The Global Anaerobic Digestion Market was valued at US$ 112.8 Million in 2022 and is projected to reach US$ 155.4 Million by 2029, growing at a Compound Annual Growth Rate (CAGR) of 4.7% during the forecast period. This growth is being driven by stringent environmental regulations, the global push for renewable energy sources, and the escalating need for sustainable organic waste management solutions across municipal, industrial, and agricultural sectors.

As the world intensifies its focus on a circular economy and carbon neutrality, the spotlight is on the key technology providers and plant operators who are driving innovation, efficiency, and cleaner energy pathways. In this blog, we profile the Top 10 Companies in the Anaerobic Digestion Industry—a mix of established engineering firms, specialized biogas producers, and waste management giants shaping the future of organic waste valorization.

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🔟 1. Veolia Environnement S.A.

Headquarters: Paris, France
Key Offering: End-to-End Anaerobic Digestion Plant Design, Build, and Operation

Veolia is a global leader in optimized resource management, with a significant portfolio of anaerobic digestion projects worldwide. The company specializes in converting organic waste from municipalities and industries into biogas for energy and digestate for agriculture, offering comprehensive solutions from feasibility studies to long-term operation.

Sustainability Initiatives:

• Global target to produce 3.5 TWh of biogas energy by 2023 (achieved)

• Integration of AD with composting and nutrient recovery systems

• Committed to achieving ecological transformation goals

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9️⃣ 2. EnviTec Biogas AG

Headquarters: Lohne, Germany
Key Offering: Turnkey Biogas Plants, Biogas Upgrading to Biomethane, Plant Operation Services

EnviTec Biogas is a vertically integrated German powerhouse, covering the entire biogas value chain. The company has built over 1,000 plants globally and operates a significant number of its own facilities, producing renewable energy and high-quality fertilizers.

Sustainability Initiatives:

• Pioneer in biogas upgrading and injection into natural gas grids

• Focus on feedstock flexibility, including agricultural residues and waste streams

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8️⃣ 3. PlanET Biogas Global GmbH

Headquarters: Vreden, Germany
Key Offering: Modular and Custom Biogas Plants, Digestate Processing, Gas Upgrading

PlanET Biogas is an international leader in biogas plant engineering, with a strong presence in Europe and North America. The company is known for its reliable, efficient, and modular plant designs that cater to farms, industrial clients, and municipalities.

Sustainability Initiatives:

• Emphasis on reducing the carbon footprint of plant construction and operation

• Development of advanced digestate treatment solutions for nutrient recycling

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7️⃣ 4. Clarke Energy (a Kohler Company)

Headquarters: Liverpool, United Kingdom
Key Offering: GE Jenbacher Gas Engines, Turnkey CHP Solutions, Biogas Plant Integration

Clarke Energy is a specialist in distributed power generation and a key player in the anaerobic digestion sector. The company provides highly efficient combined heat and power (CHP) engines that are optimized to run on biogas, maximizing energy yield from digestion plants.

Sustainability Initiatives:

• Leader in converting biogas to renewable electricity and heat

• Global service network ensuring high plant availability and efficiency

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6️⃣ 5. WELTEC BIOPOWER GmbH

Headquarters: Vechta, Germany
Key Offering: Stainless Steel Digesters, Turnkey AD Plants, Biomethane Upgrading

WELTEC BIOPOWER has been building robust anaerobic digestion plants from stainless steel for over two decades. The company’s strength lies in its durable digester technology and its ability to handle a wide variety of challenging feedstocks, including manure, food waste, and energy crops.

Sustainability Initiatives:

• Focus on long-lasting, low-maintenance plant infrastructure

• International projects promoting local renewable energy production

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5️⃣ 6. Xergi A/S

Headquarters: Kibæk, Denmark
Key Offering: Large-Scale Centralized Biogas Plants, Process Optimization, R&D

Xergi is a Danish specialist in designing and building large-scale, high-tech biogas plants. The company is renowned for its expertise in process optimization and its focus on creating financially viable projects that make a significant impact on regional waste management and energy systems.

Sustainability Initiatives:

• Expertise in co-digestion of multiple organic waste streams

• Strong focus on research and development for process efficiency gains

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4️⃣ 7. BTS Biogas Srl

Headquarters: Brescia, Italy
Key Offering: Biogas Plant Technology, Agripower® Farm-Scale Solutions, Service & Maintenance

BTS Biogas is a leading Italian company with a strong international footprint, particularly in Europe and the Americas. It offers tailored solutions ranging from small farm-based units to large industrial plants, with a reputation for robust engineering and reliable performance.

Sustainability Initiatives:

• Promotion of biogas as a key tool for sustainable agriculture

• Development of standardized, cost-effective plant modules

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3️⃣ 8. Biogen (UK) Ltd.

Headquarters: Bedford, United Kingdom
Key Offering: Food Waste AD Plants, Renewable Energy Generation, Organic Recycling

Biogen is one of the UK’s leading food waste recyclers, operating a network of advanced anaerobic digestion facilities. The company specializes in processing commercial and industrial food waste into renewable energy and biofertilizer, contributing significantly to the UK’s circular economy.

Sustainability Initiatives:

• Diverting hundreds of thousands of tonnes of food waste from landfill annually

• Production of low-carbon electricity and biofertilizer for local use

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2️⃣ 9. Blue Sphere Corporation

Headquarters: Charlotte, North Carolina, USA
Key Offering: Organic Waste-to-Energy Project Development, Facility Ownership/Operation

Blue Sphere is a project developer and independent power producer focused on anaerobic digestion facilities in North America and Europe. The company develops, owns, and operates plants that convert organic waste into clean energy, often selling power under long-term agreements.

Sustainability Initiatives:

• Focus on mitigating methane emissions from organic waste disposal

• Creating localized energy and waste management infrastructure

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1️⃣ 10. Tamar Energy (part of Ecotricity Group)

Headquarters: Stroud, United Kingdom
Key Offering: Development and Operation of a Network of AD Plants

Tamar Energy developed one of the UK’s largest networks of anaerobic digestion plants before its acquisition by Ecotricity. The company’s vision was to create a decentralized system of plants that would provide a reliable source of green gas to the national grid and local communities.

Sustainability Initiatives:

• Building scale in the UK biogas sector to drive down costs and increase impact

• Integration of biogas production with green energy supply for consumers

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🌍 Outlook: The Future of Anaerobic Digestion Is Integrated and Intelligent

The anaerobic digestion market is undergoing a profound transformation. While traditional agricultural-based plants remain vital, the industry is rapidly advancing through digitalization, feedstock diversification, and integration with other waste valorization technologies.

📈 Key Trends Shaping the Market:

• Rise of biomethane upgrading for grid injection and transport fuel, creating higher-value outputs

• Increased processing of source-separated organic waste from municipalities and food industries

• Adoption of IoT sensors and AI for real-time process monitoring and predictive maintenance

• Growing policy support via green gas certificates, carbon pricing, and renewable energy mandates

Get Full Report Here:
Anaerobic Digestion Market – View in Detailed Research Report

The companies listed above are not only managing organic waste—they’re building the infrastructure for a decarbonized, circular economy.