- Market Size (2026)
- USD 701.5 Mn
- Forecast (2036)
- USD 989.6 Mn
- CAGR (2026 to 2036)
- 3.5%
External Combustion Engine Market Size, Market Forecast and Outlook By FMI
The external combustion engine market was valued at USD 677.8 million in 2025. The market is set to reach USD 701.5 million by 2026-end and grow at a CAGR of 3.5% between 2026-2036 to reach USD 989.6 million by 2036. Steam Engine will dominate with a 46.3% share, while Industrial Manufacturing will lead with a 39.8% share.
Key Takeaways, Market Size, and Forecast
- 2026 Market Size: USD 701.52 million
- 2036 Market Size: USD 989.57 million
- Forecast CAGR: 3.5% from 2026 to 2036
- Absolute $ Opportunity: USD 288.04 million between 2026 and 2036
- Leading Product: Steam Engine
- Steam Engine Share in 2026: 46.3%
- Fastest-growing Country: China
- China CAGR: 4.73% through 2036
| Parameter | Details |
|---|---|
| Market Size in 2026 (Value) | USD 701.52 million |
| Market Forecast in 2036 (Value) | USD 989.57 million |
| CAGR (2026 to 2036) | 3.5% |
| Years Considered | 2016 to 2036 |
| Base Year | 2025 |
| Forecast Period | 2026 to 2036 |
| Units Considered | Value (USD Mn) |
| Fastest-growing Country | China |
Summary of the External Combustion Engine Market
- Demand and Growth Drivers
- Industrial process heat recovery and combined heat and power applications are expected to sustain demand for external combustion engines including Stirling and steam engine systems through the forecast period.
- Adoption of Stirling engine technology for distributed power generation is increasing due to fuel flexibility, quiet operation, and suitability for biomass, waste heat, and solar thermal energy conversion.
- Expansion of waste heat recovery systems in industrial manufacturing is creating demand for external combustion engines that convert low-grade thermal energy into useful mechanical or electrical output.
- Product and Segment View
- Steam engines account for 46.3% of the product segment, reflecting established use in industrial process steam applications, legacy power generation, and combined heat and power installations.
- Industrial manufacturing holds 39.8% of the end-use segment, driven by process heat recovery, CHP system deployment, and thermal energy conversion requirements across manufacturing facilities.
- Reciprocating engine technology leads at 42.0%, with piston-based external combustion engines serving CHP, waste heat recovery, and distributed generation applications.
- Geography and Competitive Outlook
- China is expected to lead growth at 4.73% CAGR through 2036, driven by industrial waste heat recovery investment, CHP adoption in manufacturing, and government energy efficiency programs.
- North America and Europe account for the largest market share by value, sustained by established CHP infrastructure, waste heat recovery investment, and distributed generation programs.
- Qnergy Inc. holds an estimated 19.0% market share, supported by free-piston Stirling engine technology for remote power and CHP applications with established industrial and military distribution.
- Analyst Opinion
- Nikhil Kaitwade, Principal Consultant at FMI says, 'Manufacturers that can deliver reliable Stirling and steam-based CHP systems with documented waste heat recovery efficiency and multi-fuel flexibility are positioned to capture industrial procurement share as energy efficiency regulations tighten and industrial operators seek to monetize low-grade thermal waste streams.'
- Growth reflects industrial energy efficiency investment, waste heat recovery economics, and distributed power generation demand in remote and off-grid applications.
- Demand is supported by CHP energy efficiency advantages, fuel flexibility for biomass and waste fuels, and quiet operation suitability for residential and urban installations.
- Adoption of Stirling engines is constrained by power output limitations, higher per-kW capital cost compared to internal combustion alternatives, and limited commercial deployment scale.
External Combustion Engine Market Definition
The external combustion engine market includes steam engines, Stirling engines, and related external combustion prime movers used for power generation, combined heat and power, waste heat recovery, and industrial process applications across manufacturing, power generation, and distributed energy systems.
External Combustion Engine Market Inclusions
Market scope covers products segmented by Product (Steam Engine, Steam Turbine, Stirling Engine, Organic Rankine Cycle Engine, Closed Cycle Gas Turbine), End Use Industry (Industrial Manufacturing, Energy And Power, Marine Industry, Transportation), Application (Pump, Ship, Thermal Power Plant, Train, Nuclear Power Plant, Industrial Heating), Fuel Type (Coal Based Engines, Biomass Based Engines, Natural Gas Based Engines, Solar Thermal Energy, Nuclear Heat Source), Power Output (Low, Medium, High), Component (Boiler Systems, Heat Exchangers, Engine Core), and Technology (Reciprocating Engine Technology, Turbine Based Technology, Thermodynamic Cycle). Revenue estimates span 2026 to 2036 across North America, Latin America, Western Europe, Eastern Europe, East Asia, South Asia and Pacific, and Middle East and Africa.
