Australia Gas Cleaning Technologies Market Size, Share, Growth and Forecast, 2025-2035

Refineries and smelters keep gas cleaning spend steady

The Australia gas cleaning technologies market was valued at USD 236.5 million in 2025 and is projected to increase from USD 249.7 million in 2026 to USD 407.9 million by 2035, registering a CAGR of 5.60% during 2026–2035. Demand comes from alumina refineries, smelters, mineral processing plants, coal-fired power stations and new energy-from-waste plants, each of which must meet its own licensed emission limits for dust, acid gases and nitrogen oxides. Western Australia held the largest regional share, 36.0% in 2025, because the state hosts the Worsley, Wagerup and Pinjarra alumina refineries and more Safeguard processing facilities than any other. The same region is also the fastest-growing at 5.93% a year during 2026–2035, as new processing plants and waste-to-energy capacity add projects. Government support packages for the Mount Isa, Port Pirie and Whyalla operations during 2025 have shifted spending toward upgrades of existing plants rather than full replacements.

Which equipment and services does this estimate include?

The estimate counts spending by industrial operators in Australia on equipment that removes dust, fumes, acid gases, nitrogen oxides and organic compounds from process off-gas and stack gas. This covers electrostatic precipitators, bag filters, cyclones, wet and dry scrubbers, thermal oxidizers and catalytic or non-catalytic nitrogen oxide control, together with replacement filter bags, spare parts, rebuilds and field service. Value is counted where the equipment is installed, across four zones that group the states and territories.

Western Australia is one zone, Eastern Australia covers New South Wales, Victoria and the Australian Capital Territory, Northern Australia covers Queensland and the Northern Territory, and Southern Australia covers South Australia and Tasmania. The estimate leaves out vehicle exhaust catalysts, building ventilation filters, personal respirators and carbon capture plants, because these serve different buyers and budgets from process gas cleaning.

Particulate control holds the largest share of spend

Why does particulate control lead equipment spending?

Based on solution type, the market is categorized into Particulate Control, Gas Scrubbing, Nitrogen Oxides and Organic Gas Control, and Components and Integrated Support. Particulate Control led with 38.0% of 2025 value, because precipitators and bag filters sit on nearly every calciner, kiln and boiler. Nitrogen Oxides and Organic Gas Control grows fastest at 6.42% a year, as energy-from-waste plants and chemical sites install selective non-catalytic reduction and thermal oxidizers.

Which industries buy the most gas cleaning equipment?

Based on end-use industry, the market is categorized into Mining and Mineral Processing, Alumina and Aluminium, Power Generation and Process Manufacturing and Energy. Mining and Mineral Processing led with 34.0% of 2025 value, because crushing, roasting and refining plants run dust and acid gas control across many sites. Process Manufacturing and Energy grows fastest at 6.25% a year, as waste-to-energy and chemical plants add complete flue gas treatment trains.

Why does installed-base work outweigh new projects?

Based on application, the market is categorized into Greenfield Emissions Control, Brownfield Process Upgrades and Installed-Base Reliability. Installed-Base Reliability led with 40.0% of 2025 value, because filter bags, electrodes and fans on older plants need regular replacement to stay within license limits. Greenfield Emissions Control grows fastest at 6.13% a year, as new refineries, rare earth plants and waste-to-energy facilities specify emission control from the design stage.

How do operators place gas cleaning contracts?

Based on sales channel, the market is categorized into Direct Supplier Contracts, Engineering Procurement and Construction Contracts, Specialist Integrator Contracts and Authorised Distribution Contracts. Direct Supplier Contracts led with 38.0% of 2025 value, because large operators buy precipitator rebuilds and filter systems straight from equipment makers. Specialist Integrator Contracts grow fastest at 5.97% a year, as smaller plants hand complete design, fabrication and installation to one local firm.

Process limits and aging plant drive equipment orders

Process-specific limits push upgrades at older plants

Environmental regulators set emission limits plant by plant, so each refinery, smelter and kiln needs gas cleaning matched to its own process. The NSW Protection of the Environment Operations (Clean Air) Regulation 2022 came into force on Dec. 16, 2022, and it keeps aging plant on a transition to tighter air emission standards, according to the NSW Environment Protection Authority. The national ambient air measure also set goals of 7 and 20 micrograms per cubic meter for annual and daily fine particles by 2025, according to the National Environment Protection Council. Because these goals limit what plants near towns can release, operators fit better filters and scrubbers rather than accept tighter license conditions. As a result, particulate control remains the largest solution type in the Australia gas cleaning technologies market.

