Stirling engines are heat engines that function based on a closed regenerative thermodynamic cycle, transferring heat to and from a working fluid, which is a gas, at varying temperature levels. Unlike internal combustion engines, Stirling engines are recognized for their high efficiency and versatility, as they can utilize a range of heat sources, including solar, geothermal, or waste heat.
The primary types of Stirling engines include alpha, beta, gamma, and others. Alpha Stirling engines feature two distinct pistons in separate cylinders, one hot and one cold that move in opposite directions. These engines are used in applications such as heating and cooling, solar power generation, marine engines, and more. They serve various end uses, including residential, commercial, and utility applications.
The stirling engines market research report is one of a series of new reports from The Business Research Company that provides stirling engines market statistics, including stirling engines industry global market size, regional shares, competitors with a stirling engines market share, detailed stirling engines market segments, market trends and opportunities, and any further data you may need to thrive in the stirling engines industry. This stirling engines market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenario of the industry.
The stirling engines market size has grown strongly in recent years. It will grow from $1.08 billion in 2024 to $1.18 billion in 2025 at a compound annual growth rate (CAGR) of 9.2%. The growth in the historic period can be attributed to the growing utilization of combined heat and power (CHP) applications, rising demand for clean energy solutions, growing usage of the product in the military and defense sector, growing demand for renewable energy integration, and increasing government support and incentives.
The stirling engines market size is expected to see strong growth in the next few years. It will grow to $1.65 billion in 2029 at a compound annual growth rate (CAGR) of 8.9%. The growth in the forecast period can be attributed to increasing collaboration with research institutions, rising fuel costs, increased enhanced durability and longevity, rising demand for off-grid solutions, and growing global energy demand. Major trends in the forecast period include the development of hybrid piston-rotary configurations, the emergence of rotary stirling engine designs, the development of hybrid systems, investments by governments and private organizations, and the adoption of stirling engines in automotive and aerospace applications.
The growing demand for clean energy solutions is anticipated to drive the expansion of the Stirling engines market in the future. Clean energy is generated from renewable sources such as solar, wind, and hydro, which have minimal environmental impact and produce little to no greenhouse gas emissions. This increasing demand is fueled by rising environmental concerns, regulatory pressures to lower carbon emissions, and advancements in renewable energy technologies. Stirling engines contribute to clean energy by efficiently converting renewable heat sources, such as solar and biomass, into electricity, which helps to reduce waste and emissions while allowing the utilization of low-grade waste heat in sustainable energy systems. For example, in June 2023, the Energy Information Administration (EIA), a U.S. government agency, reported that renewable energy consumption in the United States rose from 12.1 quadrillion British thermal units (quads) in 2021 to a record-high 13.2 quads in 2022. Therefore, the increasing demand for clean energy solutions is propelling the growth of the Stirling engines market.
Key players in the Stirling engines market are concentrating on technological innovations, such as integrating Stirling engine technology with diesel and gas engines, to enhance system efficiency, lower operational costs, and satisfy the rising demand for dependable energy solutions. These advancements offer versatile, low-emission power generation options for both industrial and residential applications, providing sustainable energy alternatives while ensuring high performance in off-grid or backup power situations. For example, in July 2022, Sterling Generators, a machinery manufacturing company based in India, teamed up with Moteurs Baudouin, an engine manufacturing firm from France, to broaden their presence in the auxiliary power sector. This collaboration merges Baudouin's expertise in high-quality engine engineering with Sterling's innovative, fuel-efficient power solutions that comply with the latest emission standards. The partnership marks a significant stride toward meeting the growing needs of the genset industry, offering customers reliable, high-quality power solutions along with strong aftermarket support.
In April 2024, GCI Holdings LLC, a US-based renewable energy company, acquired Stirling Ultracold for an undisclosed amount. This acquisition positions GCI Holdings to continue Stirling Ultracold's innovative legacy and expand its product offerings in the life sciences sector, particularly in biobanking and clinical trials, where the need for ultra-low temperature (ULT) storage solutions is growing. Stirling Ultracold is a US-based provider of Stirling engines.
Major companies operating in the stirling engines market are NRG Energy Ltd, Yanmar Holdings Co. ltd, AMETEK Inc., Stirling Energy Systems, Azelio AB, Bosch Thermotechnology GmbH, Microgen Engine Corporation, Stirling Technology Inc., Qnergy, Infinia Corporation, Kockums Industries AB, ADI Thermal Power Corporation, Bohm Stirling Technik GmbH, Cool Energy Inc., Genoastirling S.r.l., Glen Mills Inc., Skach Manufacturing Co., Swedish Stirling Company, Whisper Tech Limited, Genesis Scientific Ltd., ECOGEN, Solo Kleinmotoren GmbH
Asia-Pacific was the largest region in the stirling engines market in 2024. The regions covered in the stirling engines market report are Asia-Pacific, Western Europe, Eastern Europe, North America, South America, Middle East, Africa.