External Combustion Engine Market Exclusions
The scope excludes gas turbines, internal combustion engines, and fuel cells unless integrated with external combustion heat sources.
External Combustion Engine Market Research Methodology
- Primary Research: FMI analysts conducted interviews with industrial energy system designers, CHP project developers, and external combustion engine manufacturers across key industrial markets.
- Desk Research: Combined data from industrial energy system databases, CHP installation records, and engine manufacturer disclosures.
- Market Sizing and Forecasting: Bottom-up aggregation of CHP installation data, waste heat recovery project pipelines, and distributed generation equipment deployment across end-use industries and regions.
- Data Validation: Cross-checked quarterly against CHP installation statistics, energy equipment trade data, and manufacturer revenue disclosures.
Why is the External Combustion Engine Market Growing?
- Industrial waste heat recovery using external combustion engines to convert low-grade thermal energy (100 to 300 degrees C) into electricity or mechanical power is generating project-level demand from energy-intensive manufacturing operations.
- CHP system deployment in manufacturing, commercial buildings, and district heating creates demand for external combustion prime movers that achieve 80 to 90% total fuel utilization efficiency.
- Stirling engine technology advancement is enabling applications in distributed power generation, solar thermal conversion, and biomass CHP where fuel flexibility and quiet operation create installation advantages.
The external combustion engine market grows at a moderate pace driven by industrial energy efficiency investment and CHP deployment. Steam engines maintain the largest product share at 46.3%, with established applications in industrial process steam, legacy power generation, and CHP installations where steam production serves both process heat and power generation requirements simultaneously.
Stirling engines represent the technology growth segment, with free-piston and kinematic Stirling designs gaining application in distributed generation, solar thermal power, and CHP for residential and commercial buildings. Stirling engine advantages include fuel flexibility (any external heat source), quiet operation, and sealed working gas systems that require minimal maintenance. Power output limitations of 1 to 100 kW for commercial units constrain applications to distributed and small-scale power generation.
Waste heat recovery represents the primary growth driver as industrial operators seek to improve energy efficiency and reduce operating costs. External combustion engines including Organic Rankine Cycle and Stirling-based systems convert waste heat from industrial processes, engine exhaust, and flue gas into useful power, providing economic return through reduced grid electricity consumption and potential export revenue.
Market Segmentation Analysis
- Steam engines hold 46.3%, reflecting established industrial CHP, process steam, and legacy power generation applications.
- Industrial manufacturing at 39.8% generates the largest demand through process heat recovery, CHP deployment, and thermal energy management.
- Reciprocating technology at 42.0% serves CHP and distributed generation through piston-based external combustion conversion.
The market is segmented by product, end-use industry, application, fuel type, power output, component, technology, and region. Products include steam engines, steam turbines, Stirling engines, Organic Rankine Cycle engines, and closed cycle gas turbines. Applications include pumps, ships, thermal power plants, trains, nuclear power plants, and industrial heating.
Insights into the Steam Engine Product Segment
Steam engines at 46.3% serve industrial CHP, process steam expansion, and legacy power generation. Small-scale steam expanders and micro-turbines for waste heat recovery represent the growth sub-category within the steam engine segment.
Procurement follows CHP project development timelines, with steam engine specification as part of integrated boiler, turbine/expander, and generator system design.
Insights into the Stirling Engine Product Segment
Stirling engines represent the technology-focused growth segment, with free-piston designs from Qnergy and kinematic designs from other manufacturers serving distributed generation, remote power, and solar thermal applications. Commercial units in the 1 to 25 kW range serve residential CHP, telecom tower power, and remote monitoring applications.
External Combustion Engine Market Drivers, Restraints, and Opportunities
- Industrial waste heat recovery economics create project-level demand where capital payback from recovered energy justifies external combustion engine installation investment.
- Per-kW capital cost premiums over internal combustion alternatives constrain external combustion engine adoption to applications where fuel flexibility or heat source characteristics favor external combustion.
- CHP energy efficiency achieving 80 to 90% total fuel utilization creates economic advantage over separate heat and power generation.
The market benefits from energy efficiency investment, CHP deployment, and waste heat recovery. Restraints include capital cost premiums and power output limitations. Opportunities exist in industrial waste heat, biomass CHP, and Stirling distributed generation.
Waste Heat Recovery
Demand is shaped by industrial waste heat availability and the economics of converting thermal energy to electricity using external combustion engine systems.
CHP Deployment
Growth reflects CHP installation programs that achieve higher total fuel utilization than separate heat and power systems, with external combustion engines serving as the prime mover in biomass and waste-fueled CHP.
Distributed Generation
Adoption of Stirling engines for remote and distributed power reflects fuel flexibility and reliability advantages in applications where grid connection is unavailable or unreliable.
