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.

Brazil's Biomethane Boom: A Green Energy Revolution on the Horizon

Brazil is about to make major progress in its green energy transition because the biomethane industry will draw investments that reach R$348 billion which equals US$68 billion and will build production facilities that exceed current capacity by more than 100 times. The Brazilian Association of Biogas (Abiogás) made this ambitious estimate which shows that Brazil can turn organic waste into renewable energy resources because of its extensive organic waste resources.

A new regulatory system drives this expanding sector forward through its implementation of a resolution approved by the National Energy Policy Council (CNPE) which serves as its foundation. The regulation requires natural gas producers and importers to achieve emissions reductions of 0.5 percent through their biomethane usage in operational activities. Maria Clara Pontelli who works as a technical and regulatory analyst at Abiogás considers this target to be essential for the mission of her organization.

According to Pontelli, the new measures are vital because technical studies from Abiogás determined that the existing 0.25% target did not reflect current biomethane development in Brazilian industry. She explained that the 0.5% target better represents industry operations because it can be achieved with current resources and ongoing projects. The industry considers this regulatory progress to be an important achievement because it proves that Brazil has reached a stage where biomethane production has become established and it delivers clear economic signals which will attract future investments.

The policy establishes the Certificate of Origin Guarantee for Biomethane (CGOB) which will help create financial value for the environmental benefits associated with biomethane. This allows for the separation of the biomethane molecule's commercialization from its environmental attribute, broadening market reach and attracting diverse demand profiles, from industrial consumers to companies seeking to decarbonize their supply chains.

Overcoming Infrastructure Hurdles

The industry operations show great potential but face multiple difficulties that primarily stem from infrastructure needs. Biomethane production in Brazil operates as a decentralized system which establishes production sites near agro-industrial facilities and agricultural land and urban waste disposal points throughout the country. The natural gas pipeline system in Brazil only extends to coastal areas which creates difficulties for moving biomethane through the country.

"The situation requires new logistical models which include CNG truck road transport and decentralized consumption systems that work near production facilities," Pontelli explained. The CGOB will enable the organization to address a historical problem because it provides a dedicated tool which allows the assessment of biomethane's environmental value for fair competition with fossil fuels.

Current Landscape and Future Projections

Currently, Brazil boasts 19 ANP-authorized plants producing and commercializing biomethane, with a combined installed capacity exceeding 1.19 million cubic meters per day (Mm³/d). This figure doesn't include numerous units producing biomethane for self-consumption, particularly in rural and agro-industrial areas, suggesting the actual production volume is higher.

The growth trajectory is robust. The ANP reports 44 plants in the authorization process, projected to add approximately 1.77 Mm³/d by 2028. Looking further ahead, Abiogás estimates Brazil could reach 8 Mm³/d by 2032, with around 200 plants in operation. The theoretical potential, considering all organic waste, could even reach 120 Mm³/d.

Investments are expected to follow this growth, with the R$348 billion figure reflecting the long-term potential. The 0.5% target is crucial in reducing demand risk, making projects more bankable and aligning them with decarbonization strategies.

Key Projects and Financing

Biomethane production projects are predominantly concentrated in landfills, utilizing biogas for energy recovery, and in agro-industrial waste, particularly from the sugar-energy sector and animal waste. The sugar-energy sector, especially in the Southeast region, is anticipated to drive much of the future growth.

Financing for these projects is increasingly available, with the new regulatory target expected to further boost interest. Brazil's financial landscape offers a wide array of instruments, including the Climate Fund, Finame Low Carbon, Finem, RenovAgro, Inovagro, and Prodecoop, operated by the BNDES, alongside support from Finep and regional development banks.

Technological Advancements and Global Ambitions

Manuela Caiate, President of the Board of Directors at MDC Energia, highlighted the role of technology in the sector's evolution. "The possibility of always seeking the best technology, nationalizing equipment, has always been a concern, always seeking cost efficiency and, obviously, safety in the production process," Caiate noted. She also pointed to advancements in biomethane purification technologies and the increasing availability of gas-powered trucks and buses, which can run on both natural gas and biomethane.

