Flue Gas Conditioning

Flue Gas Conditioning Market Outlook

The global flue gas conditioning market is projected to reach approximately USD 5.3 billion by 2035, growing at a Compound Annual Growth Rate (CAGR) of around 6.5% from 2025 to 2035. This significant growth is primarily driven by increasing regulations aimed at reducing emissions, the growing demand for energy-efficient technologies, and the rising awareness about environmental sustainability. Furthermore, the continuous investments in industrial infrastructure, particularly in emerging economies, are anticipated to bolster the market for flue gas conditioning systems as industries seek to comply with stringent environmental norms. Additionally, advancements in technology are enhancing the efficiency of these systems, making them an attractive option for various industries. The integration of smart technologies and automation in flue gas conditioning is also expected to contribute positively to the market dynamics.

Growth Factor of the Market

One of the primary growth factors for the flue gas conditioning market is the increasing demand for clean energy solutions that effectively mitigate harmful emissions. Governments worldwide are implementing more stringent environmental regulations that require industries to adopt advanced flue gas treatment methods to reduce pollutants such as sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter. Additionally, as industries prioritize sustainability, the shift toward renewable energy sources, including wind and solar, necessitates the use of flue gas conditioning systems in hybrid energy setups. Moreover, the flourishing construction and industrial sectors in developing regions are driving the demand for efficient flue gas management solutions, significantly contributing to market growth. The rise in coal-fired power plants in some countries and the retrofitting of older facilities with advanced conditioning systems also add to the market demand, ensuring compliance with new environmental standards. Furthermore, technological innovations aimed at enhancing the efficiency and reliability of flue gas conditioning systems are expected to create lucrative opportunities for manufacturers and service providers in this sector.

Key Highlights of the Market

• Projected global market size of approximately USD 5.3 billion by 2035.
• CAGR of around 6.5% from 2025 to 2035.
• Increasing regulations on emissions driving market adoption.
• Growing investment in industrial infrastructure in emerging economies.
• Technological advancements improving efficiency and compliance.

By Type

Dry Flue Gas Conditioning Systems:

Dry flue gas conditioning systems are designed to treat flue gases without the use of water, making them a more environmentally friendly option. These systems primarily utilize dry reagents to neutralize acidic components in flue gas, reducing the formation of harmful emissions. The efficiency of dry conditioning systems is particularly beneficial in applications where water availability is limited. With stringent environmental regulations urging industries to reduce their carbon footprint, the adoption of dry flue gas conditioning systems is on the rise. Additionally, their lower operational costs and reduced waste generation contribute to the overall appeal of this technology, driving its demand across various sectors, including power generation and cement manufacturing.

Semi-Dry Flue Gas Conditioning Systems:

Semi-dry flue gas conditioning systems operate at intermediate moisture levels, using a combination of dry and liquid reagents to effectively manage emissions. These systems have gained popularity due to their ability to provide a balance between efficiency and environmental considerations. They are particularly effective in removing sulfur dioxide and other acid gases, making them suitable for industries such as chemical manufacturing and waste incineration. The semi-dry approach minimizes water usage while still achieving considerable reductions in harmful emissions. As industries seek more adaptable and cost-effective solutions to meet regulatory requirements, the market for semi-dry flue gas conditioning systems is expected to witness significant growth in the coming years.

Wet Flue Gas Conditioning Systems:

Wet flue gas conditioning systems utilize water in the treatment process, making them highly effective in removing a broad spectrum of pollutants, including particulates, sulfur dioxide, and heavy metals. The ability of wet systems to achieve high removal efficiencies makes them a preferred choice in industries with stringent emission standards. These systems are particularly common in coal-fired power plants and industrial boilers, where large volumes of flue gas require effective treatment. However, the operational costs associated with water usage and wastewater management can be a concern. Nonetheless, the increasing focus on environmental sustainability and compliance with emissions regulations is likely to drive the adoption of wet flue gas conditioning systems in various industries.

