The waste gasification industry focuses on converting waste materials into energy, reducing landfill use and harmful emissions. Companies in this sector employ advanced technologies, such as gasification, to transform various waste types—ranging from municipal solid waste to biomass—into clean fuels or chemicals. With increasing global emphasis on sustainability and circular economies, the industry is experiencing growth. Investors are interested in innovative solutions that address waste management challenges. Enhanced environmental regulations and shifts toward greener energy sources are driving many companies to focus on improved efficiency and technology adoption as they contribute towards meeting energy needs sustainably.

The companies listed here vary significantly in size and expertise. Ranging from small startups like Sierra Energy with fewer than 10 employees, to larger operations such as Polytechnik, employing about 240 individuals. These firms showcase an international footprint across several countries, including the USA, India, and Canada. Founded from as far back as 1946 and as recently as 2019, they specialize in converting waste into energy through cutting-edge methods such as plasma gasification and thermochemical processes. These companies aim to address waste management while creating sustainable energy options.

Continue reading to explore the top waste gasification companies.

Top 22 Waste Gasification Companies

1. Sierra Energy

• Website: sierraenergy.com
• Ownership type: Venture Capital
• Headquarters: Davis, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Series A, $33.0M, July 2019
• Founded year: 2004
• Headcount: 1-10
• LinkedIn: sierra-energy

Sierra Energy, founded in 2004 and based in Davis, California, is a waste management company that focuses on innovative waste-to-energy solutions through its FastOx gasification technology. This technology allows for the conversion of various waste types, including municipal solid waste, biomass, and hazardous materials, into clean energy such as electricity and fuels. Sierra Energy's operations are designed to minimize environmental impact while enhancing energy security, particularly for military and government clients. The company has developed a commercial-scale demonstration facility at Fort Hunter Liggett in California, showcasing the effectiveness of their gasification system. They have received substantial funding, including a $33 million Series A round in 2019, which underscores their potential in the industry. Sierra Energy is committed to advancing its technology and contributing to a zero-waste future, making it a notable player in the waste gasification sector.

2. Ankur Scientific Energy Technologies Pvt Ltd

• Website: ankurscientific.com
• Ownership type: Private
• Headquarters: Vadodara, Gujarat, India
• Employee distribution: India 98%, Bangladesh 2%
• Founded year: 1986
• Headcount: 51-200
• LinkedIn: ankur-scientific-energy-technologies-pvt-ltd

Ankur Scientific Energy Technologies Pvt Ltd, based in Vadodara, Gujarat, India, specializes in waste-to-energy solutions, particularly through advanced gasification technology. Established in 1986, the company has developed a strong portfolio in converting various waste materials into energy, catering to clients in the waste management and energy sectors. Ankur Scientific's offerings include gasifiers designed for a range of feedstocks such as municipal solid waste, poultry litter, and agricultural residues. The company prides itself on its research and development capabilities, having executed over 1000 projects across more than 35 countries. Ankur Scientific is also recognized for its engineering solutions and thermal process equipment, which further solidifies its position in the waste gasification industry. The company holds several patents and has received multiple awards for its technological innovations and business execution.

3. GIDARA Energy

• Website: gidara-energy.com
• Ownership type: Private
• Headquarters: Schiphol, North Holland, Netherlands
• Employee distribution: Netherlands 92%, United States (USA) 6%, Other 2%
• Founded year: 2019
• Headcount: 51-200
• LinkedIn: gidara-energy

GIDARA Energy, based in Schiphol, North Holland, is an energy technology company that specializes in sustainable waste management solutions. Founded in 2019, the company has quickly established itself in the waste gasification industry with its patented HTW® (High-Temperature Winkler) gasification technology. This technology allows GIDARA Energy to convert a wide range of waste feedstocks into sustainable fuels and circular chemicals, catering primarily to clients in the energy and chemical sectors. The company emphasizes its role in enhancing sustainability and meeting regulatory requirements for waste management. GIDARA Energy's projects, such as the Advanced Methanol Amsterdam, showcase its commitment to creating integrated, green solutions that contribute to a circular economy. With a team of 51-200 employees, GIDARA Energy is actively working to address the pressing issues of waste and energy, positioning itself as a key player in the transition towards more sustainable practices.

