The waste heat recovery industry focuses on capturing and reusing energy lost as heat during industrial processes, transportation, and power generation. Leveraging technologies like Organic Rankine Cycle (ORC) systems and advanced heat exchangers, these companies convert waste heat into useful energy, drastically cutting energy costs and carbon footprint. This sector is growing rapidly due to increasing energy prices and a global push for sustainability. Governments and corporations alike see waste heat recovery as vital for achieving energy efficiency and reducing greenhouse gas emissions, making it an indispensable piece of the clean energy puzzle.

The companies listed range from startups to established players, varying in size from small teams to thousands of employees. Headquartered across various regions, including the United States, Germany, and India, they specialize in technologies for waste heat recovery, efficiency optimization, and energy market solutions. Many were founded in the 21st century, highlighting the recent surge in green energy solutions. Their contributions help industries capitalize on wasted energy, significantly impacting operational costs and environmental sustainability.

Read on to explore the top waste heat recovery companies.

Top 27 Waste Heat Recovery Companies

1. Echogen Power Systems

• Website: echogen.com
• Ownership type: Venture Capital
• Headquarters: Akron, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $1.0M, July 2017
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: echogen-power-systems

Echogen Power Systems, based in Akron, Ohio, is an energy solutions provider that focuses on waste heat recovery and energy storage technologies. Founded in 2007, the company has developed innovative products like the EPS100 heat engine, which is designed to help businesses harness unused energy effectively. Echogen serves various sectors, including manufacturing, oil and gas, and renewable energy, aiming to enhance energy efficiency and reduce operational costs. The company has received a $1 million grant from the U.S. Department of Energy to further develop its solar thermal energy storage and power system, highlighting its active role in advancing energy solutions. With a team of 11-50 employees, Echogen is committed to providing engineering services and tailored solutions to meet the unique needs of its clients.

2. Clyde Bergemann Power Group

• Website: cbpg.com
• Ownership type: Private Equity
• Headquarters: Wesel, North Rhine-Westphalia, Germany
• Employee distribution: United States (USA) 20%, Germany 20%, United Kingdom (UK) 19%, Other 40%
• Latest funding: May 2005
• Founded year: 1924
• Headcount: 1001-5000
• LinkedIn: clyde-bergemann

Clyde Bergemann Power Group, founded in 1924 and based in Wesel, North Rhine-Westphalia, Germany, is a manufacturing company that specializes in energy solutions. With a workforce of approximately 458 employees, the company operates on a global scale, providing innovative products and services that enhance boiler efficiency, materials handling, and energy recovery. Their expertise is particularly notable in the power generation, waste-to-energy, biomass, oil and gas, and marine industries. Clyde Bergemann's product offerings include advanced boiler cleaning systems, materials handling systems for dry bottom ash, and sustainable energy recovery heat exchange systems. They have been involved in the design and manufacturing of waste heat recovery equipment for over 60 years, showcasing their long-standing commitment to improving energy efficiency and supporting sustainable practices in energy conversion processes.

3. Ananké

• Website: ananke.eu
• Ownership type: Private
• Headquarters: Belfort, Bourgogne-Franche-Comté, France
• Employee distribution: France 100%
• Founded year: 2017
• Headcount: 11-50
• LinkedIn: ananke-systems

Ananké, based in Belfort, Bourgogne-Franche-Comté, France, is an energy solutions provider that specializes in the recovery and valorization of industrial waste heat. Founded in 2017, the company has quickly established itself as a key player in enhancing energy efficiency across various industries, including metallurgy, chemistry, and construction. Ananké offers a comprehensive suite of services, from initial consulting and feasibility studies to the installation and maintenance of advanced technologies designed to convert waste heat into usable energy. Their flagship product, the KEOS module, exemplifies their innovative approach, enabling industries to recover high-temperature waste heat for simultaneous production of compressed air and useful heat. Ananké's commitment to helping clients reduce energy costs and improve sustainability positions it as a significant contributor to the waste heat recovery sector.

