Beyond Fuel: How Brazil Plans to Export Biomethane Technology to the Global South

A study made for Instituto MBCBrasil says Brazil may sell biomethane know-how to other countries. It points to growing world demand for cleaner transport fuels. The work was done by teams from the University of São Paulo, the Federal University of Itajubá, the Agronomic Institute of Campinas, and Mauá Institute of Technology.

The report also looks past fuel output. It says Brazilian firms could provide more than one kind of service and product. That includes biodigesters, gas cleaning units, and ways to move liquid biomethane. It also mentions linked solutions that tie renewable gas production to making low-carbon fertilizer.

The study highlights the sugar and ethanol industry as a key base. It estimates a biomethane production potential of 41.4 billion cubic meters each year. That number is put at more than 41 billion liters of diesel. Still, the report says under 2% of this potential is used today.

Glaucia Mendes Souza, a professor at USP, helped lead the study. She is also linked to IEA Bioenergy Task 39. In the report, she says Brazil’s chance is not only to make the fuel. She adds that Brazil can also take the role of supplier of technology, equipment, engineering work, and connected solutions for other places trying to cut emissions.

The study said this know how could be shipped to Latin America, parts of Asia, and parts of Africa. Those places have a lot of farm waste. They also do not have enough biodigestion systems. It noted that Brazilian firms such as Cocal, Raizen, Sao Martinho, and Adecoagro have already built biomethane plans. They use vinasse and sugar cane leftovers. For the 2024/25 crop season, Brazil handled about 680 million tonnes of sugar cane. The study put vinasse output at about 380 billion liters.

Biomethane is made after biogas is cleaned up. The biogas starts when organic material breaks down. In Brazil, the biggest inputs include landfill material and farm waste. That includes waste from livestock, vinasse, and filter cake from sugar and ethanol mills. After cleanup, the fuel acts much like fossil natural gas. It can be used for heat, for factory use, and for transport. It can also be put into existing gas lines.

The report also said the world market can grow more. It said biomethane is made in around 40 countries. It is also used for transport in close to 30 markets. It estimated global sustainable biogas and biomethane at about 1 trillion cubic meters each year. That is about a quarter of today’s natural gas use worldwide. It added that the European Union wants 35 billion cubic meters of biomethane per year by 2030. It said this is supported by plans for about 37 billion euros in investment.

Switching diesel to biomethane can lower well to wheel carbon dioxide equivalent output by about 45% to 75%, based on the study. In certain waste and manure setups, the result can look even lower than zero. It may show a negative 246% gap versus diesel once methane leaks that would have happened are factored in.

The fuel might also hold up on price for large trucks and fleets. In total cost of ownership runs, compressed natural gas or biomethane came out to $1.73 per km. Diesel was $1.87 per km. The study also noted that in Brazil, biomethane could be roughly 30% cheaper than diesel in one case, or about 25% more expensive in another.

Comgás targets small and medium-sized customers

Comgás has rolled out a new biomethane option for smaller and mid-sized firms in Sao Paulo state. It is offered under a regulated structure. The name of the program is Mercado Cativo Verde.

At the start, the deal includes 2,673 cubic meters of biomethane each day. Over time, it can rise up to 50,000 cubic meters per day. That depends on how demand grows and how supply and rules play out.

The Sao Paulo Public Services Regulatory Agency approved the plan. Before this, getting biomethane from the distributor mainly worked for big industrial users. Those customers were in the state’s free gas market. That free market makes up roughly 80% of Comgás sales volume.

Now the focus is on other types of buyers. The list includes smaller factories. It also includes refrigeration operators, cogeneration projects, and mobility users. Examples are commercial fleets and compressed natural-gas stations.

Comgás says it will put about 10 billion reais into the effort through 2029. The spending is meant for things like expanding the network. It also covers resilience work and new links between biomethane producers and end users. The company also expects more room for its buyers in the free gas market in 2029. It also expects higher demand tied to decarbonization in commercial fleets.

Henrique Sonja, the supply director at Comgás, said the program is meant for customers who want biomethane as part of their sustainability work. He added that they also want the steadiness of a regulated market, without extra complexity.

Buyers are not asked to take the exact physical molecule made by a supplier. What they do must still be checked. The system requires that an equal volume be proven to be made, fed into the network, and then bought. After that, each volume’s environmental claim is logged in a tracking tool. When the purchase is completed, that entry is closed. This is meant to stop the same claim from being used again or resold.

The setup also relies on Biomethane Guarantees of Origin. These were made under Brazil’s Fuel of the Future law. Their job is to show the fuel’s renewable source and keep a clear trace. Comgás intends to charge for the biomethane and the environmental claim in one bill. The charge will follow the regulated market tariff rules.

In 2025, Brazil made 1.06 million cubic meters of biomethane each day. That is against a figure of 120 million cubic meters per day for technical potential. ABiogás, an industry group, set that estimate. ABiogás also says the biogas and biomethane chain could pull in 246 billion reais in investment. It could also create 110,000 jobs by 2035.

By June 2026, Brazil had 21 plants that were allowed by the National Agency of Petroleum, Natural Gas and Biofuels. Those plants had a combined installed capacity of 1.33 million cubic meters per day. At the same time, 48 more plants were in the approval process. If that work stays on track, total national capacity could reach 3.37 million cubic meters per day by 2028.

Comgás (CGAS5) Opens Call for Biomethane Plants as Brazil Eyes Major Gas Market Expansion

The Brazilian gas distributor Comgás announced that it has opened its public proposal period for connecting biomethane plants to its distribution network. 