4. Plasco Conversion Technologies

• Website: plascoenergy.com
• Ownership type: Private
• Headquarters: Ottawa, Ontario, Canada
• Founded year: 2005
• Headcount: 11-50
• LinkedIn: plasco-energy-group

Plasco Conversion Technologies, also known as OMNI Conversion Technologies, is a Canadian company based in Ottawa, Ontario, founded in 2005. The firm specializes in waste management and the production of clean fuels through innovative technologies. Their flagship product, the Omni200 system, is designed to convert a wide range of waste materials—including municipal solid waste, plastics, and food scraps—into valuable clean fuels like hydrogen and renewable natural gas. This process not only helps mitigate the environmental impact of waste disposal but also supports the transition to sustainable energy practices. OMNI has established itself as a player in the waste-to-energy sector, actively engaging with municipalities and project developers to implement its solutions. The company has been involved in various projects globally, showcasing its technology's scalability and effectiveness in addressing waste management and energy production challenges.

5. InEnTec Inc.

• Website: inentec.com
• Ownership type: Private
• Headquarters: Richland, Washington, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $26.2M, April 2012
• Founded year: 1995
• Headcount: 11-50
• LinkedIn: inentec-inc

InEnTec Inc., based in Richland, Washington, is a private company founded in 1995 that specializes in waste management and energy solutions. The company is recognized for its innovative Plasma Enhanced Melter (PEM) technology, which effectively converts a wide array of waste materials into clean energy and valuable products. InEnTec's PEM technology is designed to process municipal solid waste, industrial by-products, and even hazardous materials, transforming them into ultra-clean fuels and syngas. This process not only helps in waste reduction but also supports sustainability by recycling hard-to-recycle plastics and other materials. Over the years, InEnTec has successfully deployed 11 PEM facilities globally, showcasing its operational capabilities and commitment to addressing waste challenges. The company has also received $26.25 million in funding, reflecting strong investor interest in its technology and potential for growth. InEnTec's mission is to disrupt the traditional waste economy by promoting a circular economy and reducing reliance on virgin materials, making it a significant player in the waste gasification industry.

6. DP CleanTech Co. Ltd

• Website: dpcleantech.com
• Ownership type: Private
• Headquarters: Katowice, Silesian Voivodeship, Poland
• Employee distribution: Poland 47%, China 22%, United Kingdom (UK) 11%, Other 19%
• Founded year: 2004
• Headcount: 51-200
• LinkedIn: dp-cleantech-co-ltd

DP CleanTech Co. Ltd, founded in 2004 and based in Katowice, Poland, is a private company that operates in the waste management and renewable energy sectors. With a workforce of approximately 97 employees, the company focuses on converting waste into energy through innovative technologies. DP CleanTech provides solutions for municipalities and industries, addressing waste treatment, emissions management, and offering consultancy services. Their technological capabilities include combustion technologies, biogas systems, and notably, gasification technology through their Energos system. The company has established a presence in various regions, including Poland, China, and the UK, and emphasizes sustainable practices in waste management. Their portfolio includes projects that span the entire waste cycle, showcasing their commitment to creating value from waste.