4. Qpinch

• Website: qpinch.com
• Ownership type: Venture Capital
• Headquarters: Antwerp, Flanders, Belgium
• Employee distribution: Belgium 100%
• Latest funding: Series B, $16.6M, September 2021
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: qpinch

Qpinch is an energy technology company based in Antwerp, Belgium, founded in 2012. The firm specializes in waste heat recovery solutions, primarily through its patented QHT (Qpinch Heat Transformer) technology. This technology allows for the transformation of waste heat into carbon neutral process heat, which is crucial for large-scale processing plants in various industries, including refining, petrochemical, food and beverage, and recycling. Qpinch's mission is to enhance energy efficiency and significantly reduce CO2 emissions for its clients. The company has garnered attention for its innovative approach and has received substantial venture capital funding, amounting to over 16 million euros in its latest Series B round in September 2021. This financial support underscores the potential impact of Qpinch's technology in the energy sector, particularly as industries seek to meet sustainability targets and improve operational efficiency.

5. Water Horizon

• Website: water-horizon.com
• Ownership type: Private
• Headquarters: Cugnaux, Occitanie, France
• Employee distribution: France 100%
• Latest funding: Other (Grant), $11,000, May 2024
• Founded year: 2017
• Headcount: 11-50
• LinkedIn: water-horizon

Water Horizon, founded in 2017 and based in Cugnaux, Occitanie, France, is a private company dedicated to sustainable energy solutions. With a team of around 31 employees, the firm focuses on the recovery of waste heat and the provision of renewable cooling. Their innovative technologies, particularly the mobile thermal battery, allow for the capture and storage of waste heat from industrial processes, which can then be utilized as renewable energy at different times and locations. This approach not only enhances energy efficiency but also significantly reduces carbon emissions for their clients. Water Horizon has received funding, including a grant in May 2024, which supports their ongoing projects and development in the energy transition space. Their mission is to make industrial operations cleaner and more sustainable, contributing positively to the environment and the energy landscape.

6. Econotherm (UK) Ltd

• Website: econotherm.co.uk
• Ownership type: Private
• Headquarters: Bridgend, Wales, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: econotherm-uk-ltd

Econotherm (UK) Ltd, based in Bridgend, Wales, is a manufacturer dedicated to providing heat recovery solutions for industrial applications. Founded in 2007, the company has developed a range of products, including heat pipe recuperators and steam generators, aimed at helping industries recover waste heat. This recovery process is crucial for reducing energy costs and minimizing carbon emissions. Econotherm serves various sectors, such as automotive, food processing, and more, showcasing their adaptability to different industrial needs. The company has received recognition for its innovative technology, including awards from Shell Oil and the UK Carbon Trust. Recently, Econotherm was acquired by Solex Thermal Science, a Canadian company specializing in thermal energy solutions, which may enhance their operational capabilities and market presence. Their ongoing involvement in EU-funded projects further highlights their commitment to advancing waste heat recovery technologies.

7. FirstESCO India Pvt. Ltd.

• Website: firstesco.com
• Ownership type: Private
• Headquarters: Hyderabad, Telangana, India
• Employee distribution: India 73%, United Arab Emirates 27%
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: first-esco-india-private-limited

FirstESCO India Pvt. Ltd., founded in 2007 and based in Hyderabad, Telangana, is a private energy service company that specializes in waste heat recovery and renewable energy solutions. With a team of experienced technocrats, the company focuses on helping energy-intensive industries, including steel, glass, and cement manufacturing, to recover waste heat and enhance energy efficiency. Their offerings include advanced Organic Rankine Cycle (ORC) systems, which are designed to convert low-grade waste heat into usable power. FirstESCO has successfully installed projects, such as a 2.7MW waste heat recovery ORC power plant at Pioneer Cement Industries in the UAE, showcasing their technical capabilities and commitment to sustainability. The company operates through innovative business models to deliver cost-effective energy solutions, aiming to reduce operational costs and carbon emissions for their clients.