The countries covered in the stirling engines market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Russia, South Korea, UK, USA, Canada, Italy, Spain.
The stirling engines market consists of sales of power generators, micro-CHP (combined heat and power) units, cryocoolers, solar stirling dishes, and waste heat recovery systems. Values in this market are 'factory gate' values, that is the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors, and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.
The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD, unless otherwise specified).
The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.
Stirling Engines Global Market Report 2025 from The Business Research Company provides strategists, marketers and senior management with the critical information they need to assess the market.
This report focuses on stirling engines market which is experiencing strong growth. The report gives a guide to the trends which will be shaping the market over the next ten years and beyond.
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Where is the largest and fastest growing market for stirling engines ? How does the market relate to the overall economy, demography and other similar markets? What forces will shape the market going forward? The stirling engines market global report from the Business Research Company answers all these questions and many more.
The report covers market characteristics, size and growth, segmentation, regional and country breakdowns, competitive landscape, market shares, trends and strategies for this market. It traces the market's historic and forecast market growth by geography.
The market characteristics section of the report defines and explains the market.
The market size section gives the market size ($b) covering both the historic growth of the market, and forecasting its development.
The forecasts are made after considering the major factors currently impacting the market. These include:
The forecasts are made after considering the major factors currently impacting the market. These include the Russia-Ukraine war, rising inflation, higher interest rates, and the legacy of the COVID-19 pandemic.
Market segmentations break down the market into sub markets.
The regional and country breakdowns section gives an analysis of the market in each geography and the size of the market by geography and compares their historic and forecast growth. It covers the growth trajectory of COVID-19 for all regions, key developed countries and major emerging markets.
The competitive landscape chapter gives a description of the competitive nature of the market, market shares, and a description of the leading companies. Key financial deals which have shaped the market in recent years are identified.
The trends and strategies section analyses the shape of the market as it emerges from the crisis and suggests how companies can grow as the market recovers.
Scope
Markets Covered:1) By Type: Alpha; Beta; Gamma; Other Types
2) By Application: Heating And Cooling; Solar Power Generation; Marine Engines; Other Applications
Regions: Asia-Pacific; Western Europe; Eastern Europe; North America; South America; Middle East; Africa
Time series: Five years historic and ten years forecast.
Data: Ratios of market size and growth to related markets, GDP proportions, expenditure per capita,
Data segmentations: country and regional historic and forecast data, market share of competitors, market segments.
Sourcing and Referencing: Data and analysis throughout the report is sourced using end notes.
Delivery format: PDF, Word and Excel Data Dashboard.
Table of Contents
1. Executive Summary
2. Stirling Engines Market Characteristics
3. Stirling Engines Market Trends And Strategies
4. Stirling Engines Market - Macro Economic Scenario Macro Economic Scenario Including The Impact Of Interest Rates, Inflation, Geopolitics And Covid And Recovery On The Market
5. Global Stirling Engines Growth Analysis And Strategic Analysis Framework
5.1. Global Stirling Engines PESTEL Analysis (Political, Social, Technological, Environmental and Legal Factors, Drivers and Restraints)
5.2. Analysis Of End Use Industries
5.3. Global Stirling Engines Market Growth Rate Analysis
5.4. Global Stirling Engines Historic Market Size and Growth, 2019 - 2024, Value ($ Billion)
5.5. Global Stirling Engines Forecast Market Size and Growth, 2024 - 2029, 2034F, Value ($ Billion)
5.6. Global Stirling Engines Total Addressable Market (TAM)
6. Stirling Engines Market Segmentation
6.1. Global Stirling Engines Market, Segmentation By Type, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Alpha
Beta
Gamma
Other Types
6.2. Global Stirling Engines Market, Segmentation By Application, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Heating And Cooling
Solar Power Generation
Marine Engines
Other Applications
6.3. Global Stirling Engines Market, Segmentation By End Use, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Residential
Commercial
Utility
6.4. Global Stirling Engines Market, Sub-Segmentation Of Alpha Stirling Engines, By Type, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Single-acting Alpha Engines
Double-acting Alpha Engines
Free-piston Alpha Engines
6.5. Global Stirling Engines Market, Sub-Segmentation Of Beta Stirling Engines, By Type, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Conventional Beta Engines
Low-temperature Beta Engines
High-efficiency Beta Engines
6.6. Global Stirling Engines Market, Sub-Segmentation Of Gamma Stirling Engines, By Type, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Conventional Gamma Engines
Regenerative Gamma Engines
Free-piston Gamma Engines
6.7. Global Stirling Engines Market, Sub-Segmentation Of Other Types, By Type, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
Dish Stirling Engines
Heat Pump Stirling Engines
Miniature Stirling Engines
7. Stirling Engines Market Regional And Country Analysis
7.1. Global Stirling Engines Market, Split By Region, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion
7.2. Global Stirling Engines Market, Split By Country, Historic and Forecast, 2019-2024, 2024-2029F, 2034F, $ Billion