Aging precipitators and filters need replacement and service

Much of the installed gas cleaning base was built with refineries, smelters and coal plants that have run for decades, so replacement and service work is the largest source of spending. Glencore's Mount Isa copper smelter is about 60 years old, and federal and Queensland governments agreed in October 2025 to provide up to A$600 million over three years to keep it running, according to Mining Weekly. In 2017, a worn precipitator at a large Australian copper smelter was replaced with a 350-ton unit that removes about 96% of particulates, according to GE. Origin Energy also said in January 2026 that its 2,880 MW Eraring coal plant will run until April 2029. These decisions explain why installed-base reliability held the largest application share, 40.0% of 2025 value.

Download Free Sample

Alumina, critical minerals and new plants add projects

New processing capacity creates greenfield demand, although investment is selective and concentrated in a few resource chains. Australia produced an estimated 17.0 million tons of alumina in 2025, out of a world total of 150 million tons, according to the U.S. Geological Survey. The same source notes that an expanded bauxite mine near Boddington began operating in June 2025 to supply a 4.7-million-ton-a-year refinery near Collie. Rare earth refineries also need off-gas treatment, and Total Air Pollution Control won a June 2022 contract for caustic gas scrubbers on the acid-bake rotary kiln at the Yangibana project in Western Australia, according to The Environmental Group. Greenfield emissions control therefore has the fastest application CAGR, at 6.13% a year.

Energy-from-waste plants add acid gas and NOx control

Energy-from-waste plants in Perth create a new class of buyer that needs acid gas, dioxin and nitrogen oxide treatment from the first day of operation. The East Rockingham facility is designed to burn 300,000 tons of municipal and industrial waste a year, and it cleans flue gas with hydrated lime, activated carbon and selective non-catalytic reduction, according to Kanadevia Inova. The Clean Energy Finance Corporation said in October 2018 that the Kwinana project would take about 400,000 tons of residual waste a year and generate 36 MW. Because each plant needs a full treatment train, nitrogen oxides and organic gas control grows fastest among solution types at 6.42% a year, while process manufacturing and energy users grow at 6.25%.

Rescue packages and carbon baselines reshape projects

Rescue funding shifts spend to smelter upgrades

Public support for struggling metal plants is shifting spending from new builds toward upgrades that keep old furnaces compliant and running. On Feb. 20, 2025, the Australian and South Australian governments announced an A$2.4 billion package for the Whyalla steelworks, including A$32.6 million for infrastructure upgrades, according to the South Australian Department for Energy and Mining. On Aug. 5, 2025, an A$135 million package for Nyrstar's Port Pirie and Hobart smelters added funds for a major maintenance project and an antimony pilot plant, according to the federal industry minister. Federal and Queensland support for the Mount Isa copper smelter followed in October 2025. Each of these programs extends the life of existing stacks, which favors brownfield process upgrades and precipitator rebuilds over new plant.

Carbon baselines now sit beside air quality limits

Carbon rules now sit beside air quality limits, so large emitters plan gas cleaning changes together with energy and process changes. The reformed Safeguard Mechanism commenced on July 1, 2023, and facility baselines decline at a default rate of 4.9% a year, according to the Clean Energy Regulator. The same regulator reports that 208 facilities were covered in 2024–25, with covered emissions of 132.8 Mt CO2-e, down 2.3% from the previous year, in its Safeguard data insights. The Australian Energy Council reported in April 2024 that coal plant nitrogen oxide, sulfur dioxide and PM10 emissions all fell year on year in the latest pollutant inventory. These shifts change gas volumes and composition, so scrubbers and filters are resized during decarbonization projects.

