CEMS Experts

What CEMS Experts does

CEMS Experts, legally GK Associates, Inc., is a US-based provider of Continuous Emissions Monitoring Systems (CEMS) founded in 1992 and rebranded under its current trade name in 2011. The firm is headquartered in Moorpark, California, and operates with a small staff of 1–10 employees under founder/CEO Geoffrey Klotz, who brings over 25 years of CEMS-specific experience. CEMS Experts designs, integrates, and services monitoring systems used by power generation, heavy industrial manufacturing, waste-to-energy, oil & gas, and municipal/utility operators to meet federal, state, and local emissions compliance obligations.

The company's core technology stack spans extractive CEMS, FTIR-based CEMS, Boiler MACT-aligned CEMS, ambient air monitoring systems, and a proprietary Data Acquisition System (DAS) that integrates with plant PLCs via National Instruments Lookout and HMI software. It also markets iCEMS, a lower-cost CEMS product line aimed at smaller emission sources that historically could not afford continuous monitoring, broadening the addressable buyer base. Engineering, integration, QA/QC, refurbishing, rentals, and on-site field service form the technical backbone of the offering.

CEMS Experts monetizes through a mix of capital equipment sales, rentals, captive leasing under GKA Financial Services, recurring maintenance contracts, phone support, training, and consulting services. Customer relationships are reinforced by a stated footprint across three continents, with documented activity in the United States and Qatar. The business model is fundamentally a regulated-compliance infrastructure play, monetizing both one-time project deployment and ongoing service and finance relationships tied to installed systems.

Name

CEMS Experts

Legal name

GK Associates, Inc.

Website

https://cems-experts.com

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

1–10 employees

Short description

CEMS Experts is a Moorpark, California-based provider of Continuous Emissions Monitoring Systems and related data acquisition, integration, leasing, and maintenance services for power, industrial, waste-to-energy, oil & gas, and municipal operators across three continents.

Ownership category

akta.pro rank

Product category

Industrial Environmental Compliance & Continuous Emissions Monitoring

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345), Other Measuring and Controlling Device Manufacturing (334519), Environmental Consulting Services (54162)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro industry

PRIMARYEUAHADAA

Continuous Emissions Monitoring Systems (CEMS) & Stack Testing

Energy, Utilities & Environment/Environmental Compliance, Monitoring & Consulting/Emissions Measurement, Reporting & Verification (MRV)

SECONDARYEUAHACAB

Stack/Source Emissions Testing & CEMS Support

Energy, Utilities & Environment/Environmental Compliance, Monitoring & Consulting/Environmental Monitoring & Sampling (Air/Water/Soil/Noise)

SECONDARYIMAGAFAE

Process Analytical Instrumentation (Gas analyzers, spectroscopy, pH/ORP, conductivity)

Industrials, Manufacturing & Construction/Electrical Equipment & Industrial Electronics/Sensors, Instrumentation & Measurement (Industrial sensing, metrology, test)

SECONDARYEUAEAAAN

Power Plant I&C / SCADA / DCS EPC

Energy, Utilities & Environment/Energy Infrastructure & Services (EPC, O&M, Field Services)/Power Generation EPC & Construction

Keywords

• Continuous emissions monitoring
• EPA compliance consulting
• Industrial air quality monitoring
• CEMS engineering integration
• Emissions data acquisition systems

Headquarters

HQ city

Moorpark

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. CEMS Sales and Products: Sale of custom and turnkey Continuous Emissions Monitoring Systems including analyzers, DAS, sample conditioning, enclosures, and associated hardware. Systems available as hot/wet, cold/dry extractive, in-situ, dilution, FTIR, and multi-gas configurations. Also includes iCEMS low-cost compliance system and refurbished equipment.
2. Custom CEMS Engineering and Integration: Engineering, design, integration, and installation of custom CEMS systems. Includes system selection support, installation management, and commissioning services for new and existing installations.
3. CEMS Rentals: Rental of CEMS equipment for temporary monitoring needs including emergency replacements, data quality verification, new installation bridge periods, process emissions modeling, SCR ammonia slip verification, and pre-purchase engineering modeling. Rental terms available daily, weekly, monthly, or longer. Includes 24/7 remote monitoring and complete on-site maintenance.
4. CEMS Leasing (GKA Financial Services): Capital and Fair Market Value lease programs enabling customers to acquire CEMS equipment through affordable monthly payments rather than large capital expenditures. Helps customers overcome budget constraints and provides flexibility for technology upgrades.
5. Maintenance Contracts and Support Services: Customized maintenance agreements available in monthly, quarterly, or yearly intervals. Includes preventative maintenance, hardware/software support, cylinder gas audits (CGA), QA/QC reviews, RATA support, 24/7 phone support, and spare parts management. Multi-year agreement discounts available.
6. CEMS Training: On-site training for plant operators, technicians, and management personnel covering operation, routine maintenance, calibration, compliance reporting, QA/QC procedures, and troubleshooting. Curriculum customized to specific system configurations.
7. On-Site Repair and Parts Management: Emergency on-site repair services for unplanned CEMS failures to minimize downtime. Spare parts management ensures critical parts are on site. Services available for all CEMS manufacturers. Refurbishing services restore existing analyzers to functional state at cost savings versus new equipment.
8. EPA Compliance Consulting: Consulting services including CEMS selection and installation support, QA/QC plan development, EPA Part 75 navigation, documentation upgrades, system certification support (RATA, CGA), and regulatory reporting assistance.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