Brazil is also looking beyond its borders, exploring the potential for biomethane exports, particularly in the maritime sector. Discussions within the International Maritime Organization (IMO) about low-carbon fuels for shipping present a significant opportunity. Caiate emphasized the efforts to position biomethane in this global market, working with associations in the US, Europe, and Canada.

"This creates a biomethane market more akin to a global commodity, integrating this market," Caiate stated, acknowledging it's a long-term plan. The country's commitment to sustainable fuels was also evident at COP30, where Brazilian entities advocated for a significant increase in renewable fuel production by 2035.

While the transition away from fossil fuels will be a gradual process, Brazil, with its 90% renewable electricity matrix, is focusing on decarbonizing other energy sectors. Biomethane, alongside ethanol and biodiesel, is seen as a crucial component of a diversified biofuel mix that will drive the country's energy transition, especially given the climate of insecurity produced by the war between the US and Iran and the closure of the Strait of Hormuz. The recent regulatory developments and the vast untapped potential position Brazil as a key player in the global biomethane landscape, offering a compelling model for circular economy and sustainable development.

Brazil Accelerates Biomethane Investments as Diesel Imports and Oil Risks Rise

Brazil could slash its diesel imports by 50% within the next ten years by scaling up biomethane production for heavy transport, the head of sugar and ethanol giant Copersucar said on Wednesday.

Speaking at the launch of the "BioRota" project in the Port of Santos, Copersucar President Tomás Manzano stated that the integration of biomethane — a renewable gas produced from organic waste like sugarcane vinasse — is an "irreversible path" for the country's energy matrix.

"The vinasse is already there at the ethanol mills; it is only a matter of time before the mills start producing [biomethane]," Manzano told reporters. "In time, we have no doubt that every mill in Brazil will have a biomethane plant."

Brazil currently imports approximately 20% of the diesel it consumes. Domestic energy security has become a heightened priority for both the government and the private sector as geopolitical tensions created by the war between Iran and US, which had threatened global oil supply routes and price stability.

LOGISTICAL SHIFT

Unlike conventional fossil gas extraction, Brazil’s biomethane industry is built around agricultural waste, landfill residues and animal manure — a decentralised model that industry executives argue creates both environmental and economic benefits.

The expansion has also begun attracting attention from traditional oil and gas companies. Across Europe, majors including Shell and TotalEnergies have already increased investments in biomethane infrastructure, viewing renewable gas as a strategic complement to fossil fuel operations.

Brazil may follow a similar trajectory, analysts say, though domestic oil companies remain heavily focused on pre-salt offshore reserves and conventional gas exploration.

Copersucar, a global leader in sugar and ethanol trading which sold 15.6 million tonnes of sugar in the 2024/25 season, is leading the charge with its BioRota initiative. The project has already replaced 15% of the company's diesel truck fleet with vehicles powered by biomethane derived from sugarcane waste.

The sustainable route connects mills in the interior of São Paulo state to export terminals in Santos. According to company data, switching from diesel to biomethane can reduce greenhouse gas emissions by up to 90% while lowering logistical costs. Copersucar estimates the project already replace 5 million liters of diesel between April of 2024 and March of 2026, avoiding over 8,000 tonnes of CO2 emissions.

REGULATORY MOMENTUM

The industry's optimism follows recent regulatory steps by Brazil’s National Energy Policy Council (CNPE), which established a formal mandate for emissions reductions in the natural gas market.

Brazil currently has 19 authorized biomethane plants, with another 50 awaiting approval. ABiogás internal studies suggest the country could see more than 100 new plants by the end of the decade.

Anhother major factor shaping the industry’s outlook is Brazil’s sweeping tax reform, due to take effect from 2027. Under the proposed framework, renewable fuels such as biomethane are expected to receive substantial tax advantages compared with fossil fuels.

Industry executives say the reforms could reduce tax rates on biomethane by up to 90% relative to fossil gas, significantly improving project economics and accelerating investment decisions.

Furthermore, biogas is democratic, because it allows small and medium-sized businesses to participate in energy production in a way that was never possible in the traditional oil and gas industry. This, for an industry that only a few years ago struggled for mainstream recognition, points to the scale of today’s ambitions marks and to a dramatic shift in Brazil.