8. Green Secure Power Systems Private Limited

• Website: greensecure.org
• Ownership type: Private
• Headquarters: Hyderabad, Telangana, India
• Employee distribution: India 100%
• Founded year: 2001
• Headcount: 51-200
• LinkedIn: green-secure-power-systems

Green Secure Power Systems Private Limited, based in Hyderabad, Telangana, India, is an energy solutions provider that specializes in waste heat recovery and power generation. Founded in 2001, the company has developed innovative technologies, particularly screw expander systems, to convert waste heat into electrical energy. This technology is crucial for industrial clients in sectors such as petrochemical, cement, and sugar, where significant amounts of heat are often wasted. Green Secure Power Systems emphasizes energy efficiency, helping clients reduce operational costs and minimize their environmental impact. The company has successfully executed projects, including a notable 2400KW waste heat recovery power plant at Keerthi Industries Limited, showcasing their expertise and commitment to advancing waste heat recovery solutions. Their partnership with Zhejiang Turbine Import & Export Company Limited further enhances their technological capabilities in this field.

9. Vyncke

• Website: vyncke.com
• Ownership type: Family Owned
• Headquarters: Harelbeke, Flanders, Belgium
• Employee distribution: Belgium 51%, Czech Republic 21%, Malaysia 10%, Other 18%
• Founded year: 1912
• Headcount: 201-500
• LinkedIn: vyncke

Vyncke NV, established in 1912, is a family-owned company based in Harelbeke, Belgium. With a workforce of approximately 398 employees, Vyncke has carved a niche in the energy sector by specializing in biomass and waste-to-energy technologies. The company designs and constructs energy plants that transform biomass and industrial waste into clean energy, catering to industries such as food processing and wood manufacturing. Vyncke's commitment to sustainability is evident in their approach to energy solutions, which are tailored to meet the specific needs of their clients. They have a global footprint, with operations in countries like the Czech Republic, Malaysia, Spain, Brazil, and China, and have successfully completed over 4,400 projects worldwide. Their expertise in combustion technology and their ability to handle various fuel types, including agricultural residues and recycled materials, positions them as a significant player in the energy solutions market.

10. Exergy ORC

• Website: exergy-orc.com
• Ownership type: Corporate
• Headquarters: Olgiate Olona, Lombardy, Italy
• Employee distribution: Italy 75%, Turkey 23%, United Kingdom (UK) 2%
• Latest funding: $17.7M, September 2019
• Founded year: 2000
• Headcount: 51-200
• LinkedIn: exergy-orc

Exergy International Srl, based in Olgiate Olona, Lombardy, Italy, is a clean energy technology firm founded in 2000. The company specializes in Organic Rankine Cycle (ORC) solutions, focusing on providing innovative energy solutions for the energy sector. Exergy's expertise lies in geothermal, biomass, and waste heat recovery technologies. They offer a range of products, including tailored ORC systems, ORC-lite, and PureCycle, aimed at improving energy efficiency and sustainability for their clients. With a workforce of approximately 86 employees, Exergy has established a significant presence in the industry, particularly in Italy and Turkey. The company has also secured funding of €17,655,000 in September 2019, indicating investor confidence in their business model and growth potential. Their commitment to R&D and customer-focused solutions positions them as a notable player in the waste heat recovery sector.