By Application

Power Generation:

The power generation sector is one of the largest applications for flue gas conditioning systems, as these installations are crucial for mitigating emissions from fossil fuel-based power plants. With the growing concerns about air quality and climate change, power generation facilities, especially coal and gas-fired plants, are increasingly adopting advanced flue gas treatment technologies. These systems play a vital role in removing pollutants like sulfur dioxide, nitrogen oxides, and particulate matter, thereby helping to meet stringent regulatory standards. As the demand for cleaner energy sources escalates, the emphasis on effective flue gas conditioning in power generation is expected to drive significant market growth.

Cement Manufacturing:

The cement manufacturing industry is another prominent application for flue gas conditioning systems due to the considerable emissions generated during the production process. Cement plants are often subjected to strict emissions regulations, necessitating the implementation of effective flue gas conditioning solutions. These systems help to capture and neutralize harmful gases and particulates released during cement production, improving air quality and compliance with environmental standards. As global cement production continues to expand, particularly in developing regions, the demand for flue gas conditioning technologies is anticipated to grow, supporting the industry's efforts toward sustainability and regulatory compliance.

Chemical & Petrochemical:

In the chemical and petrochemical sector, flue gas conditioning systems are essential for managing emissions generated during various industrial processes. These facilities often handle volatile organic compounds and other hazardous pollutants, necessitating robust emission control systems. Flue gas conditioning technologies, such as wet scrubbing and dry conditioning, are employed to effectively remove toxic substances from flue gases before they are released into the atmosphere. The increasing focus on environmental health and safety, combined with stringent regulations, is driving the adoption of advanced conditioning systems in the chemical and petrochemical industries, which is expected to contribute positively to the market growth.

Iron & Steel:

The iron and steel industry is known for its significant contributions to environmental pollution, particularly through the emission of particulate matter and gases like sulfur dioxide and carbon monoxide. Flue gas conditioning systems are crucial in this sector for controlling emissions and improving air quality. These systems help in capturing and treating flue gases released during the processing of iron ore and steel production, ensuring that operations comply with stringent environmental regulations. As global steel production continues to rise, particularly in emerging markets, the demand for effective flue gas conditioning solutions in the iron and steel industry is expected to grow considerably.

Others:

This category encompasses various other industries that utilize flue gas conditioning systems for emissions control. Industries such as waste incineration, food processing, and textiles also generate significant flue gas emissions that require treatment. The growing awareness of environmental issues and the need for sustainable practices are driving the demand for flue gas conditioning technologies across these sectors. As regulatory frameworks become stricter worldwide, the adoption of flue gas conditioning solutions is expected to increase, providing opportunities for market expansion in diverse applications.

By User

Coal-Fired Power Plants:

Coal-fired power plants are among the most significant users of flue gas conditioning systems due to the high emissions generated during coal combustion. These plants face strict emission control regulations, which necessitate the implementation of advanced conditioning technologies to reduce sulfur emissions, particulate matter, and other pollutants. Flue gas conditioning systems specifically designed for coal-fired power plants help optimize combustion efficiency and minimize environmental impact. As global reliance on coal continues in certain regions, the demand for effective flue gas conditioning solutions in these facilities is expected to remain strong.

Gas-Fired Power Plants:

Gas-fired power plants, though generally cleaner than coal-fired plants, still require flue gas conditioning systems to ensure compliance with air quality standards. The burning of natural gas can produce nitrogen oxides and other pollutants, which must be managed effectively to minimize environmental impact. Flue gas conditioning technologies such as selective catalytic reduction (SCR) and low-NOx burners are commonly employed in gas-fired plants to control emissions. As the shift towards cleaner energy sources continues, the adoption of flue gas conditioning in gas-fired power plants is anticipated to grow, contributing to overall market expansion.

Industrial Boilers:

Industrial boilers are significant contributors to flue gas emissions across various sectors, including manufacturing, food processing, and textiles. The need for efficient flue gas conditioning systems in industrial boilers arises from stringent regulations aimed at controlling emissions and enhancing energy efficiency. Technologies such as dry scrubbing and wet scrubbing are commonly utilized to manage emissions in these systems. With the growing emphasis on sustainability and compliance with environmental standards, the demand for advanced flue gas conditioning solutions in industrial boilers is expected to increase in the coming years.