BILLION-DOLLAR INVESTMENTS

Environmental licenses for biogas and biomethane projects more than triple in São Paulo state. The number increased by 235% between 2024 and 2025, according to a survey obtained exclusively by Broadcast.

Adding to the momentum, bioenergy firm Atvos announced a 2.36 billion reais ($410 million) investment to build three new industrial units in Mato Grosso do Sul. The plan includes two corn ethanol plants and what is projected to be one of the world's largest biomethane facilities.

The Atvos project aims to produce 500 million liters of corn ethanol annually across the two new sites, while the biomethane plant will utilize vinasse and filter cake to generate renewable gas, strengthening the circular economy model in Brazil's agricultural heartland.

Biogas vs. Biomethane: Key Differences and Why They Matter for Brazil’s Clean Energy Future

Biogas and biomethane, are you familiar with them? They are not identical products, though their names are quite alike. Nonetheless, by these means the waste of daily life could be transformed into energy that is both clean and renewable.

In Brazil, organic waste is a problem that is often associated with environment. Yet this very material can turn out to be one of the major energy solutions of the country.

What Is Biogas?

Biogas is produced naturally when organic matter decomposes in environments without oxygen. This includes food scraps, animal manure, agricultural waste, vinasse from ethanol production, and the organic fraction of urban waste that ends up in landfills.

During decomposition, microorganisms break down this material and release biogas, a mixture primarily composed of carbon dioxide (CO₂) and methane (CH₄).

And here’s the key point:

Methane is a greenhouse gas about 25 times more powerful than CO₂.

If released into the atmosphere, it accelerates global warming. But when captured and treated, methane becomes a renewable energy source with significant environmental and economic value.

Today, biogas is widely used around the world to produce electricity, heat, and fuel. In Europe, industrial plants convert agricultural waste into energy capable of supplying entire communities.

Brazil’s Untapped Potential

With a strong agricultural sector and a high volume of urban waste, Brazil has one of the world’s largest potentials for biogas and biomethane production.

Because the country already has a predominantly clean electricity mix, the greatest opportunity lies in upgrading biogas to biomethane.

What Is Biomethane?

To produce biomethane, biogas undergoes purification. During this process, impurities are removed, humidity is eliminated, and CO₂ and nitrogen are separated.

The result is biomethane, a gas containing around 95% methane, with high calorific value and performance comparable to natural gas. In other words, a 100% renewable fuel capable of replacing fossil fuels in industry and transportation.

Biomethane can:

• Supply boilers, furnaces, burners, and other industrial equipment
• Fuel light and heavy vehicle fleets, including buses and trucks
• Reduce dependence on diesel and natural gas
• Lower emissions and improve energy efficiency
• Double Environmental Benefit
• Using biomethane offers two major environmental gains:
• It prevents methane from waste from reaching the atmosphere.
• It replaces fossil fuels, significantly reducing greenhouse gas emissions.

Replacing the diesel used by a single truck is comparable to planting more than 100 trees per year, showing how large-scale adoption can generate massive climate benefits.

Driving Local Development

Produced in Brazil, biomethane strengthens the local economy, creates green jobs, and stimulates new value chains. Every ton of CO₂ avoided contributes directly to national decarbonization and the global energy transition.

Biogas + Biomethane: A Circular Economy Solution

To sum up:

Biogas is generated from the decomposition of organic waste.

Biomethane is the upgraded, purified version of biogas, a high-efficiency, 100% renewable fuel capable of replacing fossil sources in industry and transportation.

This technology brings together circular economy principles, sustainability, and innovation, positioning Brazil as a global leader in clean energy.

Unioeste Boosts Renewable Energy Innovation in Western Paraná

Unioeste (Toledo campus) is emerging as a key research center for renewable energy in western Paraná, in the southern region of Brazil, a region dominated by agroindustry and high waste production. Led by professor Carlos Eduardo Borba, the university is developing advanced technologies to convert locally abundant biogas into biomethane and hydrogen, clean fuels essential for Brazil’s energy transition.

The team focuses on two core areas:

Biomethane production through selective adsorption that removes CO₂ and H₂S, creating a renewable fuel comparable to natural gas.