7. Enerkem

• Website: enerkem.com
• Ownership type: Private Equity
• Headquarters: Montreal, Quebec, Canada
• Employee distribution: Canada 92%, United Kingdom (UK) 3%, Spain 2%, Other 3%
• Latest funding: $79.6M, April 2022
• Founded year: 2000
• Headcount: 51-200
• LinkedIn: enerkem

Enerkem, founded in 2000 and based in Montreal, Quebec, is a clean technology company that specializes in converting waste into sustainable biofuels and renewable chemicals. With a workforce of approximately 197 employees, Enerkem operates on a global scale, focusing on innovative solutions that help industries like marine transportation and aviation reduce carbon emissions. The company employs a patented gasification technology that processes a wide range of waste materials, transforming them into syngas, which is then converted into biofuels and circular chemicals. Enerkem's notable projects include the Varennes Carbon Recycling facility, which is set to produce 125 million liters of bio and circular methanol annually, and the Enerkem Alberta Biofuels plant, recognized as the world's first commercial-scale biorefinery of its kind. In April 2022, Enerkem secured significant funding, further supporting its mission to drive sustainability and energy transition through advanced waste-to-fuel technologies.

8. KEW Technology

• Website: kew-tech.com
• Ownership type: Private
• Headquarters: Birmingham, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Latest funding: Other (Grant), $5.6M, July 2023
• Founded year: 2016
• Headcount: 51-200
• LinkedIn: kew-tech

KEW Technology, founded in 2016 and based in Birmingham, UK, is a private company dedicated to sustainable energy solutions. The firm specializes in waste-to-energy technologies, focusing on converting waste and low-grade biomass into renewable fuels like hydrogen and rDME. Their proprietary advanced gasification technology is designed to help clients reduce greenhouse gas emissions while securing fixed energy costs, thus supporting the transition to a low-carbon economy. KEW Technology operates a commercial-scale plant at their Sustainable Energy Centre, where they have successfully implemented their gasification processes. The company has also received significant funding, including a grant of over £5.5 million in July 2023, to further develop their innovative technologies and projects. Their commitment to addressing the energy trilemma—affordability, security, and sustainability—positions them as a notable player in the waste gasification industry.

9. Leroux & Lotz Technologies (LLT)

• Website: lerouxlotz.com
• Ownership type: Private
• Headquarters: Nantes, Pays De La Loire, France
• Employee distribution: France 98%, Other 2%
• Founded year: 1946
• Headcount: 51-200
• LinkedIn: leroux-et-lotz-technologies-llt-

Leroux & Lotz Technologies (LLT), founded in 1946 and based in Nantes, France, is a private energy solutions provider with a workforce of approximately 132 employees. The company focuses on waste treatment and renewable energy production, offering services that enhance energy performance while minimizing environmental impact. LLT has developed its own combustion and gasification technologies, which are tailored for the valorization of local and renewable energy sources, including biomass and waste. Their portfolio includes both new projects and upgrades to existing facilities, showcasing their ability to adapt to evolving energy needs. LLT has been involved in significant projects, such as the first CSR valorization boiler in France and various gasification initiatives that contribute to reducing carbon emissions. Their commitment to research and development ensures they remain at the forefront of innovation in the energy sector.

10. OMNI Conversion Technologies

• Website: omnict.com
• Ownership type: Private Equity
• Headquarters: Ottawa, Ontario, Canada
• Employee distribution: Canada 75%, Spain 15%, United States (USA) 10%
• Latest funding: $142.6M, March 2011
• Founded year: 2015
• Headcount: 11-50
• LinkedIn: omni-conversion-technologies

OMNI Conversion Technologies Inc. is a Canadian company based in Ottawa, Ontario, founded in 2015. It operates in the waste management and clean energy sectors, focusing on converting various types of waste into clean fuels using its proprietary Omni200 technology. This innovative system processes a wide range of feedstock, including municipal solid waste, plastics, and food scraps, transforming them into valuable clean fuels like hydrogen and renewable natural gas. OMNI's technology is designed to minimize harmful emissions and support a circular economy by reclaiming materials for recycling and producing energy from waste. The company has established partnerships with municipalities and organizations globally, aiming to reduce landfill waste and greenhouse gas emissions. OMNI has also received significant funding, amounting to over $142 million, which underscores its potential for growth and impact in the industry.