Download Free Sample

Silica rules widen workplace dust capture demand

Tighter silica rules open a market for dust collection at quarries, tunnels and fabrication shops that sit outside licensed stack controls. Engineered stone was banned in Western Australia from July 1, 2024, and stronger regulation of all crystalline silica substances started on Sept. 1, 2024, according to WorkSafe WA. The regulator names on-tool extraction and local exhaust ventilation among the recognized dust controls. Grydale supplies mobile dust extractors for tunneling, mining and quarrying, and its units often work beside underground mining equipment in development headings. Camfil Australia released its Gold Series III dust collector on Nov. 11, 2025, for mining, chemical and metalworking dust.

Pilbara ore sheds and ports need enclosed dust control

Iron ore handling in the Pilbara offers an opening for enclosed storage and bag filter systems that meet local dust conditions. Luehr Filter supplied large horizontal reverse air bag dust collection systems for the Onslow Iron ore storage shed to meet EPA dust emission requirements, according to Australian Mining Review in December 2025. In Port Hedland, a dust taskforce brings together WA Health, the town, the port authority and iron ore exporters, according to the WA Department of Health. Western Australia also hosts the Worsley, Wagerup and Pinjarra refineries, which reported some of the largest covered emissions in 2024–25, with Worsley at 3.22 Mt CO2-e and Wagerup at 1.31 Mt, according to the Clean Energy Regulator's baselines and emissions table. These sites keep dust and gas control demand steady statewide.

Closures, coal exits and remote sites limit growth

Plant closures remove installed-base demand

When an old refinery or smelter closes, its precipitators, filters and scrubbers stop generating parts and service orders. Alcoa announced on Jan. 8, 2024, that it would fully curtail its 2.2-million-ton Kwinana alumina refinery, with production ending in the third quarter of 2024. Nyrstar's Port Pirie and Hobart smelters were also placed under strategic review in 2025 before public support arrived. Suppliers that depend on a few large sites therefore face sudden drops in work.

Coal plant retirements shrink power generation demand

Coal-fired stations carry some of the largest precipitator and fabric filter installations, yet most face retirement within the forecast period. Owners hesitate to fund major rebuilds when closure dates are close, even when those dates move, as Eraring's did in January 2026. As a result, power generation is the slowest-growing end use, and suppliers must replace this work with orders from mining, refining and waste-to-energy plants over time.

Remote sites raise installation and service costs

Many processing plants sit in the Pilbara, the Goldfields, Gladstone or Mount Isa, far from fabrication shops and skilled crews. Shipping large ductwork and filter housings, flying in crews and working around shutdown windows raise the installed cost of each project. Smaller operators may then delay upgrades or choose cheaper partial fixes. Suppliers respond with modular designs, local partners and planned outage service contracts that spread these costs over several years.

Custom process designs lengthen sales cycles

Every kiln, calciner and furnace produces a different off-gas, so suppliers must test, model and guarantee each design before an order is placed. Rare earth plants, such as the acid-bake kiln at Yangibana, release acidic gases that need several conditioning and treatment stages. These steps lengthen tender periods and raise engineering costs for suppliers. Firms with test data and local reference sites win more often, while newcomers struggle to prove performance.

Western Australia leads on refining and mining plants

Western Australia leads on alumina and mineral processing

Western Australia held the largest regional share of the Australia gas cleaning technologies market in 2025 and grows fastest at 5.93% a year. Clean Energy Regulator data for 2024–25 list the Worsley refinery at 3.22 Mt CO2-e and the Wagerup and Pinjarra refineries at 1.31 Mt and 1.27 Mt, which signals large calciner and boiler gas flows. New waste-to-energy plants near Perth add acid gas and nitrogen oxide control. Local firms such as Plastic Fabricators WA in Landsdale build gas scrubbing systems and odor control units for mining and processing clients.

Eastern Australia holds coal power and smelter demand

Eastern Australia held a 31.0% share of 2025 value and grows at 5.03% a year, the slowest regional rate. The zone covers New South Wales, Victoria and the Australian Capital Territory, where the Tomago and Portland smelters reported covered emissions of 1.09 Mt and 0.60 Mt in 2024–25. The NSW Clean Air Regulation keeps aging plant on a path to tighter standards. Growth still trails the national rate because coal stations such as Eraring are set to close within the forecast period.