Analysis of External Combustion Engine Market By Key Countries
.webp "Top Country Growth Comparison External Combustion Engine Market Cagr (2026 2036)")
| Country | CAGR |
|---|---|
| China | 4.73% |
| India | 4.38% |
| USA | 3.7% |
| EU | 3.6% |
| South Korea | 3.4% |
| Japan | 3.2% |
- China leads growth at 4.73% CAGR, driven by industrial waste heat recovery investment, government energy efficiency mandates, and CHP adoption in manufacturing districts.
- India at 4.38% reflects industrial energy efficiency programs, biomass CHP opportunity in agricultural processing, and waste heat recovery in thermal power generation.
- The USA (3.7%) and the EU (3.6%) sustain demand through established CHP infrastructure, waste heat recovery investment, and distributed generation deployment.
The global external combustion engine market is projected to grow at 3.5% CAGR from 2026 to 2036. The analysis covers more than 30 countries, with key markets discussed below.
Sales Analysis of External Combustion Engine Market in China
Industrial energy efficiency mandates and waste heat recovery investment drive demand. Growth at 4.73% through 2036 reflects government energy conservation targets, CHP deployment in industrial parks, and domestic manufacturer capability development.
- Government 14th Five-Year Plan energy efficiency targets mandate industrial waste heat recovery that creates project-level demand for external combustion power generation systems.
- Industrial park CHP systems using steam engines and ORC technology serve manufacturing districts where centralized heat and power improves total energy efficiency.
- Domestic external combustion engine manufacturers are developing competitive systems targeting Chinese industrial waste heat recovery project specifications.
Demand Outlook for External Combustion Engine Market in India
Industrial energy efficiency and biomass availability create CHP opportunity. Growth at 4.38% through 2036 reflects agricultural processing waste heat, industrial efficiency programs, and distributed generation in off-grid applications.
- Biomass availability from agricultural processing including rice husk, sugarcane bagasse, and crop residue creates fuel supply for biomass-fired external combustion CHP systems.
- Bureau of Energy Efficiency industrial energy efficiency programs create awareness and incentive for waste heat recovery installations using ORC and steam expander technology.
- Distributed power generation using Stirling engines serves telecom tower, remote monitoring, and off-grid applications across rural and industrial settings.
In-depth Analysis of External Combustion Engine Market in the United States
Established CHP infrastructure and distributed generation programs define the US market. Growth at 3.7% through 2036 reflects waste heat recovery investment, military remote power, and industrial energy efficiency.
- DOE CHP Technical Assistance Partnerships promote industrial CHP adoption that includes external combustion prime movers in waste heat and biomass applications.
- US military remote power programs procure Stirling engine systems for forward operating base and remote monitoring power where fuel flexibility and quiet operation are specification priorities.
- Industrial waste heat recovery using ORC and steam expander systems is gaining adoption in manufacturing, refineries, and process industries where thermal waste streams provide viable energy recovery economics.
Opportunity Analysis of External Combustion Engine Market in the EU
EU energy efficiency directives and CHP promotion policies shape the European market. Growth at 3.6% through 2036 reflects Energy Efficiency Directive compliance, biomass CHP programs, and district heating integration.
- EU Energy Efficiency Directive promotes CHP as a primary energy efficiency measure, creating regulatory support for external combustion engine deployment in industrial and district heating applications.
- Biomass CHP programs in Scandinavia, Germany, and Austria utilize external combustion engines for combined heat and power from wood chips, pellets, and agricultural biomass fuels.
- District heating systems in Northern European cities integrate external combustion CHP units that provide simultaneous heat supply and electricity generation for urban energy networks.
Future Outlook for External Combustion Engine Market in Japan
Energy efficiency culture and distributed generation investment characterize the Japanese market. Growth at 3.2% through 2036 reflects waste heat recovery, residential CHP (ENE-FARM), and industrial efficiency investment.
- Japan's ENE-FARM residential CHP program promotes micro-CHP units including fuel cell and Stirling engine systems for home energy generation and heating.
- Industrial waste heat recovery in Japanese manufacturing facilities uses ORC and steam expander systems to improve energy efficiency and reduce grid electricity dependence.
- Post-Fukushima distributed generation emphasis sustains investment in on-site power generation including external combustion CHP that provides energy security independent of grid supply.
Competitive Landscape and Strategic Positioning
- Qnergy Inc. holds an estimated 19.0% market share, supported by free-piston Stirling engine technology for remote power, CHP, and industrial applications with established military and industrial distribution.
- Siemens Energy and FlexEnergy maintain positions through steam turbine, ORC, and micro-turbine technology serving industrial CHP and waste heat recovery applications.
- Aisin Corporation and Microgen Engine Corporation serve the residential and commercial micro-CHP segment with Stirling engine-based home energy systems.