11. Ait - Stein

• Website: ait-stein.com
• Ownership type: Private
• Headquarters: Poitou-Charentes, Nouvelle-Aquitaine, France
• Employee distribution: France 100%
• Founded year: 1928
• Headcount: 51-200
• LinkedIn: ait-stein-group

Ait - Stein, based in Poitou-Charentes, Nouvelle-Aquitaine, France, is a private energy solutions provider founded in 1928. The company specializes in energy optimization and valorization, offering a range of products and services that include energy recovery systems, waste treatment solutions, and industrial boilers. Ait - Stein primarily serves the industrial sector, helping clients enhance energy efficiency and minimize environmental impact through innovative technologies. With over 35,000 solutions installed in 120 countries, Ait - Stein has established itself as a significant player in the European market for energy recovery and waste heat valorization. Their commitment to reducing carbon emissions and improving energy efficiency is evident in their comprehensive approach to energy management, which includes the treatment of flue gases and the valorization of waste. Ait - Stein's expertise in these areas positions them as a valuable partner for industries looking to optimize their energy processes and reduce their carbon footprint.

12. GreensTEi

• Website: thegreensgroup.co.uk
• Ownership type: Corporate
• Headquarters: Wakefield, England, United Kingdom (UK)
• Employee distribution: India 79%, Singapore 15%, Brazil 6%
• Latest funding: August 2024
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: greens-power-equipment-pte-ltd

GreensTEi, based in Wakefield, England, is a thermodynamic solutions provider that specializes in waste heat recovery and energy efficiency. Founded in 2009, the company has built a reputation for delivering innovative products such as boilers and heat exchangers. Their primary clientele includes industries like oil and gas, petrochemicals, and power generation. GreensTEi emphasizes engineering design and project management to enhance operational efficiency while minimizing environmental impact. The company is a subsidiary of the TEi Group, which acquired it in 2023, further solidifying its position in the market. With a global presence and a commitment to sustainability, GreensTEi continues to develop advanced technologies that contribute to energy conservation and reduced emissions.

13. CiTECH Energy Recovery Systems Ltd

• Website: citech.co.uk
• Ownership type: Private
• Headquarters: Hessle, England, United Kingdom (UK)
• Founded year: 2006
• Headcount: 51-200
• LinkedIn: citech-energy-recovery-systems-ltd

CiTECH Energy Recovery Systems Ltd, based in Hessle, England, is a private company founded in 2006. With a workforce of around 28 employees, CiTECH specializes in energy efficiency solutions, particularly in the area of waste heat recovery technologies. The company offers a range of products and services, including engineering design, installation, and training, primarily targeting clients in the offshore oil and gas and onshore power generation industries. Their innovative Waste Heat Recovery Units (WHRUs) are designed to operate effectively in harsh environments, helping clients reduce carbon emissions and enhance energy efficiency. CiTECH has successfully completed hundreds of projects, showcasing their expertise and commitment to delivering effective energy solutions. Their focus on training and customer support further underscores their dedication to ensuring optimal performance of their systems throughout their lifecycle.

14. Caligo Industria Oy

• Website: caligoindustria.com
• Ownership type: Private
• Headquarters: Turku, Southwest Finland, Finland
• Employee distribution: Finland 100%
• Founded year: 2013
• Headcount: 11-50
• LinkedIn: caligo-industria

Caligo Industria Oy, founded in 2013 and based in Turku, Finland, is a private company that specializes in industrial solutions with a focus on heat recovery and condensate treatment technologies. The company offers patented systems aimed at flue gas cleaning and enhancing energy efficiency, primarily serving energy producers and industrial clients. Their solutions are designed to help customers minimize emissions and optimize energy utilization, contributing to sustainability in the energy sector. Caligo's innovative technologies, such as their flue gas scrubbers and heat pump systems, allow for significant energy recovery and reduced fuel consumption. This positions them as a notable player in the waste heat recovery industry, where their expertise and technology can lead to substantial environmental benefits.