Cement Kilns:

Cement kilns are a critical user of flue gas conditioning technologies, as the cement production process generates significant emissions. The use of advanced conditioning systems is essential for capturing and treating harmful gases and particulates released during cement manufacturing. By implementing effective flue gas conditioning solutions, cement producers can not only comply with regulatory requirements but also improve overall operational efficiency. As the global cement market continues to expand, the demand for flue gas conditioning in cement kilns is predicted to experience substantial growth.

Waste Incineration Plants:

Waste incineration plants play a vital role in waste management and energy recovery; however, they also generate considerable flue gas emissions that require treatment. The implementation of flue gas conditioning technologies is essential for controlling emissions from these facilities, ensuring that pollutants like dioxins, furans, and particulate matter are effectively managed. With increasing concerns regarding waste disposal and environmental sustainability, the adoption of flue gas conditioning solutions in waste incineration plants is expected to grow, aligning with global efforts towards cleaner waste management practices.

By Technology

Flue Gas Desulfurization:

Flue gas desulfurization (FGD) technology is crucial for reducing sulfur dioxide emissions produced during the combustion of fossil fuels, particularly in coal-fired power plants. This technology employs various methods, including wet scrubbing and dry scrubbing, to neutralize sulfur dioxide and convert it into harmless byproducts. The increasing regulations around sulfur emissions are driving the adoption of FGD systems in numerous industries, ensuring compliance and promoting cleaner air quality. The growth of flue gas desulfurization technology is further supported by ongoing advancements aimed at improving efficiency and reducing operational costs.

Particulate Control:

Particulate control technologies are essential for capturing and managing particulate matter released during combustion processes. This technology includes electrostatic precipitators and fabric filters, which are designed to effectively remove particulates from flue gases before they are discharged into the atmosphere. Given the health risks associated with particulate emissions, industries are increasingly investing in particulate control solutions to comply with stringent regulations. As air quality concerns continue to rise, the demand for effective particulate control technologies is anticipated to increase significantly across various sectors.

Mercury Control:

Mercury control technologies are specifically designed to capture and remove mercury emissions generated during the combustion of coal and other fossil fuels. Given the toxic nature of mercury and its potential environmental impacts, regulatory bodies are enforcing stricter limits on mercury emissions, driving the need for effective control technologies. Techniques such as activated carbon injection and advanced filtration systems are employed to achieve high removal efficiencies. The growing emphasis on reducing mercury emissions is expected to bolster the adoption of mercury control technologies across various industries, particularly in power generation and waste management.

Acid Gas Removal:

Acid gas removal technologies are implemented to capture and neutralize hazardous gases, including hydrogen chloride, hydrogen fluoride, and sulfur dioxide. These systems play a critical role in ensuring compliance with environmental regulations, particularly in industries that generate significant acid gas emissions. Technologies such as amine scrubbing and regenerative thermal oxidizers are commonly used for effective acid gas removal. The increasing focus on environmental sustainability and regulatory compliance is expected to drive the growth of acid gas removal technologies across diverse sectors, promoting cleaner industrial practices.

Others:

The 'Others' category includes various advanced technologies and methodologies aimed at improving flue gas conditioning efficiency. These may encompass advancements in biotechnological applications, innovative materials for filtration, and integrated emission control systems that optimize multiple pollutant removals simultaneously. As industries continue to seek comprehensive solutions for flue gas management, the adoption of innovative technologies is expected to grow, driving the evolution of the flue gas conditioning market.

By Region

The regional analysis of the flue gas conditioning market reveals significant variations in adoption rates and growth potential. North America and Europe are currently the largest markets for flue gas conditioning systems, driven by stringent environmental regulations and a strong emphasis on sustainability. North America is expected to witness a CAGR of approximately 7% during the forecast period, supported by ongoing retrofitting of existing power plants and industrial facilities. The European market benefits from robust regulatory frameworks that mandate emissions control, leading to increased investments in advanced flue gas conditioning solutions. In contrast, the Asia Pacific region is emerging as a dynamic market, fueled by rapid industrialization and growing energy demands, with a projected growth rate of around 6% during the same period.