CEMS Experts designs, integrates, sells, rents, leases, and services custom Continuous Emissions Monitoring Systems (CEMS) used by industrial facilities to comply with EPA air emissions regulations under 40 CFR Part 60, Part 75, and Boiler MACT. The company engineers turnkey systems by combining gas analyzers from multiple manufacturers with its proprietary open-source CEM Data Acquisition System, and supports them with consulting, QA/QC plans, maintenance contracts, training, on-site repair, and refurbishing services.

Product overview

CEMS Experts is a provider of Continuous Emissions Monitoring Systems (CEMS) and related services, operating since 1992 as a division of GK Associates. The company's product portfolio centers on four core monitoring systems: Compliance CEMS for EPA regulatory compliance documentation, Process Monitoring CEMS for manufacturing control, Ambient Air Monitoring CEMS for real-time air quality reporting, and Data Acquisition Systems (DAS) using National Instruments Lookout software. The company also offers the proprietary iCEMS as a low-cost compliance solution and Boiler MACT CEMS for EPA Boiler MACT verification. Supporting the hardware products are services including custom CEMS engineering and installation, CEMS rentals and leasing through GKA Financial Services, consulting and QAQC plan development, and comprehensive maintenance services including training, 24/7 phone support, on-site repair, and spare parts management. The company also provides FTIR-based monitoring for complex gas measurement requirements.

Differentiator

Problem solved

Functional benefit

Brands

• GKA Financial Services: Financing programs for CEMS equipment purchases, including Capital and Fair Market Value lease programs.

Products and services

• Compliance CEMS Custom Continuous Emissions Monitoring Systems designed to monitor flue gas for primary pollutants and document compliance with US EPA 40 CFR Part 75, 40 CFR Part 60, or state permitted emission standards. Intended for industrial facilities and power plants that must continuously report regulated emissions.
• Process Monitoring CEMS Continuous monitoring systems used by manufacturers to maintain control of manufacturing operations and demonstrate ongoing compliance with process specifications by executing scheduled monitoring during normal operation.
• Ambient Air Monitoring CEMS Real-time reporting systems for ambient air quality monitoring of pollutants including ozone, sulfur dioxide, nitrogen dioxide, carbon monoxide, particulate matter, and volatile or toxic organic compounds. Designed for facilities requiring fence-line and community air quality data.
• Data Acquisition Systems (DAS) EPA-compliant data acquisition and control software incorporating National Instruments Lookout industrial automation software, PLCs, and computer subsystems for emissions monitoring, data reporting, and integration with Allen Bradley, Honeywell, Siemens, Foxboro, GE, Modicon, and HP control systems.
• iCEMS Low-cost compact Continuous Emissions Monitoring System measuring EPA targeted pollutants (NOX, CO, SO2, Methane, H2S, VOCs) and diluent gases (O2, CO2). Features fully automated operation with built-in self-diagnosis, integrated sample conditioning, sensors and controller in a single NEMA weather-proof enclosure, with internet-ready wireless/cloud data access. Designed for smaller sources such as gensets, small gas turbines, process heaters, marine sources, and small boilers.
• Boiler MACT CEMS NOX/CO/O2 CEMS systems available for immediate installation to help facilities set up continuous emissions monitoring plans for boilers and verify compliance with EPA Boiler MACT requirements, including baseline reading and real-time tuning of boiler operating parameters.
• FTIR CEMS Fourier Transform Infrared technology-based Continuous Emissions Monitoring System for measuring multiple gas species with high accuracy, speed, and reliability (ppb to ppm sensitivity), especially suited to volatile compounds and hazardous air pollutants such as Hydrogen Chloride, Ammonia, Benzene, and Formaldehyde in cement kilns, glass furnaces, waste incinerators, and wood-fired boilers.
• Custom CEMS Engineering and Integration Custom turnkey Continuous Emissions Monitoring Systems utilizing equipment from multiple manufacturers (Sick-Maihak, Thermo Scientific, Teledyne-API, California Analytical, Ametek, Rosemount, Gasmet, MKS Instruments, Universal Analyzers), including design, engineering, installation, and commissioning services for new and existing installations.
• CEMS Consulting Services Consulting services covering CEMS selection and installation support, data acquisition system upgrades, documentation upgrades, system certification support (RATA, CGA), EPA Part 75 compliance assistance, and regulatory reporting guidance for industrial facilities subject to US EPA air emissions rules.
• QA/QC Plans Development and maintenance of Quality Assurance / Quality Control Plans as required under US EPA 40 CFR Part 60 Appendix F for continuous emissions monitoring systems, including procedures for calibration, accuracy testing, and data validation.
• CEMS Rentals Temporary Continuous Emissions Monitoring System rentals for emergency replacements, data quality verification, new installation bridging, process emissions modeling, SCR ammonia slip verification, and pre-purchase engineering modeling. Available on daily, weekly, or monthly terms with 24/7 remote monitoring and complete on-site maintenance included.
• CEMS Leasing Financing programs offered through GKA Financial Services providing Capital or Fair Market Value lease options for CEMS equipment purchases, enabling customers to acquire monitoring systems through affordable monthly payments rather than large capital expenditures.
• CEMS Maintenance Contracts Customized maintenance agreements available at monthly, quarterly, or yearly intervals including preventative maintenance, hardware and software support, cylinder gas audits (CGA), QA/QC reviews, RATA support, spare parts management, and emergency call-outs. Multi-year agreement discounts available.
• CEMS Training On-site training for plant operators, technicians, and management personnel covering CEMS operation, routine maintenance, calibration, compliance reporting, QA/QC procedures, and troubleshooting. Curriculum is customized to each facility's specific system configuration.
• 24/7 CEMS Phone Support Round-the-clock technical phone support providing access to experienced engineers for technical and maintenance-related questions and system diagnosis on all CEMS manufacturers' equipment.
• On-Site Repair and Spare Parts Emergency on-site repair services for unplanned CEMS failures, installation, retrofit and redesign work, plus OEM and aftermarket replacement parts management for all CEMS manufacturers to minimize downtime.
• CEMS Refurbishing Restoration services that bring existing CEMS analyzers back to functional state at cost savings versus new equipment, plus fully certified factory-refurbished CEMS hardware available for purchase or rental.