15. Zuccato Energia Srl

• Website: zuccatoenergia.it
• Ownership type: Private
• Headquarters: Avesa, Italy
• Employee distribution: Italy 88%, Germany 12%
• Founded year: 2006
• Headcount: 11-50
• LinkedIn: zuccato-energia

Zuccato Energia Srl, founded in 2006 and based in Avesa, Italy, is an energy solutions provider that specializes in the design and manufacture of Organic Rankine Cycle (ORC) systems. These systems are engineered to convert waste heat from industrial processes, engines, and renewable sources into clean electricity. With a workforce of 11 to 50 employees, the company primarily serves industrial clients seeking to improve energy efficiency and reduce costs. Zuccato Energia offers tailored energy solutions, including consulting services to optimize energy use. Their product range includes various ORC systems and turbo expanders, which are designed to operate efficiently even at low temperatures. The company has established a presence in both Italy and Germany, reflecting its operational reach in the European market. Their focus on high-efficiency systems and commitment to reducing environmental impact through clean energy production positions them as a relevant player in the waste heat recovery industry.

16. ThermTech

• Website: thermtech.co.uk
• Ownership type: Private
• Headquarters: Manchester, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 79%, United States (USA) 21%
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: therm-tech

ThermTech, based in Manchester, UK, is an energy solutions provider that specializes in the design, manufacture, and installation of waste heat recovery systems and gas cooling solutions. Founded in 2007, the company has built a reputation for its bespoke solutions tailored to meet the specific needs of its clients. ThermTech operates primarily in the chemical and manufacturing sectors, helping businesses enhance energy efficiency and reduce operational costs. Their product offerings include boiler economisers, heat exchangers, and pollution control systems, among others. The company prides itself on its engineering and technical expertise, which is evident in their comprehensive service that includes site energy efficiency surveys and in-house manufacturing capabilities. With a workforce skilled in various technical disciplines, ThermTech is well-equipped to address the energy challenges faced by its clients, contributing to improved sustainability and cost savings.

17. Eco Waste Solutions

• Website: ecosolutions.com
• Ownership type: Private
• Headquarters: Batavia, New York, United States (USA)
• Employee distribution: Canada 68%, United States (USA) 32%
• Founded year: 1993
• Headcount: 11-50
• LinkedIn: eco-waste-solutions

Eco Waste Solutions, founded in 1993 and based in Batavia, New York, is a private waste management company that specializes in modular thermal treatment and waste-to-energy technology. With a workforce of around 19 employees, the company has established itself as a significant player in the waste management sector, particularly for small to medium-sized waste challenges. Eco Waste Solutions provides tailored solutions for communities, military organizations, and natural resource companies, focusing on effective waste management and energy recovery. Their patented thermal treatment processes have been recognized for reducing waste volume by over 96%, while also minimizing environmental impact. The company has successfully completed projects in various challenging environments, including remote locations, and has garnered a reputation for its innovative, scalable, and environmentally responsible waste management systems. Eco Waste Solutions has also expanded its capabilities through the acquisition of Enercon Systems, enhancing its portfolio of waste-to-energy solutions. Their technology is designed to meet or exceed stringent environmental standards, making them a viable option for clients seeking sustainable waste management solutions.

18. Entent

• Website: entent.fr
• Ownership type: Corporate
• Headquarters: Aix-En-Provence, Provence-Alpes-Côte D'Azur, France
• Employee distribution: France 100%
• Latest funding: Other (Angel), $160,000, October 2021
• Founded year: 2018
• Headcount: 1-10
• LinkedIn: entent

Entent is an energy technology company based in Aix-En-Provence, France, founded in 2018. The company focuses on converting low-temperature waste heat into electricity using its innovative PULSE technology. This technology allows for the recovery of waste heat from sources ranging from 60°C to 150°C, making it particularly valuable for industrial clients aiming to improve energy efficiency and lower carbon emissions. Entent's mission centers on contributing to sustainable energy solutions and supporting industries in their decarbonization efforts. The company has received funding, including a notable angel investment in 2021, which underscores its growth potential and commitment to innovation in the energy sector.

