Japan Biogas Plant Market Size, Share and Forecast Trends - Growth Analysis and Outlook Report (2026-2035)

The Japan biogas plant market size was valued at USD 2.09 Billion in 2025. The industry is expected to grow at a CAGR of 5.70% during the forecast period of 2026-2035 to reach a value of USD 3.64 Billion by 2035. The market growth is attributed to the ongoing strategic efforts by market players to enhance the value of biogas through advanced upgrading and downstream conversion technologies, enabling broader commercial applications and fueling significant investments.

Key Market Trends and Insights

• By feedstock, bio-municipal waste is expected to grow at a CAGR of 6.5% over the forecast period.
• By digester, dry anaerobic digestion is projected to witness a CAGR of 6.4% over the forecast period.
• By application, transportation category is projected to witness a CAGR of 6.9% over the forecast period.

Market Size & Forecast

• Market Size in 2025: USD 2.09 Billion
• Projected Market Size in 2035: USD 3.64 Billion
• CAGR from 2026 to 2035: 5.70%

Limitations of the grid and price volatility have been restricting power-only projects. This has spurred companies in the Japan biogas plant market landscape to shift towards the conversion of biogas into transport fuels and chemical intermediates, which have higher margins and stable demand. In line with this, in 2025, Asahi Kasei announced the successful demonstration of its advanced biogas upgrading technology at the Kojima Sewage Treatment Plant, achieving more than 99.5% recovery yield and 97% methane purity. The system allows the production of high-quality biomethane that can be injected into the city gas network or used as compressed fuel. The company is expected to be globally licensed for this technology from 2027, thus consolidating the trust in scalable upgrading solutions.

Likewise, Mitsubishi Gas Chemical (MGC) enhanced the biogas monetization potential by initiating the first commercial production of bio-methanol from digester gas in Japan at its Niigata Plant in June 2024. The sustainability-certified bio-methanol is designed for chemical and energy sectors that need low-carbon alternatives. Overall, such breakthroughs demonstrate how the use of advanced conversion pathways is strengthening the economics of the projects, the diversification of the end-use markets, and the speeding up of investments in the Japan biogas plant market.

Key Trends and Recent Developments

December 2025 - TotalEnergies and Japanese Partners Launch Live Oak e-NG Project

TotalEnergies, TES, Osaka Gas, Toho Gas, and ITOCHU signed a joint development agreement for the Live Oak project in Nebraska, United States of America. The facility, targeting 250 MW electrolysis and 75 ktpa methanation, will produce e-methane (e-NG) for export to Japan. This initiative advances carbon-neutral gas adoption, supports decarbonization strategies of Japanese gas companies, and strengthens global renewable energy deployment.

November 2025 - Sendai Port Biomass Plant Commences Operations

Sendai-ko Biomass Power GK started commercial operations at the Sendai Port Biomass Power Plant, a joint venture created in January 2021 by Sumitomo Corporation, Tokyo Gas, Hokuriku Electric Power, and Sumitomo Corporation Tohoku. With a 112 MW output, the plant converts sustainably sourced wood biomass into renewable electricity, supporting regional energy security and contributing to Japan’s carbon-neutral and renewable energy growth targets.

August 2023 - New Biogas Plant in Sagamihara Begins Operations

HoSt Group has opened a biogas facility in Sagamihara, Japan, that converts pig feed and food waste into renewable electricity. The plant, creating 530 kWe and 1.9 million Nm of biogas annually, serves as a model that shows how anaerobic digestion can be used to transform organic waste into clean energy. This progression solidifies the Japan biogas plant market growth through the introduction of eco-friendly energy solutions and by increasing the supply of renewable electricity.

February 2023 - Sojitz established one of Japan's largest biomass power plants

Sojitz Corporation and Nippon Paper Industries commissioned the 74.95 MW Yufutsu Energy Center in Hokkaido and started commercial operations. The plant uses woodchips, PKS, and discarded forest residues, thus contributing to a stable, renewable electricity supply and regional development. With this move, Sojitz is not only reinforcing its commitment to the expansion of biomass and low-carbon energy but also becoming a key contributor to Japan's renewable energy market.