Hydrogen-rich syngas generation using dry reforming and shift reactions to transform methane and CO₂ into high-value industrial gases.

The research integrates major innovation networks such as NAPI-H2 and NAPI-Biogás and uses advanced mathematical models to determine the most efficient and economical use of biogas in each scenario.

These technologies help reduce methane emissions, convert agricultural waste into energy, and support cleaner transportation and industrial processes. Unioeste strengthens the regional circular economy by turning scientific research into real-world sustainable solutions.

Brazil’s Major Cities Pivot to Biomethane to Decarbonize Public Transport

Brazilian municipalities are accelerating the adoption of biomethane-powered buses as a strategic alternative to diesel, citing lower costs and easier infrastructure integration compared to electric vehicle (EV) programs.

In Londrina, the Municipal Transit and Urbanization Company (CMTU) launched a 30-day trial of a 100% biomethane-powered bus on nine urban routes. The vehicle, a Marcopolo Volare Fly 10, will be tested for performance, fuel autonomy, and passenger comfort. Mayor Tiago Amaral noted that the initiative aligns with a broader plan to transform urban waste into fuel, creating a circular economy that benefits both the environment and local industry.

"We are starting a study to transform waste into gas," Amaral said. "It is better for nature and provides a cheaper fuel for our fleets and industries."

The shift comes as city officials face mounting pressure from volatile global diesel prices and the technical hurdles of electrification. In São Paulo, South America’s largest metropolis, Mayor Ricardo Nunes indicated that biomethane is now a key pillar of the city's decarbonization goals. The move follows significant delays in the city’s electric bus rollout, which has been hampered by a lack of charging infrastructure and disputes with power utility Enel.

According to city estimates, replacing diesel with biomethane could halve the annual R$3 billion (approx. $530 million) operating costs of São Paulo’s bus fleet. The city plans to leverage biomethane produced at local landfills, such as the East Waste Treatment Center (CTL), which processes 7,000 tons of household waste daily.

Industry experts argue that biomethane offers a more immediate solution than electricity. Marcelo Mendonça, Technical-Commercial Director at the Brazilian Association of Piped Gas Distributors (Abegás), pointed out that over 90% of São Paulo’s bus garages are already within one kilometer of existing gas distribution networks.

"The gas infrastructure is already there to allow for immediate use," Mendonça said.

In the state of Goiás, the capital Goiânia has embarked on an even more ambitious "New Metropolitan Public Transport Network" (Nova RMTC). The program aims to deploy 500 biomethane buses by the end of next year, with an initial investment of R$569.2 million ($100 million) shared between state and local governments. While biomethane vehicles have roughly 10% less autonomy than diesel counterparts, the fuel is approximately 15% cheaper per unit, and the acquisition cost of the buses is three times lower than that of electric models.

To support the transition, the Goiás state government has implemented tax incentives, including ICMS tax credits of up to 90% for biomethane producers and distributors, further cementing the fuel's role in Brazil's energy transition.

Summary of Key Developments:

• Londrina: 30-day trial of biomethane buses on nine routes; focus on waste-to-energy circular economy.
• São Paulo: Biomethane adopted as a pragmatic alternative to stalled electric bus expansion; potential to cut fleet costs by 50%.
• Goiânia: Goal of 500 biomethane buses by late 2025; R$569 million investment supported by state tax incentives.
• Environmental Impact: Biomethane reduces CO2 emissions by up to 95% and nitrogen oxide (NOx) by 85% compared to diesel.

Energy Transition: Natura (NATU3) Embraces Biomethane Amidst Brazil's New Regulations

The new Brazilian rules for biomethane implementation which various industries now use as a replacement for natural gas fossil fuels will drive both energy transition progress and business carbon reduction activities.

The Brazilian federal government completed its biomethane policy regulations through the Fuel of the Future program in September 2025, which will enable the country to increase its renewable gas production for domestic use. The policy establishes an initial requirement for 1% biomethane blending in 2026, which can increase to 10% through future regulations that will apply to both natural gas producers and importers. 