Qnergy leads with an estimated 19.0% share through free-piston Stirling engine technology providing reliable distributed power for remote, military, and industrial applications. The sealed helium working gas system delivers maintenance-free operation.
Siemens Energy serves the industrial steam turbine and CHP market through its distributed power portfolio. FlexEnergy provides micro-turbine and waste heat recovery systems for industrial applications.
Aisin Corporation provides ENE-FARM micro-CHP Stirling units for Japanese residential applications. Microgen Engine Corporation develops compact Stirling engines for European residential CHP. Genoastirling AB provides Swedish-designed Stirling engines for biomass CHP.
Barriers include the specialized manufacturing capability for Stirling and steam engine systems, limited production volumes compared to internal combustion alternatives, project engineering requirements for CHP integration, and the performance documentation needed for energy efficiency incentive eligibility.
Key Companies in the External Combustion Engine Market
Key global companies leading the external combustion engine market include:
- Qnergy Inc. (USA), Siemens Energy (Germany), and FlexEnergy Inc. (USA) lead with external combustion engine technology, industrial CHP solutions, and established distribution for power generation and waste heat recovery applications.
- Aisin Corporation (Japan), Microgen Engine Corporation (UK), and Genoastirling AB (Sweden) maintain positions in residential and commercial micro-CHP through Stirling engine technology development and regional distribution.
- Sunpower Inc. (USA), Beijing Huanda (China), and various ORC system integrators serve specialized segments including solar thermal, Chinese industrial, and waste heat recovery system integration.
Competitive Benchmarking: External Combustion Engine Market
| Company | Technology | Power Range | Application Focus | Geographic Footprint |
|---|---|---|---|---|
| Qnergy Inc. | High | Low-Medium | Remote/CHP | N. America, Global |
| Siemens Energy | High | Medium-High | Industrial CHP | Global |
| FlexEnergy Inc. | Medium | Low-Medium | Waste Heat | N. America |
| Aisin Corporation | Medium | Low | Residential CHP | Japan |
| Microgen Engine Corp. | Medium | Low | Residential CHP | Europe |
| Genoastirling AB | Medium | Low-Medium | Biomass CHP | Europe |
| Sunpower Inc. | Medium | Low | Solar/Remote | N. America |
Source: Future Market Insights competitive analysis, 2026.
Company Portfolio Signals in External Combustion Engine Market
- In 2025, Qnergy Inc. launched an updated free-piston Stirling generator with enhanced waste heat recovery capability for industrial applications converting 150 to 300 degree C thermal streams to electricity.
- Siemens Energy participates in steam turbine and industrial energy equipment applications relevant to waste heat recovery and power generation projects.
Key Players in the External Combustion Engine Market
Major Global Players
- Qnergy Inc.
- Siemens Energy
- FlexEnergy Inc.
- Aisin Corporation
- Genoastirling AB
Emerging Players/Startups
- Microgen Engine Corporation
- Sunpower Inc.
- Beijing Huanda Automotive Engineering
- Infinia Corporation
- Cleanergy AB
Report Scope and Coverage
| Parameter | Details |
|---|---|
| Market size by 2036 | USD 989.57 million |
| Growth rate | 3.5% CAGR (2026 to 2036) |
| Forecast period | 2026 to 2036 |
| Base year | 2025 |
| Market size in 2026 | USD 701.52 million |
| By Product | Steam Engine, Steam Turbine, Stirling Engine, Organic Rankine Cycle Engine, Closed Cycle Gas Turbine |
| By End-Use Industry | Industrial Manufacturing, Energy And Power, Marine Industry, Transportation |
| By Application | Pump, Ship, Thermal Power Plant, Train, Nuclear Power Plant, Industrial Heating |
| By Fuel Type | Coal Based Engines, Biomass Based Engines, Natural Gas Based Engines, Solar Thermal Energy, Nuclear Heat Source |
| By Power Output | Low, Medium, High |
| By Component | Boiler Systems, Heat Exchangers, Engine Core |
| By Technology | Reciprocating Engine Technology, Turbine Based Technology, Thermodynamic Cycle |
| Regions covered | North America, Latin America, Western Europe, Eastern Europe, East Asia, South Asia and Pacific, Middle East and Africa |
| Countries covered | USA, UK, Germany, France, South Korea, Japan, China, India, 30 plus countries |
| Key companies profiled | Qnergy, Siemens Energy, FlexEnergy, Aisin, Genoastirling, Microgen, Sunpower, Beijing Huanda |
| Approach | Hybrid bottom-up and top-down methodology starting with CHP installation data and waste heat recovery projects, projecting demand across products and regions. |
Segmentation
External Combustion Engine Market Segmented by Product:
- Steam Engine
- Reciprocating Steam Engine