11. Frontline BioEnergy LLC

• Website: frontlinebioenergy.com
• Ownership type: Private
• Headquarters: Nevada, Iowa, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $4.5M, August 2022
• Founded year: 2005
• Headcount: 11-50
• LinkedIn: frontline-bioenergy-llc

Frontline BioEnergy LLC, based in Nevada, Iowa, is a private renewable energy company that has been operational since 2005. The firm specializes in gasification solutions aimed at transforming biomass and waste into renewable energy and fuels. With a team of experienced engineers, Frontline provides comprehensive engineering services, from feasibility studies to detailed project designs. Their proprietary gasification technologies, including advanced fluidized bed designs, are tailored to produce clean, tar-free syngas suitable for various applications, including renewable fuels and chemicals. The company has been involved in significant projects, such as the development of one of North America's largest biomass gasifiers and the San Joaquin Renewables project, which aims to convert agricultural waste into renewable natural gas. In 2022, Frontline secured $4.5 million in funding, underscoring their active role in the renewable energy sector and their commitment to advancing gasification technologies.

12. CoGen

• Website: cogenuk.com
• Ownership type: Corporate
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Latest funding: April 2022
• Founded year: 2014
• Headcount: 11-50
• LinkedIn: cogenuk

CoGen Limited, founded in 2014 and based in London, is an energy recovery company focused on waste management and renewable energy production. The company specializes in developing advanced facilities that convert residual waste into low carbon energy, addressing significant environmental challenges related to waste disposal. CoGen operates several gasification facilities across the UK, including the Hooton Bio Power facility, which utilizes fluidized bed technology and processes up to 270,000 tonnes of municipal solid waste annually. Their projects are designed to divert waste from landfills and reduce waste exports, contributing to local waste management solutions. CoGen employs an in-house team with extensive experience in the project lifecycle, from site identification to construction and operations. Their commitment to using best available technology ensures that their facilities meet high environmental standards and are efficient in energy recovery.

13. TreaTech

• Website: trea-tech.com
• Ownership type: Venture Capital
• Headquarters: Lonay, Vaud, Switzerland
• Employee distribution: Switzerland 90%, India 10%
• Latest funding: February 2024
• Founded year: 2015
• Headcount: 11-50
• LinkedIn: treatech

TreaTech, founded in 2015 and based in Lonay, Vaud, Switzerland, is a waste treatment company that focuses on innovative technologies for converting various waste streams into renewable gas, clean water, and minerals. The company was established by a team of life sciences and chemical engineers from the Swiss Federal Institute of Technology in Lausanne. TreaTech's patented catalytic hydrothermal gasification technology is designed to treat a wide range of waste, including industrial, agricultural, and municipal outputs. Their operations are geared towards supporting the circular economy, helping industries reduce their carbon footprint, and contributing to climate change mitigation. TreaTech has garnered attention in the industry, recently closing a Series A funding round to expand its technology across multiple markets. Their commitment to sustainability is evident in their partnerships with notable clients and participation in various innovation programs.

14. Plagazi

• Website: plagazi.com
• Ownership type: Venture Capital
• Headquarters: Sweden
• Latest funding: Other (Grant), $31.9M, October 2024
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: plagazi-green-hydrogren-producer-from-waste

Plagazi AB is a Swedish renewable energy company founded in 2007, dedicated to transforming non-recyclable waste into circular hydrogen through an innovative plasma gasification process. With a team of 22 employees, Plagazi designs and constructs plasma gasification plants, offering sustainable energy solutions primarily to industrial clients. Their patented process is energy self-sufficient and environmentally friendly, producing high-purity hydrogen while minimizing harmful byproducts. Plagazi's commitment to a circular economy is evident in their approach to waste management, as they handle various types of waste, including plastics and hazardous materials, converting them into valuable energy resources. The company has recently secured funding, which underscores its active role in the industry and its potential for future growth.