Biomethane is a renewable energy produced from organic waste such as agricultural residues, food waste and animal manure. The materials are processed through anaerobic digestion, in which microorganisms break down organic matter in oxygen-free tanks, generating biogas composed mainly of methane and carbon dioxide. This biogas is then purified, or upgraded, to produce biomethane suitable for energy use.

It produces energy with the same efficiency as natural gas while emitting virtually no carbon emissions because its combustion emissions get canceled out by the carbon dioxide which plants capture during photosynthesis.

With this new regulatory framework, Brazil will establish yearly decarbonization benchmarks which will transform the country energy system by increasing renewable gas usage throughout transportation systems industrial operations and electricity production sectors.

One example of thar is the Brazilian cosmetics company Natura (NATU3) which opened a biomethane refueling station at its Cajamar industrial site located near São Paulo through its collaboration with Ultragaz. The project aims to cut logistics-related emissions, particularly Scope 3 emissions generated by outsourced transport operations.

The initiative operates 28 trucks that move goods between the Cajamar plant which generates 90 percent of Natura's domestic production and regional distribution centers using only biomethane as fuel. The fleet is operated by logistics companies Coopercarga and Reiterlog.

Natura plans to achieve a 42 percent reduction of its Scope 3 emissions by the year 2030. The biomethane system operates at a refueling rate of 2,000 cubic meters per hour. The company plans to receive returns on its investment within two years although it has not released specific investment amounts.

Ultragaz will supply 3.5 million cubic meters of biomethane per year to Natura, enough to power roughly 17,500 households. The project benefits the environment by decreasing the company carbon emissions which leads to lower business expenses according to Angela Pinhati who is the sustainability director at Natura.

The initiative has the potential to motivate companies to start investing in biomethane although the absence of a national distribution system which connects production areas to customers presents infrastructure problems.

The biomethane which Natura receives comes from the Caieiras landfill, which stands as the biggest landfill in Latin America because it receives organic material from the Cajamar waste processing center. The facility generates approximately 350,000 cubic meters of biomethane each day, with Ultragaz distributing 67,000 cubic meters of this total daily.

The current production of biomethane in São Paulo state results in 16% of its total output coming from landfills according to state authorities, which demonstrates how this fuel supports circular economy systems while helping to decrease greenhouse gas emissions throughout Brazil.

Brazil Expands Biomethane Trucks as Renewable Gas Production Surges

Brazil is rapidly expanding its biomethane-powered heavy-duty vehicle fleet and production capacity, positioning the renewable gas as a key component in its energy transition and transport decarbonization strategy.

Biomethane output in São Paulo state alone is projected to surge by 50% in 2026 with the launch of seven new biogas plants, according to industry projections. This expansion is bolstering Brazil's renewable natural gas (RNG) infrastructure and aims to reduce reliance on diesel in freight transportation.

Swedish manufacturer Scania, an early entrant, is now facing competition from Chinese automaker JAC Motors, which is introducing new gas-powered heavy trucks. Brazilian logistics firm Green Cargo plans to deploy between 150 and 200 biomethane trucks over the next 12 months, partnering with major corporations including JBS, Suzano, Veracel, and Eldorado for vehicle validation.

Volkswagen Caminhões e Ônibus is also contributing, with its new Constellation Biomethane model joining the fleet of EcoUrbis, a São Paulo waste management concessionaire. The vehicle, customized for solid waste collection, can cut CO2 emissions by up to 90% compared to diesel models, the manufacturer stated.

In a significant investment, Brazilian engine maker MWM and Vamos Group, a leading truck and machinery rental company, are jointly investing 150 million Brazilian reais ($30 million) in a project to convert diesel trucks to operate on biogas. Vamos plans to deliver the first 100 converted units to Rio de Janeiro's municipal sanitation company, Comlurb, in the first quarter.

Experts highlight biomethane's strategic role in energy security, as it is domestically produced from local waste streams, offering stability against geopolitical factors affecting fossil natural gas. Academic research is focusing on upgrading biogas to biomethane and integrating plants into circular bio-refineries, further supporting technological development and sustainability standards.