- Single Cylinder Steam Engine
- Multi Cylinder Steam Engine
- Industrial Steam Engines
- Reciprocating Steam Engine
- Steam Turbine
- Axial Flow Steam Turbine
- Condensing Steam Turbine
- Non Condensing Steam Turbine
- High Pressure Steam Turbine
- Axial Flow Steam Turbine
- Stirling Engine
- Alpha Type Stirling Engine
- High Efficiency Stirling Engine
- Industrial Stirling Systems
- Beta Type Stirling Engine
- Compact Stirling Engines
- Low Temperature Stirling Systems
- Gamma Type Stirling Engine
- Small Scale Power Engines
- Domestic Stirling Units
- Alpha Type Stirling Engine
- Organic Rankine Cycle Engine
- Low Temperature Heat Engines
- Waste Heat Recovery Systems
- Geothermal ORC Systems
- Low Temperature Heat Engines
- Closed Cycle Gas Turbine
- External Heat Gas Turbine
- Solar Thermal Gas Turbine
- Biomass Fired Gas Turbine
- External Heat Gas Turbine
External Combustion Engine Market Segmented by End Use Industry:
- Industrial Manufacturing
- Process Industries
- Chemical Industry
- Oil And Gas Processing
- Process Industries
- Energy And Power
- Utility Sector
- Electricity Generation
- Grid Supply
- Utility Sector
- Marine Industry
- Shipping Sector
- Commercial Shipping
- Naval Applications
- Shipping Sector
- Transportation
- Rail Transport
- Locomotive Systems
- Heritage Transport
- Rail Transport
External Combustion Engine Market Segmented by Application:
- Pump
- Water Pumping Systems
- Agricultural Irrigation Pumps
- Industrial Fluid Pumps
- Water Pumping Systems
- Ship
- Marine Propulsion Systems
- Cargo Vessel Engines
- Naval Ship Engines
- Marine Propulsion Systems
- Thermal Power Plant
- Utility Power Generation
- Coal Based Plants
- Gas Based Plants
- Utility Power Generation
- Train
- Railway Propulsion Systems
- Steam Locomotives
- Heritage Rail Systems
- Railway Propulsion Systems
- Nuclear Power Plant
- Power Generation Systems
- Auxiliary Power Units
- Backup Power Systems
- Power Generation Systems
- Industrial Heating
- Process Industry Heating
- Chemical Processing Plants
- Refinery Heating Systems
- Process Industry Heating
External Combustion Engine Market Segmented by Fuel Type:
- Coal Based Engines
- Solid Fuel Combustion
- Industrial Coal Systems
- Power Plant Boilers
- Solid Fuel Combustion
- Biomass Based Engines
- Renewable Fuel Systems
- Agricultural Residue Fuel
- Wood Pellet Combustion
- Renewable Fuel Systems
- Natural Gas Based Engines
- Gaseous Fuel Systems
- Clean Combustion Engines
- Industrial Gas Systems
- Gaseous Fuel Systems
- Solar Thermal Energy
- Solar Powered Systems
- Concentrated Solar Power Engines
- Solar Stirling Systems
- Solar Powered Systems
- Nuclear Heat Source
- Reactor Based Systems
- Nuclear Heat Driven Engines
- Reactor Based Systems
External Combustion Engine Market Segmented by Power Output:
- Low Power Output
- Below 1 MW Systems
- Small Scale Applications
- Residential Energy Systems
- Below 1 MW Systems
- Medium Power Output
- 1 MW To 10 MW Systems
- Industrial Applications
- Distributed Power Systems
- 1 MW To 10 MW Systems
- High Power Output
- Above 10 MW Systems
- Utility Scale Power Plants
- Grid Connected Systems
- Above 10 MW Systems
External Combustion Engine Market Segmented by Component:
- Boiler Systems
- Heat Generation Units
- High Pressure Boilers
- Industrial Boilers
- Heat Generation Units
- Heat Exchangers
- Thermal Transfer Systems
- Regenerative Heat Exchangers
- Cooling Systems
- Thermal Transfer Systems
- Engine Core
- Power Conversion Unit
- Pistons And Cylinders
- Turbine Blades
- Power Conversion Unit
- Control Systems
- Automation Systems
- Temperature Control Units
- Pressure Regulation Systems
- Automation Systems
External Combustion Engine Market Segmented by Technology:
- Reciprocating Engine Technology
- Piston Based Systems
- Crankshaft Mechanisms
- Linear Motion Systems
- Piston Based Systems
- Turbine Based Technology
- Rotary Systems
- Axial Turbines
- Radial Turbines
- Rotary Systems
- Thermodynamic Cycle
- Closed Cycle Systems
- Rankine Cycle
- Stirling Cycle
- Closed Cycle Systems
External Combustion Engine Market by Region:
- North America
- USA
- Canada
- Mexico
- Latin America
- Brazil
- Chile
- Rest of Latin America
- Western Europe
- Germany
- UK
- Italy
- Spain
- France
- Nordic
- BENELUX
- Rest of Western Europe
- Eastern Europe
- Russia
- Poland
- Hungary
- Balkan & Baltic
- Rest of Eastern Europe
- East Asia
- China
- Japan
- South Korea
- South Asia and Pacific
- India
- ASEAN
- Australia & New Zealand
- Rest of South Asia and Pacific
- Middle East & Africa
- Kingdom of Saudi Arabia
- Other GCC Countries
- Turkiye
- South Africa
- Other African Union
- Rest of Middle East & Africa
Research Sources and Bibliography
- 1. International Energy Agency. (2025). IEA Combined Heat and Power Technology Report. IEA.