15. Phoenix Energy

• Website: phoenixenergy.net
• Ownership type: Private
• Headquarters: Walnut Creek, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2011
• Headcount: 1-10
• LinkedIn: phoenix-energy-1

Phoenix Energy, founded in 2011 and based in Walnut Creek, California, is an environmental services company dedicated to carbon removal and renewable energy generation. The firm specializes in converting waste biomass into biochar and renewable energy, catering to utility companies, farmers, and municipalities. Their mission is to mitigate greenhouse gas emissions by transforming waste materials that would otherwise contribute to environmental degradation. Phoenix Energy is currently developing a network of community-scale carbon removal plants, with plans to build 50 facilities over the next decade. These plants are strategically located at the source of waste to minimize transportation impacts. Their projects, such as the North Fork Community Power Plant, aim to generate renewable energy while also addressing local environmental challenges, such as wildfire risks. The company emphasizes a carbon-negative conversion process that avoids combustion, ensuring that CO2 does not enter the atmosphere during energy generation. This innovative approach positions Phoenix Energy as a relevant player in the waste gasification industry.

16. Millenium Technologies a.s.

• Website: millenium-technologies.cz
• Ownership type: Private
• Headquarters: Prague, Prague, Czech Republic
• Employee distribution: Czech Republic 73%, Costa Rica 27%
• Founded year: 1999
• Headcount: 11-50
• LinkedIn: millenium-technologies-a.s.

Millenium Technologies a.s., founded in 1999 and based in Prague, Czech Republic, is a private company focused on waste management and energy solutions. The firm specializes in plasma gasification technology, which allows for the efficient conversion of various types of waste into synthetic gas, a valuable resource for energy production. Catering to both municipalities and industrial clients, Millenium Technologies aims to tackle the environmental challenges posed by waste disposal. The company is also involved in research and development, continuously working to enhance plasma technology. In 2018, they opened the Vědecko-technický park in Dubá, a unique institute dedicated to advancing plasma gasification methods and fostering collaboration between academic institutions and commercial enterprises. This initiative underscores their commitment to innovation and environmental sustainability in waste management.

17. ALL Power Labs

• Website: allpowerlabs.com
• Ownership type: Private
• Headquarters: Berkeley, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $225,000, August 2016
• Founded year: 2008
• Headcount: 11-50
• LinkedIn: all-power-labs

ALL Power Labs, founded in 2008 and based in Berkeley, California, is an environmental technology company that specializes in biomass gasification and biochar production. The company develops innovative solutions aimed at carbon management and sustainable agriculture, targeting a range of customers including farmers, research institutions, and project developers. Their products, such as the Power Pallet and CharTainer, facilitate the conversion of biomass waste into energy and biochar, contributing to climate change mitigation and enhancing soil health. ALL Power Labs has received funding, including a grant of $225,000 in 2016, which supports their ongoing projects and technological advancements. The company is actively involved in various initiatives, including local carbon networks and international projects, showcasing their commitment to addressing waste management and energy challenges on a global scale.

18. VistaGreen Builders Inc.

• Website: vistagreen.net
• Ownership type: Private
• Headquarters: Mandaluyong, Metro Manila, Philippines
• Employee distribution: Philippines 100%
• Founded year: 2010
• Headcount: 51-200
• LinkedIn: vistagreen-builders-inc-

VistaGreen Builders Inc., based in Mandaluyong, Metro Manila, Philippines, is a private company founded in 2010. It operates as a construction and waste management firm, specializing in waste-to-energy technology. The company is known for its modular catalytic gasification plants, which process waste efficiently, with capacities ranging from 50 to 500 tons per day. VistaGreen offers a comprehensive suite of services, including engineering, design, and construction, aimed at providing innovative waste management solutions. Their operations are compliant with EU emission standards, emphasizing their commitment to environmental sustainability. The company has completed various projects, including waste processing facilities, showcasing their expertise in integrating construction with waste management technologies.