19. SON Srl

• Website: son-energy.com
• Ownership type: Private
• Headquarters: Legnano, Lombardy, Italy
• Employee distribution: Italy 100%
• Founded year: 2004
• Headcount: 11-50
• LinkedIn: son-srl

SON Srl, based in Legnano, Lombardy, Italy, is a private company founded in 2004. It specializes in energy efficiency solutions tailored for industrial applications. The company offers a range of products, including fired boilers, biomass boilers, and notably, waste heat recovery units. SON Srl's expertise stems from its origins in CCT SpA, a prominent player in boiler manufacturing, which has equipped them with over 30 years of experience in steam generation and heat recovery. Their clientele primarily includes businesses in power generation and chemical processing, where they aim to enhance operational efficiency and minimize emissions. SON Srl is dedicated to providing customized engineering services, ensuring that each project meets the specific needs of their clients. Their commitment to innovation and sustainability positions them as a reliable partner for industries looking to optimize energy use and reduce environmental impact.

20. Hafslund Oslo Celsio

• Website: celsio.no
• Ownership type: Private Equity
• Headquarters: Oslo, Oslo, Norway
• Employee distribution: Norway 100%
• Latest funding: January 2022
• Founded year: 2017
• Headcount: 51-200
• LinkedIn: hafslund-oslo-celsio

Hafslund Oslo Celsio, founded in 2017, is a private equity-owned energy company based in Oslo, Norway. With a workforce of approximately 134 employees, the company specializes in providing district heating and cooling services, waste incineration, and carbon capture solutions. They serve a wide range of customers, including residential, commercial, and organizational clients. Hafslund Oslo Celsio operates Norway's largest district heating network and waste incineration facility, focusing on harnessing renewable energy sources to produce thermal energy. Their operations are integral to Oslo's circular economy, as they utilize local surplus energy that would otherwise go to waste. This approach not only helps in reducing carbon emissions but also alleviates pressure on the electrical grid, making them a key player in the energy transition towards sustainability.

21. Eastern

• Website: recuperators.in
• Ownership type: Private
• Headquarters: Kolkata, West Bengal, India
• Employee distribution: India 100%
• Founded year: 1980
• Headcount: 201-500
• LinkedIn: eastern-equipment-engineers-p-ltd

Eastern Recuperators, based in Kolkata, West Bengal, India, is a private engineering firm founded in 1980. The company specializes in the design, engineering, and manufacture of waste heat recovery equipment, including recuperators, air preheaters, and gas coolers. With a workforce of approximately 54 employees, Eastern has built a strong presence in industries such as re-rolling, forging, ceramics, and aluminum processing. Their innovative solutions aim to improve energy efficiency and significantly reduce fuel consumption, with claims of achieving up to 45% fuel savings for their clients. Eastern's commitment to quality is reflected in their ISO 9001 and ISO 45001 certifications, as well as their CE certification, which ensures compliance with European safety standards. The company has a global footprint, with more than 4,500 successful installations, showcasing their capability and experience in the waste heat recovery sector.

22. Gasco Pty Ltd

• Website: gasco.net.au
• Ownership type: Private
• Headquarters: Bayswater, Victoria, Australia
• Employee distribution: Australia 95%, Tanzania 5%
• Founded year: 1991
• Headcount: 51-200
• LinkedIn: gasco-pty-ltd

Gasco Pty Ltd, based in Bayswater, Victoria, Australia, is a manufacturing and engineering firm established in 1991. The company specializes in heat transfer and combustion products, providing a wide array of solutions tailored for industries such as oil and gas, power generation, and manufacturing. Their product line includes heaters, thermal oxidizers, and pollution control systems, with a notable emphasis on waste heat recovery systems. These systems are designed to harness existing energy sources, thereby generating thermal energy, process heat, or electricity efficiently. Gasco is dedicated to delivering high-quality products and services, ensuring compliance with safety and environmental standards. Their global reach is evident, as they serve clients across various sectors, contributing to energy efficiency and sustainability initiatives.