- 2. USA Department of Energy. (2024). DOE CHP Technical Assistance Partnership Report. DOE.
- 3. European Commission. (2025). EC Energy Efficiency Directive CHP Promotion Framework. EC.
- 4. American Society of Mechanical Engineers. (2024). ASME Steam Engine and Turbine Performance Standards. ASME.
- 5. World Energy Council. (2025). WEC Distributed Energy and CHP Outlook. WEC.
This bibliography is provided for reader reference. The full Future Market Insights report contains the complete reference list with publication dates, URLs, and supporting data for all cited works.
This Report Answers
- Estimating market size and revenue from 2026 to 2036.
- Segmentation by product, end-use, application, fuel type, power output, component, and technology.
- Regional insights across more than 30 markets.
- Technology analysis covering steam, Stirling, and ORC external combustion systems.
- Competitive landscape assessment.
- Investment opportunities in waste heat recovery and biomass CHP.
- Supply chain and project development analysis.
- Data delivery in PDF and Excel formats.
Frequently Asked Questions
How big is the external combustion engine market in 2026?
The global external combustion engine market is estimated to be valued at USD 701.5 million in 2026.
What will be the size of external combustion engine market in 2036?
The market size for the external combustion engine market is projected to reach USD 989.6 million by 2036.
How much will be the external combustion engine market growth between 2026 and 2036?
The external combustion engine market is expected to grow at a 3.5% CAGR between 2026 and 2036.
What are the key product types in the external combustion engine market?
The key product types in the external combustion engine market are Steam Engine, Steam Turbine, Stirling Engine, Organic Rankine Cycle Engine, and Closed Cycle Gas Turbine.
Which end use industry segment is expected to contribute significant share in the external combustion engine market in 2026?
In terms of end use industry, industrial manufacturing segment is expected to command 39.8% share in the external combustion engine market in 2026.
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Get PDFTable of Content
- Executive Summary
- Global Market Outlook
- Demand-side Trends
- Supply-side Trends
- Technology Roadmap Analysis
- Analysis and Recommendations
- Market Overview
- Market Coverage / Taxonomy
- Market Definition / Scope / Limitations
- Research Methodology
- Chapter Orientation
- Analytical Lens and Working Hypotheses
- Market Structure, Signals, and Trend Drivers
- Benchmarking and Cross-market Comparability
- Market Sizing, Forecasting, and Opportunity Mapping
- Research Design and Evidence Framework
- Desk Research Programme (Secondary Evidence)
- Company Annual and Sustainability Reports
- Peer-reviewed Journals and Academic Literature
- Corporate Websites, Product Literature, and Technical Notes
- Earnings Decks and Investor Briefings
- Statutory Filings and Regulatory Disclosures
- Technical White Papers and Standards Notes
- Trade Journals, Industry Magazines, and Analyst Briefs
- Conference Proceedings, Webinars, and Seminar Materials
- Government Statistics Portals and Public Data Releases
- Press Releases and Reputable Media Coverage
- Specialist Newsletters and Curated Briefings
- Sector Databases and Reference Repositories
- FMI Internal Proprietary Databases and Historical Market Datasets
- Subscription Datasets and Paid Sources
- Social Channels, Communities, and Digital Listening Inputs
- Additional Desk Sources
- Expert Input and Fieldwork (Primary Evidence)
- Primary Modes
- Qualitative Interviews and Expert Elicitation
- Quantitative Surveys and Structured Data Capture
- Blended Approach
- Why Primary Evidence is Used
- Field Techniques
- Interviews
- Surveys
- Focus Groups
- Observational and In-context Research
- Social and Community Interactions
- Stakeholder Universe Engaged
- C-suite Leaders
- Board Members
- Presidents and Vice Presidents
- R&D and Innovation Heads
- Technical Specialists
- Domain Subject-matter Experts
- Scientists
- Physicians and Other Healthcare Professionals
- Governance, Ethics, and Data Stewardship
- Research Ethics
- Data Integrity and Handling
- Primary Modes
- Tooling, Models, and Reference Databases
- Desk Research Programme (Secondary Evidence)
- Data Engineering and Model Build
- Data Acquisition and Ingestion
- Cleaning, Normalisation, and Verification
- Synthesis, Triangulation, and Analysis
- Quality Assurance and Audit Trail
- Market Background
- Market Dynamics
- Drivers
- Restraints
- Opportunity
- Trends
- Scenario Forecast
- Demand in Optimistic Scenario
- Demand in Likely Scenario
- Demand in Conservative Scenario
- Opportunity Map Analysis
- Product Life Cycle Analysis
- Supply Chain Analysis
- Investment Feasibility Matrix
- Value Chain Analysis
- PESTLE and Porter’s Analysis
- Regulatory Landscape
- Regional Parent Market Outlook
- Production and Consumption Statistics
- Import and Export Statistics
- Market Dynamics