19. Ingenia Consultants & Engineers BV

• Website: ingenia.nl
• Ownership type: Private
• Headquarters: Eindhoven, North Brabant, Netherlands
• Employee distribution: Netherlands 100%
• Founded year: 2001
• Headcount: 1-10
• LinkedIn: ingenia-consultants-%26-engineers-bv

Ingenia Consultants & Engineers BV, based in Eindhoven, Netherlands, is an engineering firm founded in 2001. The company specializes in transforming organic waste streams into energy and products, while also focusing on emission reduction. Ingenia offers a range of services including feasibility studies, engineering, and due diligence, primarily for businesses and organizations in the bio-energy and waste management sectors. Their expertise extends to various technologies, including gasification, pyrolysis, and biogas, which are critical in the conversion of waste into usable energy. Ingenia's approach is characterized by a commitment to sustainability and environmental compliance, helping clients navigate complex regulations and optimize their operations. With a small team of dedicated professionals, Ingenia is well-positioned to support innovative projects in the bio-energy field.

20. S3d Ingénierie

• Website: sol3d.com
• Ownership type: Private
• Headquarters: Nantes, Pays De La Loire, France
• Employee distribution: France 93%, Spain 3%, Mexico 3%
• Founded year: 2007
• Headcount: 11-50
• LinkedIn: s3d---solutions-d%c3%a9chets-%26-d%c3%a9veloppement-durable

S3d Ingénierie, founded in 2007 and based in Nantes, France, is an engineering consultancy dedicated to waste energy recovery and alternative fuels. With a team of around 30 employees, the company focuses on innovative solutions for converting waste into energy, particularly through methanization and pyrogasification. They assist industrial and agricultural clients in transforming organic waste into valuable energy resources, such as biomethane and hydrogen. S3d Ingénierie is committed to sustainability and actively participates in research and development projects, collaborating with academic institutions to stay at the forefront of technological advancements. Their expertise extends from initial project conception to execution, ensuring that clients receive comprehensive support throughout the process.

21. Terragon Environmental Technologies

• Website: terragon.net
• Ownership type: Private
• Headquarters: Montreal, Quebec, Canada
• Employee distribution: Canada 100%
• Founded year: 2004
• Headcount: 11-50
• LinkedIn: terragon-environmental-technologies

Terragon Environmental Technologies, based in Montreal, Quebec, is a private company founded in 2004. It operates with a team of approximately 30 employees and is dedicated to advancing environmental technology, particularly in waste management and resource recovery. The company has developed innovative solutions such as the Micro Auto Gasification System (MAGSTM), which allows for the onsite conversion of solid waste into energy. This system is particularly beneficial for industries that require sustainable waste management practices, including military, healthcare, and remote habitats. Additionally, Terragon offers Wastewater Electrochemical Treatment Technology (WETTTM), which purifies various types of wastewater. Their commitment to enabling zero waste habitats and reducing environmental impact positions them as a significant player in the waste management sector.

22. Polytechnik

• Website: polytechnik.com
• Ownership type: Family Owned
• Headquarters: Weißenbach, Lower Austria, Austria
• Employee distribution: Austria 41%, Romania 30%, Germany 12%, Other 16%
• Founded year: 1965
• Headcount: 201-500
• LinkedIn: polytechnik-biomass-energy

Polytechnik, founded in 1965 and based in Weißenbach, Lower Austria, is a family-owned company that specializes in biomass energy solutions. With a workforce of approximately 240 employees, Polytechnik has established itself as a significant player in the biomass energy sector, focusing on the development and construction of biomass heating power plants. The company has successfully implemented over 3,000 installations across 25 countries, showcasing its global reach and expertise. Polytechnik's product portfolio includes advanced technologies for biomass combustion, gasification, carbonization, and torrefaction. Their innovative approach aims to transform biomass residues into clean energy, contributing to sustainability and the reduction of fossil fuel dependency. The company is dedicated to addressing climate change challenges through efficient resource utilization and local solutions for energy generation.

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