23. Transparent Energy Systems Private Limited

• Website: tespl.com
• Ownership type: Private
• Headquarters: Pune, Maharashtra, India
• Employee distribution: India 100%
• Founded year: 1986
• Headcount: 51-200
• LinkedIn: transparent-energy-systems-pvt--ltd--pune

Transparent Energy Systems Private Limited (TESPL), based in Pune, Maharashtra, India, has been operational since 1986. The company specializes in energy solutions with a particular emphasis on waste heat recovery and cogeneration systems. TESPL offers a range of products, including steam boilers and thermal oil heaters, designed to optimize energy efficiency for industries such as cement and steel. Their commitment to reducing energy costs and enhancing sustainability is evident in their extensive portfolio of over 120 successful installations of waste heat recovery systems. TESPL's innovative technologies and patented solutions position them as a significant player in the energy sector, particularly in the waste heat recovery niche. The company is recognized for its contributions to clean energy initiatives and has received multiple national and international awards for its efforts in promoting energy efficiency and climate change mitigation.

24. Kalfrisa S.A.U.

• Website: kalfrisa.com
• Ownership type: Private
• Headquarters: Mexico
• Employee distribution: Spain 89%, Colombia 2%, United States (USA) 2%, Other 7%
• Founded year: 1965
• Headcount: 51-200
• LinkedIn: kalfrisa

Kalfrisa S.A.U., founded in 1965, is a private company based in Mexico that specializes in energy solutions and environmental services. With a workforce of approximately 90 employees, the company serves primarily industrial and agricultural sectors. Kalfrisa offers a range of products and services aimed at enhancing energy efficiency and ensuring compliance with environmental regulations. Their portfolio includes energy recovery systems, such as recuperators and heat exchangers, which are essential for capturing and reusing waste heat. Additionally, they provide waste management and emission control solutions, showcasing their commitment to sustainable practices. The company operates internationally, with a significant presence in Spain and other countries, and has completed over 1,500 projects globally. Kalfrisa's focus on innovation and technology positions it as a relevant player in the energy recovery and environmental services market.

25. Turboden S.p.A.

• Website: turboden.com
• Ownership type: Corporate
• Headquarters: Brescia, Lombardy, Italy
• Employee distribution: Italy 87%, Turkey 12%, Other 1%
• Latest funding: July 2009
• Founded year: 1980
• Headcount: 201-500
• LinkedIn: turboden-spa

Turboden S.p.A., founded in 1980 and based in Brescia, Italy, is an energy technology company that specializes in clean energy solutions. The firm designs and manufactures Organic Rankine Cycle (ORC) systems, large heat pumps, and gas expanders. These technologies are aimed at improving energy efficiency and minimizing carbon emissions for industrial clients. Turboden's systems are particularly effective in recovering waste heat from industrial processes, waste incinerators, and engines, making them a key player in the waste heat recovery sector. The company serves various industries, including oil and gas, manufacturing, and renewable energy, and is actively involved in the transition to sustainable energy practices. With a workforce of around 350 employees, Turboden is committed to innovation and has a strong focus on research and development to enhance its offerings.

26. Christof Industries

• Website: christof.com
• Ownership type: Family Owned
• Headquarters: Graz, Styria, Austria
• Employee distribution: Austria 83%, Romania 7%, United Kingdom (UK) 3%, Other 7%
• Founded year: 1966
• Headcount: 1001-5000
• LinkedIn: christofindustries

Christof Industries, founded in 1966 and based in Graz, Austria, is a family-owned industrial services company with a workforce of around 350 employees. The company operates globally, providing engineering and manufacturing solutions tailored to various sectors, including energy, waste management, and manufacturing. Christof Industries is particularly noted for its innovative process solutions that help businesses optimize their operations and manage waste effectively. Their portfolio includes technologies related to waste-to-energy systems, which are essential for converting waste into usable energy, thus playing a significant role in waste heat recovery. The company has successfully executed over 4,500 projects worldwide, showcasing its extensive experience in project execution and commitment to sustainability. Christof Industries integrates sustainability into its business model, aligning its strategic goals with the United Nations' sustainable development objectives, further emphasizing its relevance in the waste heat recovery industry.