- Global Market Analysis 2016 to 2025 and Forecast, 2026 to 2036
- Historical Market Size Value (USD Million) Analysis, 2016 to 2025
- Current and Future Market Size Value (USD Million) Projections, 2026 to 2036
- Y-o-Y Growth Trend Analysis
- Absolute $ Opportunity Analysis
- Global Market Pricing Analysis 2016 to 2025 and Forecast 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Product
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By Product , 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By Product , 2026 to 2036
- Steam Engine
- Reciprocating Steam Engine
- Single Cylinder Steam Engine
- Multi Cylinder Steam Engine
- Industrial Steam Engines
- Steam Turbine
- Axial Flow Steam Turbine
- Condensing Steam Turbine
- Non Condensing Steam Turbine
- High Pressure Steam Turbine
- Stirling Engine
- Alpha Type Stirling Engine
- High Efficiency Stirling Engine
- Industrial Stirling Systems
- Beta Type Stirling Engine
- Compact Stirling Engines
- Organic Rankine Cycle Engine
- Low Temperature Heat Engines
- Waste Heat Recovery Systems
- Geothermal ORC Systems
- Closed Cycle Gas Turbine
- External Heat Gas Turbine
- Solar Thermal Gas Turbine
- Biomass Fired Gas Turbine
- Steam Engine
- Y-o-Y Growth Trend Analysis By Product , 2016 to 2025
- Absolute $ Opportunity Analysis By Product , 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By End Use Industry
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By End Use Industry, 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By End Use Industry, 2026 to 2036
- Industrial Manufacturing
- Process Industries
- Chemical Industry
- Oil And Gas Processing
- Energy And Power
- Utility Sector
- Electricity Generation
- Grid Supply
- Marine Industry
- Shipping Sector
- Commercial Shipping
- Naval Applications
- Transportation
- Rail Transport
- Locomotive Systems
- Heritage Transport
- Industrial Manufacturing
- Y-o-Y Growth Trend Analysis By End Use Industry, 2016 to 2025
- Absolute $ Opportunity Analysis By End Use Industry, 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Application
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By Application, 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By Application, 2026 to 2036
- Pump
- Water Pumping Systems
- Agricultural Irrigation Pumps
- Industrial Fluid Pumps
- Ship
- Marine Propulsion Systems
- Cargo Vessel Engines
- Naval Ship Engines
- Thermal Power Plant
- Utility Power Generation
- Coal Based Plants
- Gas Based Plants
- Train
- Railway Propulsion Systems
- Steam Locomotives
- Heritage Rail Systems
- Nuclear Power Plant
- Power Generation Systems
- Auxiliary Power Value (USD Million)s
- Backup Power Systems
- Industrial Heating
- Process Industry Heating
- Chemical Processing Plants
- Refinery Heating Systems
- Pump
- Y-o-Y Growth Trend Analysis By Application, 2016 to 2025
- Absolute $ Opportunity Analysis By Application, 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Fuel Type
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By Fuel Type, 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By Fuel Type, 2026 to 2036
- Coal Based Engines
- Solid Fuel Combustion
- Industrial Coal Systems
- Power Plant Boilers
- Biomass Based Engines
- Renewable Fuel Systems
- Agricultural Residue Fuel
- Wood Pellet Combustion
- Natural Gas Based Engines
- Gaseous Fuel Systems
- Clean Combustion Engines
- Industrial Gas Systems
- Solar Thermal Energy
- Solar Powered Systems
- Concentrated Solar Power Engines
- Solar Stirling Systems
- Nuclear Heat Source
- Reactor Based Systems
- Nuclear Heat Driven Engines
- Coal Based Engines
- Y-o-Y Growth Trend Analysis By Fuel Type, 2016 to 2025
- Absolute $ Opportunity Analysis By Fuel Type, 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Power Output
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By Power Output, 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By Power Output, 2026 to 2036
- Low Power Output
- Below 1 MW Systems
- Small Scale Applications
- Residential Energy Systems
- Medium Power Output
- 1 MW To 10 MW Systems
- Industrial Applications
- Distributed Power Systems
- High Power Output
- Above 10 MW Systems
- Utility Scale Power Plants
- Grid Connected Systems
- Low Power Output
- Y-o-Y Growth Trend Analysis By Power Output, 2016 to 2025
- Absolute $ Opportunity Analysis By Power Output, 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Component
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By Component, 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By Component, 2026 to 2036
- Boiler Systems
- Heat Generation Value (USD Million)s
- High Pressure Boilers
- Industrial Boilers
- Heat Exchangers
- Thermal Transfer Systems
- Regenerative Heat Exchangers
- Cooling Systems
- Engine Core
- Power Conversion Value (USD Million)
- Pistons And Cylinders
- Turbine Blades
- Control Systems
- Automation Systems
- Temperature Control Value (USD Million)s
- Pressure Regulation Systems
- Boiler Systems
- Y-o-Y Growth Trend Analysis By Component, 2016 to 2025