Expansion of Biogas Plant Projects

The entry and upscaling of foreign plant suppliers is contributing significantly to the development of infrastructure in the Japan biogas plant market. To that effect, in March 2025, WELTEC BIOPOWER secured orders for a series of biogas plant projects, including facilities of 450 kW and 250 kW in the Yamagata Prefecture and a further 450 kW plant planned near Nagano Prefecture. The orders reflect the growing demand for complete biogas solutions and a demonstration of the confidence of project developers and feedstock holders towards commercial biogas technologies.

Deployment of Advanced Biogas Purification Technologies

Advanced biogas purification systems have become a key factor in enabling biogas plants to operate with profitability in Japan. As a result, in February 2025, Asahi Kasei, together with Kurashiki City, launched a biogas purification system at Kojima Sewage Treatment Plant employing zeolite-based CO separation and PVSA technology. The system allows for the extraction of biomethane with a high degree of purity from sewage-derived biogas, thus elevating the fuel standard and facilitating power generation. Such developments in the Japan biogas plant market boost the diffusion of technologies, further fueling capital into next-generation biogas infrastructure.

Strategic Feedstock Agreement for Bio-Methanol Production

Strategic partnerships that secure feedstock for downstream product conversion are enhancing the viability of biogas projects. For instance, in June 2023, Mitsubishi Gas Chemical Co., Inc. (MGC) signed a basic agreement with Niigata Prefecture to purchase unused biogas from a municipal sewage facility, intending to convert it into bio-methanol at its Niigata Plant. This agreement combines biogas supply with advanced chemical production, thus fueling the Japan biogas plant market revenue and enabling wider investment in biogas plant infrastructure.

Domestic Utilities Expand Large-Scale Biogas Projects

Domestic energy companies are scaling up biogas investments to meet renewable energy and waste management goals. Tokyo Enesys, in June 2025, unveiled the Kumamoto biogas power project in Kumamoto Prefecture, a 1.6 MW plant using food and sewage waste, aimed at commercial operation in July 2029. The project goes beyond simply power generation by integrating advanced anaerobic digestion and resource recovery. This example is a clear demonstration of the utility's commitment to larger-scale biogas deployment. Such moves by utilities pave the way for wider market acceptance and pull in more investment into the Japanese biogas industry.

Long-Term Purchase Agreements Strengthen Market Linkages

Long-term offtake and purchase agreements are deepening confidence in the Japan biogas plant market and cross-border supply integration. For instance, in November 2025, Mitsubishi Gas Chemical (MGC) signed a long-term purchase agreement with the United States-based Transition Industries for ultra-low carbon methanol. This gave MGC extended access to sustainable fuels derived from biogas and related feedstocks. As a result, this collaboration not only broadens the supply sources but also corresponds to the Japanese industrial demand in the global sustainable fuel markets.

Japan Biogas Plant Industry Segmentation

The report titled “Japan Biogas Plant Market Report and Forecast 2026-2035” offers a detailed analysis of the market based on the following segments:

Market Breakup by Feedstock

• Bio-Municipal Waste
• Agriculture Residue
• Energy Crops

Key Insight: The Japan biogas plant market relies on diverse feedstocks like bio-municipal waste, agricultural residues, and energy crops. For instance, Toyo Energy Solution, in collaboration with Anaergia, manufactures plants that handle cow manure and food residues to produce biogas. Meanwhile, Sagamihara Biogas Power, HoSt Group's facility, is an excellent example of using bio-municipal waste like pig feed and food waste for renewable power generation. While the energy crop sector is still growing, it is expected to be a major focus of feedstock diversification in the future. This, in turn, attracts developers looking for stable, high-yield biomass sources.