Latin America and the Middle East & Africa regions show promise as well, albeit at a slower pace. In Latin America, the growing awareness of environmental issues is prompting governments to enact regulations that encourage the adoption of flue gas conditioning technologies. Similarly, the Middle East & Africa region is experiencing a gradual shift toward cleaner energy practices, necessitating the implementation of emission control systems in various industries. While these regions may currently account for a smaller share of the global market, the increasing focus on sustainability and regulatory compliance is expected to drive growth in the coming years.

Opportunities

The flue gas conditioning market is poised for substantial growth in the coming years, presenting significant opportunities for various stakeholders. One of the primary opportunities lies in the increasing demand for retrofitting existing power plants and industrial facilities with advanced flue gas conditioning systems. As older plants strive to meet stringent emissions standards, there is a considerable market for upgrading outdated technologies with more efficient solutions. Additionally, the ongoing investments in renewable energy sources, such as biomass and waste-to-energy facilities, create a growing need for effective flue gas management systems to address emissions associated with these alternative energy sources. Companies that can innovate and provide adaptable solutions for diverse applications will find themselves in a competitive position to capture market share.

Moreover, the rising focus on sustainability and corporate social responsibility across industries is prompting organizations to seek comprehensive environmental management solutions. This trend is leading to the integration of flue gas conditioning systems with smart technologies, such as IoT and AI, to optimize performance and reduce operational costs. Companies that leverage these advancements and offer integrated solutions that address both emissions reduction and operational efficiency will benefit significantly from emerging market opportunities. Furthermore, as international collaboration on climate change intensifies, manufacturers and service providers in the flue gas conditioning market can explore partnerships and projects aimed at developing innovative solutions that meet global standards and facilitate a transition to cleaner energy practices.

Threats

Despite the promising growth prospects, the flue gas conditioning market faces several threats that could impede its progress. One significant threat is the potential for economic downturns, which can lead to reduced investments in industrial infrastructure and energy projects. Companies might scale back on spending for retrofitting or upgrading emissions control systems, which could hinder market growth. Moreover, fluctuations in energy prices, particularly fossil fuels, may also impact the financial viability of new projects, causing industries to delay investments in flue gas conditioning technologies. Additionally, the emergence of alternative energy sources, while a long-term opportunity, could pose a threat to traditional fossil fuel-based industries that rely on flue gas conditioning for compliance. The declining demand for coal and other fossil fuels may result in decreased revenue for flue gas conditioning providers, necessitating a shift in focus towards new applications and markets.

Another potential threat stems from technological advancements that may outdate existing flue gas conditioning solutions. As industries seek more efficient and cost-effective methods for emissions control, there is a risk that current technologies may become less relevant. Companies must continuously innovate and adapt their offerings to stay competitive in this rapidly evolving market landscape. Furthermore, regulatory changes can also pose a challenge, as evolving standards may require significant investment in new technologies and processes. Industries that struggle to keep up with compliance may face penalties, forcing them to invest in emergency measures rather than planned upgrades, which could impact their long-term strategies for emissions management.

Competitor Outlook

• GE Power
• Siemens AG
• ABB Ltd.
• Andritz AG
• Babcock & Wilcox Enterprises, Inc.
• Ducon Technologies Inc.
• Alstom SA
• Haldor Topsoe A/S
• FLSmidth A/S
• Ameresco Inc.
• Veolia Environnement S.A.
• Eriez Manufacturing Co.
• SPX Flow, Inc.
• Hitachi Zosen Corporation
• John Zink Hamworthy Combustion, LLC

The competitive landscape of the flue gas conditioning market is characterized by a mix of established players and emerging companies vying for market share. Key players such as GE Power, Siemens AG, and ABB Ltd. dominate the market with their comprehensive portfolios of advanced flue gas conditioning technologies and solutions. These companies have made significant investments in research and development to enhance their offerings, focusing on improving efficiency and compliance with stringent emissions regulations. As the market continues to evolve, these established players are also exploring partnerships and collaborations with local firms in emerging markets to expand their reach and leverage regional expertise.