- Absolute $ Opportunity Analysis By Component, 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Technology
- Introduction / Key Findings
- Historical Market Size Value (USD Million) Analysis By Technology, 2016 to 2025
- Current and Future Market Size Value (USD Million) Analysis and Forecast By Technology, 2026 to 2036
- Reciprocating Engine Technology
- Piston Based Systems
- Crankshaft Mechanisms
- Linear Motion Systems
- Turbine Based Technology
- Rotary Systems
- Axial Turbines
- Radial Turbines
- Thermodynamic Cycle
- Closed Cycle Systems
- Rankine Cycle
- Stirling Cycle
- Reciprocating Engine Technology
- Y-o-Y Growth Trend Analysis By Technology, 2016 to 2025
- Absolute $ Opportunity Analysis By Technology, 2026 to 2036
- Global Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Region
- Introduction
- Historical Market Size Value (USD Million) Analysis By Region, 2016 to 2025
- Current Market Size Value (USD Million) Analysis and Forecast By Region, 2026 to 2036
- North America
- Latin America
- Western Europe
- Eastern Europe
- East Asia
- South Asia and Pacific
- Middle East & Africa
- Market Attractiveness Analysis By Region
- North America Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- USA
- Canada
- Mexico
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- Latin America Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- Brazil
- Chile
- Rest of Latin America
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- Western Europe Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- Germany
- UK
- Italy
- Spain
- France
- Nordic
- BENELUX
- Rest of Western Europe
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- Eastern Europe Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- Russia
- Poland
- Hungary
- Balkan & Baltic
- Rest of Eastern Europe
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- East Asia Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- China
- Japan
- South Korea
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- South Asia and Pacific Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- India
- ASEAN
- Australia & New Zealand
- Rest of South Asia and Pacific
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- Middle East & Africa Market Analysis 2016 to 2025 and Forecast 2026 to 2036, By Country
- Historical Market Size Value (USD Million) Trend Analysis By Market Taxonomy, 2016 to 2025
- Market Size Value (USD Million) Forecast By Market Taxonomy, 2026 to 2036
- By Country
- Kingdom of Saudi Arabia
- Other GCC Countries
- Turkiye
- South Africa
- Other African Union
- Rest of Middle East & Africa
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- By Country
- Market Attractiveness Analysis
- By Country
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Key Takeaways
- Key Countries Market Analysis
- USA
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Canada
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Mexico
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Brazil
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Chile
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Germany
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- UK
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Italy
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Spain
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- France
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- India
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- ASEAN
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Australia & New Zealand
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- China
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Japan
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- South Korea
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Russia
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Poland
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Hungary
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Kingdom of Saudi Arabia
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Turkiye
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- South Africa
- Pricing Analysis
- Market Share Analysis, 2025
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- USA
- Market Structure Analysis
- Competition Dashboard
- Competition Benchmarking
- Market Share Analysis of Top Players
- By Regional
- By Product
- By End Use Industry
- By Application
- By Fuel Type
- By Power Output
- By Component
- By Technology
- Competition Analysis
- Competition Deep Dive
- Qnergy Inc.
- Overview
- Product Portfolio
- Profitability by Market Segments (Product/End Use Industry/Application/Fuel Type/Power Output/Component/Technology/Region)
- Sales Footprint
- Strategy Overview
- Marketing Strategy
- Product Strategy
- Channel Strategy
- Siemens Energy
- FlexEnergy Inc.
- Aisin Corporation
- Genoastirling AB
- Microgen Engine Corporation
- Sunpower Inc.
- Beijing Huanda Automotive Engineering
- Reliable Steam Engine Co.
- Spilling Technologies GmbH
- Qnergy Inc.
- Competition Deep Dive
- Assumptions & Acronyms Used