Download Free Sample

Northern Australia grows on Gladstone and Mount Isa

Northern Australia held a 23.0% share of 2025 value and grows at 5.73% a year, close to the national rate. The zone covers Queensland and the Northern Territory, and Gladstone is its industrial hub, where Queensland Alumina and Rio Tinto Yarwun reported covered emissions of 3.17 Mt and 2.05 Mt in 2024–25. Boyne smelter reported 0.94 Mt of covered emissions in the same reporting year. The Mount Isa support package keeps the copper smelter and the Townsville refinery operating for three more years, which sustains service and upgrade work in Queensland.

Southern Australia gains from smelter support packages

Southern Australia held a 10.0% share of 2025 value and grows at 5.83% a year, slightly above the national rate. The zone covers South Australia and Tasmania, where Nyrstar's Port Pirie facility reported covered emissions of 0.43 Mt in 2024–25 and the Bell Bay smelter reported 0.34 Mt. Public support for Port Pirie, Hobart and Whyalla during 2025 funds maintenance and upgrades, which favors precipitator rebuilds, scrubber refurbishment and filter replacement at these older plants.

Download Free Sample

Smelter support and new equipment since 2025

Precipitators, bag filters and scrubbers do the work

• Electrostatic precipitators charge dust and collect it on plates, and precipitator units remain the standard on calciners, smelters and coal boilers.
• Bag filters catch fine dust in fabric, with pulse jet and horizontal reverse air designs used at crushers, kilns and ore sheds.
• Wet and dry scrubbers remove sulfur dioxide and acid gases with caustic, lime or dual alkali chemistry at smelters and rare earth kilns.
• Nitrogen oxide reduction injects ammonia or urea into hot gas, and catalytic reduction systems are used where lower outlet limits apply.

Local fabricators compete with global filter makers

Competition centers on process know-how, local fabrication and the ability to service equipment at remote sites, rather than on price alone. Total Air Pollution Control, part of The Environmental Group, designs scrubbing and dust systems for mining and rare earth clients and won an off-gas scrubbing contract for a refinery in Angola in April 2026. Nederman MikroPul runs its Asia Pacific hub from Bayswater in Victoria and offers baghouses, cyclones and wet scrubbers. Fowlerex Technologies in Wetherill Park builds precipitators, scrubbers, baghouses and thermal oxidizers. Luehr Filter serves mine sites with bag filter systems, while Camfil Australia and Grydale supply standard and mobile dust collectors. Global makers supply the core of large air pollution control systems, while local firms win fabrication and service work.

Companies profiled and their roles in this market

Credence Research view on industrial emission control

Credence Research's view is that the Australia gas cleaning technologies market will grow at a steady pace because most spending protects plants that already exist. Public rescue packages for smelters in Queensland, South Australia and Tasmania confirm that governments want these plants to keep running, which keeps rebuild and service work flowing. New refineries, rare earth plants and waste-to-energy facilities add higher-value greenfield orders, mostly in Western Australia. Suppliers with local fabrication, test data for difficult gases and remote service crews are best placed, while coal plant work fades as retirements approach.

How the zone and segment estimates were built

The report uses 2025 as the base year on a calendar basis, and market values come from the Credence Research model. That model draws on Clean Energy Regulator facility emissions data, U.S. Geological Survey production data, state environment regulator pages, national air quality measures, government funding releases, company releases and stock exchange announcements. Zone shares and segment splits are Credence Research estimates, with zone shares guided by Safeguard covered emissions by state and the location of coal generation. Sources used are government pages, agency data, company filings and trade media, and no interviews or surveys were used.

Brownfield upgrades and new processing to 2035

The Australia gas cleaning technologies market is expected to reach USD 407.9 million by 2035, rising at a 5.60% CAGR during 2026–2035, as operators rebuild aging precipitators and add scrubbers to new processing plants. Particulate control keeps the largest share, while nitrogen oxide and organic gas control grows fastest with waste-to-energy and chemical plants. Western Australia stays the largest and fastest-growing zone, as refining and new processing plants keep adding projects. Coal retirements will reduce power station work, yet refining, smelting and mineral processing should keep demand resilient through the forecast period.

Note: The depth of individual sections depends on data availability for this market. Volume, capacity, trade and other unit-based metrics are included where applicable.