The grate‑fired boilers market is on a steep growth curve, projected to rise from USD 2.49 M in 2019 to USD 12.66 M by 2029, at a blistering 22.6% CAGR (2022–29). This surge stems from a shift toward biomass-based power, rising municipal waste-to-energy projects, and tightening emissions regulations.

Grate-Fired Boilers Market

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Market Snapshot & Core Drivers

• Explosive Growth Forecast
  From USD 2.49 M in 2019➝USD 12.66 M by 2029 (CAGR 22.6%).
  
  

• Renewables & Waste-to-Energy Rise
  Surge in municipal solid waste generation—China alone generates over 15% globally—is fueling investments in waste-to-energy plants leveraging grate-fired boilers.
  
  

• Environmental Regulations & Fuel Diversification
  Grate-fired boilers can burn varied biomass sources with minimal prep, matching new emissions standards that penalize older fossil-fuel systems.
  
  

• Power and Heat Generation Needs
  Increased industrial and population energy demands are driving capital inflows into biomass-fired power systems.
  
  

Global Market Outlook

• Asia‑Pacific Leadership
  APAC leads growth, especially China: biomass power capacity grew from 1.4 GW (2006) to 14.88 GW (2017), targeting 30 GW by 2030. Regional expansion is supported by agricultural and forestry residues as fuel.
  
  

• North America & Europe Growth
  While slower, markets in the U.S. and Europe grow steadily due to incentives for green energy, municipal solid waste projects, and updates to coal-fired systems.
  
  

U.S. Trends

• Industrial Efficiency Drive
  The U.S. industrial boiler market is valued at USD 1.30 B (2024), growing at 3.4% CAGR to 2030, driven by efficiency upgrades and shifting biomass/renewables focus.
  
  

• Emissions Compliance
  U.S. EPA regulations press utilities and industries to replace or retrofit existing boilers, making biomass-fired grate systems more attractive.
  
  

Japan Trends

• Biomass Boilers Gaining Ground
  Japan’s biomass-fired boiler market grew from USD 285.2 M (2024) to projected USD 459.9 M (2030) at 8.4% CAGR. Pellet boilers dominate the segment.
  
  

• Aging Infrastructure & Energy Security
  Japan increasingly relies on biomass boilers to reduce fossil fuel dependence and retrofit aging thermal plants to meet climate goals.
  
  

Technology & Segment Innovations

• Types of Grates
  Includes travelling, reciprocating, and vibrating grates, each suited to different fuel types and plant sizes.
  
  

• Capacity Shift
  Demand is increasing for large-scale (>200 MW) plants using municipal solid waste and refuse-derived fuels, following global emissions rules.

• Efficiency Enhancements
  Secondary air systems, staged combustion, and CFD modelling are boosting grate efficiency and reducing emissions.
  
  

Key Growth Opportunities

• Waste-to-Energy Projects
  Rising MSW volumes require thermal treatment — grate-fired systems are proven and cost-effective.
  
  

• Biomass Boiler Retrofits
  Industries and utilities transitioning from coal-fired systems benefit by switching to biomass grates for compliance.
  
  

• Large-Scale Infrastructure
  Increased investment in >200 MW plants worldwide supports demand for high-capacity grate-fired systems.
  
  

• Advanced Combustion R&D
  Real-time control using secondary air staging and combustion optimization opens ground for AI-enhanced systems.
  
  

Challenges & Constraints

• Lower Efficiency & Higher Capital Cost
  Grate-fired boilers require more fuel prep and cleaning, and have lower thermal efficiency than fluidized bed systems.
  
  

• Feedstock Sourcing & Logistics
  Biomass and MSW procurement, transport, and consistency issues can delay or stall projects.
  
  

• Regulatory Delays
  Environmental clearance processes often slow down biomass boiler installations, particularly in emerging economies.
  
  

Key Players

Major firms fueling this market include:

• Mitsubishi Heavy Industries
  
  

• Kawasaki Heavy Industries
  
  

• Viessmann Werke GmbH & Co. KG
  
  

• Isgec Heavy Engineering Ltd.
  
  

• DP CleanTech
  
  

• Zhengzhou Boiler Group
  
  

• Thermax Limited
  
  

• Jinan Boiler Group.
  
  

These companies are pushing growth through partnerships, advanced combustion tech, and capacity expansion.

Expert Insight

“Grate‑fired boilers offer versatile biomass combustion with minimal fuel prep—key for renewable energy strategies,” explains DataM Intelligence.

“Efficiency upgrades and new EPA emission standards make these systems more attractive for waste‑to‑energy and retrofits,” notes emissions regulation research.

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Strategic Roadmap

To capture this growth, stakeholders should:

• Innovate in secondary-air systems, CFD modelling, and digital combustion control.
  
  

• Scale up retrofit projects converting aging coal boilers to biomass.
  
  

• Integrate grate-fired units in municipal waste and energy strategy planning.

• Collaborate across public–private sectors for funding and infrastructure build-out.