Quantifiable outcome

• 50% reduction in calibration gas usage with EPA Method 205 approved dilution system
• +4 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature5 records

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Emerging players

• Aclima: Emerging air quality monitoring company using distributed sensor networks for hyperlocal and ambient air measurement. Partial overlap with CEMS Experts' ambient air monitoring CEMS but focused on community-scale rather than industrial stack monitoring.
• Aeroqual: Developer of compact air quality and gas monitoring sensors for industrial and environmental applications. Adjacent to CEMS Experts' iCEMS product positioning in the small-source and lower-cost continuous monitoring segment.

Broad incumbents

• Horiba: Global instrumentation manufacturer with a large stack gas / CEMS product line serving power, cement, steel, and waste-to-energy customers. Comparable at the hardware and turnkey system level, but as a broad incumbent with a much larger product portfolio than CEMS Experts' focused integration business.
• Teledyne Technologies (Teledyne API): Supplier of CEMS gas analyzers and ambient air monitoring instrumentation through Teledyne API and related brands. Like Thermo, it is both a key OEM supplier listed in CEMS Experts' integration portfolio and a direct competitor with bundled service offerings.
• AMETEK: Diversified electronic instruments and electromechanical device manufacturer with significant process and emissions analytical instrumentation offerings. Supplies CEMS analyzers integrated by CEMS Experts while also selling directly to many of the same industrial customers.
• Thermo Fisher Scientific: Major CEMS OEM through its Thermo Scientific environmental instruments business, supplying analyzers and full CEMS systems into power, refining, and process industries. CEMS Experts explicitly integrates Thermo Scientific analyzers, so Thermo is both a supplier and a competitor with direct sales channels.
• SICK AG: German sensor and CEMS manufacturer whose Sick-Maihak brand is a core analyzer integrated into CEMS Experts' systems. Comparable at the stack emissions monitoring product level, with broader scope across industrial automation that CEMS Experts does not address.

Direct peers

• Opsis AB: Swedish supplier of FTIR-based CEMS and ambient air monitoring systems for industrial and regulatory compliance. Comparable because it competes with CEMS Experts' FTIR CEMS offering for hazardous air pollutant monitoring in cement kilns, waste incinerators, and process industries.
• Enviro Technology Services: US-based integrator and distributor of CEMS, FTIR, and ambient air monitoring systems for power plants, cement, and industrial facilities. Directly competes with CEMS Experts as an independent multi-vendor CEMS integrator serving overlapping EPA compliance customers.
• Clean Air Engineering: Provider of emissions testing, CEMS installation, and air quality consulting services to industrial and utility customers. Highly comparable because it sells both CEMS hardware integration and stack testing services into the same EPA Part 75/60 customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/groups?gid=2083250&trk=myg_ugrp_ovr

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 CEMS Experts