Conditioning Systems for Engine/Boiler/LGEN Low-pressure blower-based biogas conditioning systems that compress and remove moisture from biogas to feed internal combustion engines, boilers, and linear generators, tuned to manufacturer specifications for H2S and siloxane/VOC tolerances.
• Biogas Conditioning Systems for Turbines High-pressure compressor-based biogas conditioning systems for gas flows up to 300 psig that condition biogas for turbines and fuel cells, with two-stage condensate removal and UL-listed control panels.
• Siloxane/VOC Removal Systems Static bed media systems using activated carbon-based sorbents to remove siloxanes and VOCs from biogas, protecting downstream engines, turbines, and boilers from silicon dioxide deposits during combustion.
• Regenerative Siloxane Removal System Temperature Swing Adsorption (TSA) regenerative siloxane removal system with dual vessels that alternately clean biogas and regenerate media using heated ambient air, designed for high-siloxane applications at landfills and wastewater plants.
• Hydrogen Sulfide (H2S) Removal Systems Suite of H2S removal technologies including static bed media systems with iron-oxide-based and activated carbon media, providing multiple configuration options to fit most biogas conditioning applications.
• Siloxane/VOC & Hydrogen Sulfide Removal Media Replacement filtration media for H2S (iron-based) and siloxane/VOC (carbon-based, silica-based) removal systems, supplied with in-house media evaluation and life-cycle modeling for any biogas system.
• Pressure Vessels & Custom Fabrication ASME Section VIII-certified stainless steel vessel fabrication including H2S/VOC/siloxane removal vessels up to 14' diameter, moisture and oil separators, and particulate removal vessels, plus B31.3 process piping and chemical passivation.
• Biogas Testing Services Comprehensive biogas laboratory analysis covering major constituents, BTU, siloxane speciation, sulfur components, VOCs, and specialty testing for bacteria, mercury, and ammonia, plus RNG tariff review and compliance recommendations.
• Maintenance Contracts & Services Recurring service offering including annual contracts for remote access and on-site service, factory-trained field operating and maintenance training, online system diagnostic support, an inventory of replacement components, and ongoing technical phone support.

Quantifiable outcome

• 400+ biogas systems installed worldwide
• +3 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered core and minor.

• PuregascoreTechnology or IntegrationLicensed technology partnership using Puregas CA Amine technology for biogas upgrading systems. Provides high-quality RNG production with 99.9% methane recovery and reduced energy requirements.
• American Biogas CouncilminorOthersIndustry association membership supporting the biogas and RNG industry
• Canadian Biogas AssociationminorOthersIndustry association membership featured as April 2026 Featured Member
• Clean Energy Fuels CorpcoreStrategic or Co-development PartnerClean Energy designed, constructed, and operates the RNG fueling station in Carson, CA. Unison is the manufacturing partner providing biogas upgrading systems. The station dispenses RNG from Unison's LA County Carson project.
• EPA Landfill Methane Outreach Program (LMOP)minorOthersEPA program partnership supporting landfill methane utilization
• Water Environment Federation (WEF)minorOthersIndustry association membership supporting water quality professionals

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Chart Industries: Chart Industries manufactures cryogenic and process gas equipment including biogas upgrading, liquefaction, and CO2 removal systems. It is comparable in equipment manufacturing and gas processing technology but operates at significantly larger scale and broader industrial gas exposure.
• Brightmark Energy: Brightmark develops, owns, and operates RNG and plastics-to-fuel projects, including dairy and landfill gas-to-RNG facilities. While primarily a project developer, it competes with Unison at the equipment procurement layer and increasingly in the dairy/agricultural RNG segment.
• Air Liquide Engineering & Construction: Air Liquide's E&C division delivers large-scale biogas upgrading and gas processing plants globally using PSA, membrane, and amine technologies. It competes for the larger end of Unison's RNG project pipeline and benefits from deep R&D and a global footprint.
• Anaergia: Anaergia is a larger, publicly listed player offering end-to-end anaerobic digestion, biogas upgrading, and RNG facility operations. It competes with Unison on municipal and agricultural AD projects and has greater scale and balance sheet capacity for turnkey EPC delivery.

Direct peers

• Guild Associates: Guild Associates provides biogas cleanup and sulfur removal systems (e.g., Lo-Cat, PSA-based H2S removal) for landfill and digester gas. It directly competes with Unison's H2S and siloxane/VOC removal product lines for similar municipal and industrial customers.
• Greenlane Renewables: Greenlane designs and supplies biogas upgrading systems using both water scrubber and membrane technology for landfill and digester gas-to-RNG projects. It competes with Unison on the same customer set (municipal WWTPs, landfills, agricultural operators) and overlapping geography (North America and Europe).
• DMT International: DMT supplies biogas upgrading, desulfurization, and gas treatment skids for wastewater, landfill, and agricultural applications. It directly overlaps with Unison's conditioning and H2S/siloxane removal product lines and serves a similar municipal customer base.

Regional players

• CarboTech: CarboTech produces activated carbon and adsorption systems for biogas treatment, including H2S, siloxane, and VOC removal. It competes with Unison's purification media and siloxane/VOC removal product lines, primarily serving European customers.
• Xergi (Nature Energy): Xergi, now part of Nature Energy, designs and builds large-scale biogas plants and upgrading systems primarily for the European market. It is comparable in upgrading technology offering but competes in a different geography than Unison's North America-heavy base.

Emerging players

• MTR (Membrane Technology and Research): MTR develops membrane separation technology used in biogas upgrading and CO2 capture applications. It is a technology peer to Unison's BioCNG membrane offering and could be either a competitor or a potential supplier/partner depending on commercialization path.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC-hrE3hZ1z6irDVPv-imwSw/videos
• Facebookfacebook.com/Unison-Solutions-Inc-820378364644933
• LinkedInlinkedin.com/company/unison-solutions
• Xx.com/unisonsolution1

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Unison Solutions