27. BPOWER, a.s.

• Website: bpower.cz
• Ownership type: Corporate
• Headquarters: Czech Republic
• Employee distribution: Czech Republic 100%
• Latest funding: November 2023
• Founded year: 2009
• Headcount: 11-50
• LinkedIn: b-power-investment-a-s-

BPOWER, a.s. is an engineering firm based in the Czech Republic, established in 2009. The company specializes in energy solutions, with a strong emphasis on modern technologies for electricity and heat production. BPOWER focuses particularly on waste heat recovery and biomass utilization, catering to industrial clients seeking efficient energy solutions. Their portfolio includes advanced systems that convert waste heat into usable energy, showcasing their commitment to enhancing energy efficiency. BPOWER operates primarily in the energy sector, providing customized engineering services and innovative technologies. They have developed a reputation for their expertise in ORC systems, which are crucial for effective waste heat recovery. The company has serviced over 200 power plants across Europe, indicating a significant presence in the market and a solid track record in implementing energy solutions.

Waste Heat Recovery Insights: Key Companies

Company	Headquarter	Size	Founded	Ownership
Echogen Power Systems	Akron, Ohio, United States (USA)	11-50	2007	Venture Capital
Clyde Bergemann Power Group	Wesel, North Rhine-Westphalia, Germany	1001-5000	1924	Private Equity
Ananké	Belfort, Bourgogne-Franche-Comté, France	11-50	2017	Private
Qpinch	Antwerp, Flanders, Belgium	11-50	2012	Venture Capital
Water Horizon	Cugnaux, Occitanie, France	11-50	2017	Private
Econotherm (UK) Ltd	Bridgend, Wales, United Kingdom (UK)	11-50	2007	Private
FirstESCO India Pvt. Ltd.	Hyderabad, Telangana, India	11-50	2007	Private
Green Secure Power Systems Private Limited	Hyderabad, Telangana, India	51-200	2001	Private
Vyncke	Harelbeke, Flanders, Belgium	201-500	1912	Family Owned
Exergy ORC	Olgiate Olona, Lombardy, Italy	51-200	2000	Corporate
Ait - Stein	Poitou-Charentes, Nouvelle-Aquitaine, France	51-200	1928	Private
GreensTEi	Wakefield, England, United Kingdom (UK)	11-50	2009	Corporate
CiTECH Energy Recovery Systems Ltd	Hessle, England, United Kingdom (UK)	51-200	2006	Private
Caligo Industria Oy	Turku, Southwest Finland, Finland	11-50	2013	Private
Zuccato Energia Srl	Avesa, Italy	11-50	2006	Private
ThermTech	Manchester, England, United Kingdom (UK)	11-50	2007	Private
Eco Waste Solutions	Batavia, New York, United States (USA)	11-50	1993	Private
Entent	Aix-En-Provence, Provence-Alpes-Côte D'Azur, France	1-10	2018	Corporate
SON Srl	Legnano, Lombardy, Italy	11-50	2004	Private
Hafslund Oslo Celsio	Oslo, Oslo, Norway	51-200	2017	Private Equity
Eastern	Kolkata, West Bengal, India	201-500	1980	Private
Gasco Pty Ltd	Bayswater, Victoria, Australia	51-200	1991	Private
Transparent Energy Systems Private Limited	Pune, Maharashtra, India	51-200	1986	Private
Kalfrisa S.A.U.	Mexico	51-200	1965	Private
Turboden S.p.A.	Brescia, Lombardy, Italy	201-500	1980	Corporate
Christof Industries	Graz, Styria, Austria	1001-5000	1966	Family Owned
BPOWER, a.s.	Czech Republic	11-50	2009	Corporate

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