Market Breakup by Digester Type

• Wet Anaerobic Digestion
• Dry Anaerobic Digestion

Key Insight: The Japan biogas plant market scope comprises technologies for both wet and dry anaerobic digestion, which are designed for the specific characteristics of the feedstock. Wet anaerobic digestion is highly preferred by most developers, such as TOYO Energy Solution, which transforms livestock manure and food waste into biogas with stable methane yields. On the other hand, dry anaerobic digestion is represented by ORIX Environmental Resources Management's Yorii Biogas Plant, which utilizes general waste like food and paper and is one of the largest dry fermentation facilities in the region.

Market Breakup by Application

• Power Generation
• Heat Generation
• Transportation

Key Insight: Japan's biogas plants are designed to serve power generation, heat generation, and transportation applications, thereby increasing market utility. For power generation, facilities like HoSt Group's Sagamihara Biogas Power Plant, using CHP systems, convert organic waste into electricity and heat. Heat generation, which is a by-product of power production, can be used in industrial and onsite settings, thus improving the plant's economics. In the transportation sector, the focus on biomethane and CBG solutions is increasing, which is also supported by technology providers like NASKEO Environnement, who are partnering with local operators. This trend in the Japan biogas plant market indicates the increasing demand for renewable transport fuels derived from biogas.

Japan Biogas Plant Market Share

By feedstock, the bio-municipal waste category records notable growth

Bio-municipal waste is a key contributor to Japan's biogas feedstock mix, along with agricultural residues and energy crops, thus increasing the production of biogas from organic waste. For example, in July 2025, Suzuki Motor Corporation made public the collaboration with dairy partners under the UNIDO Industrial Cooperation Program to produce cow dung biogas and develop supply solutions. This reflects how organic waste streams can be utilized commercially and scaled. It not only deepens the use of municipal organic waste but also acts as a source of feedstock to a wider range of sectors, thus facilitating the deployment of biogas plants that are more resilient and diversified across different sectors.

Energy crops are gradually becoming dependable feedstocks in the Japan biogas plant market, which, along with bio-municipal waste and agricultural residues, can guarantee continuous plant performance throughout the year. In August 2025, Breakthrough Energy and the Japanese government entered a partnership to expedite the commercialization of biomass and associated technologies, among which is the scalable use of crop-based biomass feedstocks. The collaboration combines funds and expertise to advance the utilization of energy crops, support the deployment of biogas facilities, and further attracting investor interest in the renewable fuel value chains.

By digester type, wet anaerobic digestion witnesses increasing uptake

Wet anaerobic digestion technologies are increasingly being adopted in the Japan biogas plant market to process high-moisture feedstocks such as sewage and food waste. These systems are being used in conjunction with dry systems to maximize the organic utilization. In May 2025, IPC (IHI Plant Services) signed a Memorandum of Understanding with MTC OREC, Malaysia, to co-develop biomethane production from anaerobic wastewater treatment technologies that recover methane efficiently using wet digestion. The collaboration between IPC and MTC OREC demonstrates how leading-edge innovations in wet digestion are elevating biogas yields and facilitating the local and global deployment of stable digestion systems.

Dry anaerobic digestion is designed for high-solid biomass such as crop residues and can be supported by wet digestion for liquid wastes, thus increasing the range of plant applicability. In September 2025, NOVATERA GmbH, a joint venture of Nippon Gases and TES Bio-LNG, made an announcement regarding the introduction of on-site biogas processing and micro-liquefaction systems that enable dry digestion and value extraction at plant locations. The availability of such modular solutions provides operational flexibility, allows for higher methane recovery rates, and thus, contributes to the Japan biogas plant market expansion.

By application, heat generation shows robust growth

Biogas heat generation improves the overall energy utilization when combined with power and transportation fuel uses. In June 2025, Tokyo Enesys revealed its Kumamoto biogas power project, which is a 1.6 MW CHP plant that captures heat from organic digestion for onsite uses and district applications, demonstrating biogas integration across combined heat and power solutions. This method raises energy efficiency, helps meet industrial heat demand, and stimulates developments in energy-rich biogas infrastructures.

