Flue Gas Treatment Systems Market Size
The flue gas treatment systems market was valued at USD 81.45 Billion in 2025 and is projected to reach USD 123.10 Billion by 2033, at a CAGR of 5.3% during the forecast period from 2026 to 2033.
Flue Gas Treatment Systems Market Scope
| Metrics | Details |
| Market CAGR | 5.3% |
| Segments Covered | By Pollutant Control System, By Business Type, By End-User, and By Region |
| Report Insights Covered | Competitive Landscape Analysis, Company Profile Analysis, Market Size, Share, Growth, Demand, Recent Developments, Mergers and acquisitions, New Product Launches, Growth Strategies, Revenue Analysis, and Other key insights. |
| Fastest Growing Region | Asia Pacific |
| Largest Market Share | North America |
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Flue gas treatment is a technique that reduces the number of pollutants produced from the combustion of fossil fuels in a power plant, industrial facility or another source. Flue gas is the material generated when fossil fuels such as natural gas, coal, oil or wood are burned for heat or power. It can contain pollutants such as particulates, mercury, sulfur dioxide and carbon dioxide. The majority of flue gas, on the other hand, is composed of nitrogen oxides. Untreated flue gas from industrial facilities, power plants and other sources can significantly impact local and regional air quality.
Flue gas treatment systems clean the gas produced by energy from waste before being discharged into the environment. Many national-level clean-air standards mandate power plants and other facilities to use flue gas treatments to limit the number of pollutants discharged.
Flue Gas Treatment Systems Market Dynamics
Rising demand from the power generation sector to reduce pollution drives the global flue gas treatment system market. However, high investment costs and complexity in installing the system are likely to restrain the market.
Rising demand from the power generation sector to reduce pollution
The major sources of mercury, SO2 and acid gases are power plants. Coal accounts for approximately 98% of SO2 emissions, 94% of mercury emissions and 86% of NOx emissions in the power sector. Private energy companies prefer coal versus clean natural gas due to its quantity and simplicity of transportation. Coal-burning on a wide scale pollutes the environment with pollutants and contributes to global warming.
Growing environmental concerns and government initiatives to address them propel the flue gas treatment system market forward. In addition, stringent global and government restrictions, such as the Mercury and Air Toxics Standards and Clean Air Act (CAA), require power production firms that use fossil fuels to implement equipment that monitors and reduces emissions to a safer level.
Despite the global reduction in the number of coal-fired power plants, developing countries such as India continue to support new coal-fired power production projects, owing to rising electricity demand and relatively lower coal prices than other options. As a result, the expansion of the power generation industry has driven demand for the flue gas treatment system market over the forecast period.
High investment costs and the complexity of establishing the system
Flue gas treatment systems, which employ electrostatic precipitators and scrubbers, can remove 90% or more of specific contaminants. However, they can be exceedingly expensive to construct and operate. In addition, flue gas treatment standards usually result in complex legal fights. Treatments differ greatly amongst plants and some countries have significantly tighter standards than others. Environmentalists are concerned about emissions from utilities and enterprises in nations with less strict pollution legislation.
Flue Gas Treatment Systems Market Segment Analysis
Based on pollutant control systems, the global flue gas treatment systems market is segmented into particulate control, flue gas desulfurization (FGD), DeNOx, mercury control and others.
Flue gas desulfurization (FGD) removes sulfur dioxide (SO2) from flue gases produced by industrial combustion at petrol refineries, chemical manufacturing sectors, mineral ore processing plants and power plants. Sulfur dioxide is an acidic gas that easily combines with other substances to generate hazardous chemicals such as sulfuric acid, sulfate particles and sulfurous acid.
Flue gas desulfurization systems, often known as scrubbers, are one of the most efficient methods of lowering sulfur dioxide emissions created by industrial combustion and are a classic example of an acid-base chemical reaction executed on a large scale. The systems have sulfur removal efficiency ranging from 50% to 98%.
Wet scrubbers typically obtain the highest removal rates, whereas dry scrubbers achieve the lowest. Coal and oil-fired combustion units, such as petroleum refineries, utility and industrial boilers, cement and lime kilns, municipal and medical waste incinerators, metal smelters and sulphuric acid facilities, employ the technology.
Flue Gas Treatment Systems Companies and Competitive Landscape
The global flue gas treatment systems market is competitive and moderately consolidated with multinational businesses. Major players in the market include General Electric Andritz AG, Babcock & Wilcox Enterprises, Inc., Doosan Lentjes, Mitsubishi Hitachi Power Systems, Ltd., Wood Group PLC, FLSmidth, Thermax Limited, KSB SE & Co. KGaA and Howden Group, among others. The major players in the market are known to incorporate numerous market strategies to achieve growth in the global flue gas treatment systems market; these include mergers, acquisitions, product launches, contributions and collaborations.
Andritz AG
Overview: Andritz AG is a global technology company that provides plants, equipment, systems and services to various sectors. The company headquarters is in Graz, Austria. Andritz has four primary business divisions: hydro, pulp and paper, metals and separation. In addition, the corporation has a global presence with over 280 manufacturing and service locations.
Product Portfolio: Andritz offers FGDplus, a unique scrubber system that maximizes SO2 and dust removal while minimizing energy inputs.
Recent Development:
- December 2025: Mitsubishi Heavy Industries, Ltd. strengthened deployment of its Advanced KM CDR Process™ carbon capture systems, integrating them with flue gas treatment units across Asia and Europe for large-scale thermal power plants.
- November 2025: Andritz AG announced expansion of its wet and dry flue gas cleaning solutions in Europe, focusing on waste-to-energy plants, with improved dioxin, mercury, and acid gas removal performance.
- November 2025: General Electric Company (GE Vernova) expanded its carbon capture and flue gas treatment integration solutions for U.S. power plants, focusing on post-combustion CO₂ capture combined with SOx/NOx removal systems to comply with tightening EPA emission norms.
- October 2025: Babcock & Wilcox Enterprises, Inc. secured contracts to upgrade flue gas desulfurization (FGD) systems at multiple coal-to-gas transitioning plants in North America, emphasizing lower water consumption and higher sulfur removal efficiency (>98%).