Emerging companies in the flue gas conditioning market are also making strides by offering innovative solutions that address specific industry needs. For instance, companies like Ducon Technologies Inc. and Andritz AG are focusing on niche technologies that cater to particular applications, such as waste-to-energy facilities and biofuel plants. The ability to provide customized solutions is becoming increasingly important as industries seek to optimize their emissions control strategies. Additionally, companies are prioritizing sustainability and environmental responsibility in their operations, creating a competitive advantage in the market that resonates with environmentally conscious consumers and regulators alike.

Furthermore, as the market shifts towards smart technology integration, companies are adapting their strategies to incorporate digital solutions and automation into their flue gas conditioning systems. This trend is evident among companies like Babcock & Wilcox Enterprises, Inc. and Haldor Topsoe A/S, which are developing intelligent monitoring and control systems to optimize performance and reduce operational costs. The competitive landscape will continue to evolve as companies strive to stay ahead of technological advancements and regulatory requirements, making innovation and adaptability crucial for sustained success in the flue gas conditioning market.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 ritz AG
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 ABB Ltd.
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 GE Power
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 Alstom SA
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Siemens AG
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 FLSmidth A/S
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Ameresco Inc.
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 SPX Flow, Inc.
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Haldor Topsoe A/S
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Ducon Technologies Inc.
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Eriez Manufacturing Co.
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Hitachi Zosen Corporation
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Veolia Environnement S.A.
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Babcock & Wilcox Enterprises, Inc.
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 John Zink Hamworthy Combustion, LLC
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Flue Gas Conditioning Market, By Type
    • 6.1.1 Dry Flue Gas Conditioning Systems
    • 6.1.2 Semi-Dry Flue Gas Conditioning Systems
    • 6.1.3 Wet Flue Gas Conditioning Systems
  • 6.2 Flue Gas Conditioning Market, By User
    • 6.2.1 Coal-Fired Power Plants
    • 6.2.2 Gas-Fired Power Plants
    • 6.2.3 Industrial Boilers
    • 6.2.4 Cement Kilns
    • 6.2.5 Waste Incineration Plants
  • 6.3 Flue Gas Conditioning Market, By Technology
    • 6.3.1 Flue Gas Desulfurization
    • 6.3.2 Particulate Control
    • 6.3.3 Mercury Control
    • 6.3.4 Acid Gas Removal
    • 6.3.5 Others
  • 6.4 Flue Gas Conditioning Market, By Application
    • 6.4.1 Power Generation
    • 6.4.2 Cement Manufacturing
    • 6.4.3 Chemical & Petrochemical
    • 6.4.4 Iron & Steel
    • 6.4.5 Others

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Flue Gas Conditioning Market by Region
  • 10.6 Middle East & Africa - Market Analysis
    • 10.6.1 By Country
      • 10.6.1.1 Middle East
      • 10.6.1.2 Africa

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Flue Gas Conditioning market is categorized based on

By Type

• Dry Flue Gas Conditioning Systems
• Semi-Dry Flue Gas Conditioning Systems
• Wet Flue Gas Conditioning Systems

By Application

• Power Generation
• Cement Manufacturing
• Chemical & Petrochemical
• Iron & Steel
• Others

By User

• Coal-Fired Power Plants
• Gas-Fired Power Plants
• Industrial Boilers
• Cement Kilns
• Waste Incineration Plants

By Technology

• Flue Gas Desulfurization
• Particulate Control
• Mercury Control
• Acid Gas Removal
• Others

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• GE Power
• Siemens AG
• ABB Ltd.
• ritz AG
• Babcock & Wilcox Enterprises, Inc.
• Ducon Technologies Inc.
• Alstom SA
• Haldor Topsoe A/S
• FLSmidth A/S
• Ameresco Inc.
• Veolia Environnement S.A.
• Eriez Manufacturing Co.
• SPX Flow, Inc.
• Hitachi Zosen Corporation
• John Zink Hamworthy Combustion, LLC