Meanwhile, power generation continues to be a major application category in the Japan biogas plant market, along with the integration of renewable systems. In November 2025, Osaka Gas Trading and Export (OGTX) decided to purchase about 26,000 Nm of United States landfill-derived biomethane from Archaea Energy, showing the integration of the cross-border supply chain that supports the use of renewable gas in Japan’s city gas networks and thus, strengthening the demand for biogas-based electricity generation solutions. The agreement is a catalyst for investment in biogas value chains that supply power infrastructure and energy security strategies.

Competitive Landscape

Leading Japan biogas plant market players are increasingly emphasizing technology innovation and value-chain integration to enhance project viability. To maximize output efficiency, companies are investing in advanced anaerobic digestion, biogas upgrading, and downstream fuel conversion. Developers are securing a stable feedstock supply through strategic collaborations with municipalities, utilities, and industrial users while also facilitating the expansion of applications across the power, heat, and transportation energy markets.

At the same time, top biogas plant companies in Japan are implementing expansion strategies led by partnerships and commercialization strategies based on demonstrations to expand their footprint across the market. They are using pilot projects, public-private partnerships, and government-backed demonstrations to validate new technologies and investment risk reduction. Such initiatives provide companies with opportunities in the Japan biogas plant market to replicate successful models, draw in long-term capital, and contribute to the development of a robust biogas ecosystem in Japan through commercially viable and environmentally friendly projects.

TOYO ENERGY SOLUTION CO., LTD.

TOYO ENERGY SOLUTION CO., LTD., established in 1995, is in Tokyo, Japan. The company is known for the design and supply of advanced biogas and renewable energy systems. The main areas of the company's activities are the sales of turnkey biogas plants and waste-to-energy solutions, as well as the innovation of anaerobic digestion technologies for municipal and agricultural applications.

HoSt Holding B.V.

HoSt Holding B.V. was established in 1990 and is based in the Netherlands. It develops and operates large-scale biogas and renewable energy projects. Due to the integration of sustainable feedstock management with high-efficiency energy conversion systems, the company has become a reliable source of electricity and heat generation from organic waste, further solidifying its position in the Japan biogas plant market.

SAGAMIHARA BIOGAS POWER

SAGAMIHARA BIOGAS POWER was established in 2002, and it is in Kanagawa, Japan. The company runs biogas plants by using municipal and agricultural waste for electricity generation. It integrates eco-friendly energy solutions through CHP systems with state-of-the-art digester technologies to increase methane yield and environmental advantages.

Weltec Biopower GmbH

Weltec Biopower GmbH was established in 1995 and is based in Vechta, Germany. The main areas of the company's activities are customized biogas plants and anaerobic digestion solutions. The company's expertise goes beyond the phases of project planning, construction, and operation to include the long-term support of agricultural, industrial, and municipal clients worldwide.

Other players in the market include Krieg & Fischer Ingenieure GmbH, Seiko Epson Corporation, Asahi Kasei, Swing Corporation, and BTS Biogas, among others.

Key Highlights of the Japan Biogas Plant Market Report

• Comprehensive Historical Performance and Forecasts: This report dissects the historical performance of the Japan biogas plant market in detail and provides precise forecasts till 2035, thus offering the stakeholders a clear perspective of the long-term trends and the evolution of the market.
• Insights into Product Innovations and Technology Adoption: It sheds light on the new technological advancements in biogas plants, such as high-purity biomethane systems, anaerobic digestion methods, and novel feedstock utilization, thus enabling enterprises to recognize the emerging opportunities.
• In-depth Competitive Landscape Profiling: The research features leading local and foreign biogas plant developers, analyzing the company strategies, product portfolios, market presence, and certifications to offer the competitive intelligence which can be acted upon.
• Regional Analysis Identifying Emerging Growth Areas: The major regions are scrutinized for their market share, growth potential, and investment attractiveness, thus facilitating the decision-makers in selecting the locations with a high potential for biogas plant development.
• Investment-Focused Outlook Supported by Data: The report combines the financial and market information to present an investment-centered view, thus aiding the stakeholders in evaluating the feasibility of the projects, opportunities for raising funds, and the long-term returns in the biogas sector in Japan.