Comgás will accept commercial proposals until March 30 for businesses that want to connect their biomethane plants to its distribution system. 

The public call was launched by the concessionaire located in São Paulo after Arsesp established the interconnection rules which determine how biomethane plants must connect to distribution networks. The agency also established aTusd-Verde distribution tariff system which allows producers to access a dedicated distribution rate. 

Comgás will present Arsesp with a business plan for plant interconnections in São Paulo state which they will complete by the end of June this year. 

The Usina Costa Pinto plant in Piracicaba and the Paulínia landfill currently maintain active connections to the Comgás distribution network. These two plants together supply the Comgás network with around 300.000 cubic meters of biomethane every day. 

The Brazilian Association of Biogas and Biomethane ABIOGÁS reports that Brazil produces 2 million cubic meters of daily biomethane. The organization ABIOGÁS believes that Brazil can raise its current output to 8 million cubic meters per day by the start of the next decade. Brazil has the ability to reach a production capacity of 120 million cubic meters per day by 2040 through appropriate investment strategies.

If this scenario materializes, Brazil could not only meet its domestic market demand but also export biomethane. This would allow the country to replace all currently imported Liquefied Petroleum Gas (LPG) in less than two decades and reduce diesel purchases by approximately 70% if biomethane is properly introduced into the transport sector, especially for heavy vehicles such as trucks and buses.

A study titled "Structuring Initiatives and Challenges to Boost Low-Carbon Mobility in Brazil by 2040," (Iniciativas e Desafios Estruturantes para impulsionar a mobilidade de baixo carbono no Brasil até 2040) conducted by LCA Consultores at the request of the MBCBrasil Institute, identifies biomethane as a key component in the decarbonization of heavy transport in Brazil, potentially leading to a new economic surge for the country.

From Landfills to Legislation: The Expansion of Brazil’s Biomethane Market

Brazil’s biomethane industry is gaining momentum as pioneering production projects converge with a new regulatory framework designed to expand the market and attract investment.

One of the sector’s landmark initiatives is located at the Dois Arcos sanitary landfill in São Pedro da Aldeia, Rio de Janeiro state. Operational since 2014, the facility became the first landfill in Brazil authorized to commercialize biomethane, receiving regulatory approval in 2017 from ANP, the National Agency of Petroleum, Natural Gas and Biofuels. Initially designed to produce around 16,000 cubic meters of biomethane per day, the plant has increased capacity to 18,480 m³/day through operational efficiency gains.

The landfill receives roughly 900 tons of municipal waste per day from eight municipalities, generating biogas through the anaerobic decomposition of organic material. The gas is captured through a network of more than 300 wells, about half of which remain active. Technicians continuously monitor methane concentrations and pressure levels to maximize gas recovery.

A key innovation at the site is its hybrid system, which allows biogas to be directed either to biomethane upgrading or to electricity generation. Higher-quality methane streams are routed to the biomethane plant, while lower-grade gas is used to produce power.

Beyond production, Brazil is also developing a regulatory ecosystem to support the biomethane market. Certification company, the Instituto Totum, founded in 2004, operates as a third-party agent providing verification, validation and certification services in various sectors, including biomethane.

A major regulatory milestone is the Fuel of the Future Law, whose discussions began in 2024 and which aims to expand biomethane use through the creation of the Biomethane Origin Guarantee Certificate (CGOB). The certificate separates the physical biomethane molecule from its environmental attribute, allowing producers to sell the fuel locally while trading the environmental credit independently. This mechanism is seen as particularly important in Brazil, where transporting biomethane over long distances can be logistically challenging.

The CGOB differs from the existing Gasc certification program, which primarily serves the voluntary market for biogas and biomethane. While Gasc uses a simpler purchasing process and measures gas in calorific value (millions of BTUs), CGOB focuses on biomethane that meets national fuel standards and measures volumes in cubic meters. The new system also requires buyers to participate directly in the registration and retirement of certificates, reflecting its more regulated structure.

Industry participants expect the new framework to stimulate investment and encourage biomethane production across the country. As the market expands, certification firms such as Toton are preparing to operate within the new system, ensuring transparency and preventing double counting between certification schemes while offering producers greater flexibility in how they commercialize their biomethane and associated environmental attributes.

The biomethane sector in Brazil is now poised for significant growth, driven by new policies aimed at increasing the share of renewable natural gas in the energy matrix. 

Although biomethane has been blended in places like Ceará into the gas network since 2018, the current production from 11 plants (840,000 m³/day) is minimal compared to Brazil's natural gas demand, which is 61 million m³/day. 

The main consumers include thermoelectric power plants, industrial users, and residential networks. The sector is expected to experience significant growth after 2026, when the Future Fuel Act will require gas distributors to blend biomethane with natural gas, starting at 1% this year and reaching 10% by 2035, with the goal of reducing fossil fuel consumption and greenhouse gas emissions.

Thus, under Brazil’s new regulatory framework, demand for biomethane is expected to rise sharply. Petrobras alone may require around 700,000 cubic meters of biomethane per day to comfortably meet its mandated blending quota, an amount that is nearly equal to the country’s current total biomethane production capacity.

Other distributors are also increasing their use of the renewable gas. São Paulo-based distributor Comgás already injects about 71,000 cubic meters of biomethane per day into its network, primarily supplied by a project in the city of Piracicaba. The company is now pursuing additional supply agreements as it prepares to expand biomethane use under the new regulations.