Strategic Benefits of Biomethane

• Energy Security: Biomethane is domestically produced from local waste, reducing dependence on imports and geopolitical factors
• Economic Impact: Stabilizes energy prices, supports rural development, and creates qualified jobs
• Environmental: Reduces nitrate pollution, minimizes odors, and provides biofertilizer from digestate

Scale Considerations: Medium-sized biomethane plants offer the optimal balance between efficiency and environmental management. Small plants in small cities sometimes lack technical expertise or lack of qualified professionals in Brazil, while very large facilities face logistical challenges.

Transportation Applications: Biomethane trucks reduce greenhouse gas emissions while maintaining performance comparable to diesel vehicles. When produced at scale, biomethane can be price-competitive with fossil natural gas.

Brazil's Strategy

As Brazil expands biomethane production, renewable gas is becoming central to the country's decarbonization strategy, connecting waste management, energy independence, and sustainable freight transport.

Brazil and Biomethane: Renewable Gas Gains Strategic Ground as Minas Gerais Advances Regulation and Industry Scales Up

Brazil's biomethane industry is poised for significant growth, driven by increasing decarbonization pressures and recent regulatory advancements, particularly in the state of Minas Gerais. The renewable gas, produced from organic waste, is emerging as a strategic asset in the country's industrial decarbonization efforts, offering a pragmatic solution for sectors heavily reliant on fossil natural gas.

Biomethane's compatibility with existing gas infrastructure presents a decisive advantage for hard-to-electrify industries such as ceramics, glass, food processing, paper, and chemicals, allowing them to cut emissions without immediate equipment replacement.

Several factors are accelerating the biomethane market in Brazil, including growing pressure for decarbonization targets, rising demand for circular economy solutions, energy security concerns, and the volatility and higher costs of fossil gas. Unlike other clean energy alternatives, biomethane can often be injected directly into existing gas grids, reducing transition costs and operational disruption.

Brazil possesses significant structural advantages for biomethane production, combining large-scale agribusiness, a robust sugarcane industry, extensive urban waste generation, and an expanding gas market. Feedstocks like vinasse, filter cake from sugar-energy operations, livestock waste, industrial effluents, and municipal solid waste offer substantial technical potential, though current production remains below estimated capacity.

Despite a growing pipeline of projects, the sector faces challenges, including limited connection to gas distribution networks in some producing regions, high upgrading and purification costs for small-scale plants, and the need for long-term supply contracts to ensure price predictability. Regulatory fragmentation at the state level also poses a hurdle, risking isolated development rather than systemic scale.

A major step forward occurred on February 9, 2026, with the publication of Decree No. 49,172 by the Minas Gerais government. This regulation establishes operational guidelines for biogas, biomethane, and low-carbon hydrogen policies, alongside rules for sharing and integrating gas infrastructure. The decree implements State Laws 24,396/2023 and 24,940/2024, providing clearer frameworks for licensing, commercialization, certification, environmental standards, and economic incentives.

Minas Gerais currently boasts 453 million Nm³ per year of installed biogas capacity across 359 operational facilities, representing approximately 10% of national production. In 2025, the state inaugurated its first biomethane plant, operated by Zeg Biogás in Tupaciguara, with an investment of BRL 78.6 million. Two additional biomethane units are under authorization in Sabará, with a combined capacity of 108,000 Nm³ per day.

The decree also advances low-carbon hydrogen policy, detailing technical standards, certification mechanisms, and economic incentives to expand hydrogen's role in heavy industry, mobility, and energy storage.

Industrial investment is also expanding. MAT, a Brazilian manufacturer of gas cylinders and trailers, reported record revenues exceeding BRL 30 million last year from compression systems and accessories. Approximately 70% of the equipment sold in 2025 was for biomethane compression, storage, and transport. According to data from the International Center for Renewable Energy (CIBiogás), Brazil had 79 biomethane plants in 2025 (54 operational, 25 under implementation), with biomethane supply expanding 107% during the year.

MAT is now considering local production of compressors, currently imported from Italy, which could facilitate financing through Brazil’s Finame machinery credit program.

Biomethane's appeal in Brazil rests on three strategic pillars: immediate emissions reductions using available technology, valorization of environmental liabilities through waste recovery, and lower operational disruption compared to alternative decarbonization pathways. If infrastructure gaps and regulatory harmonization challenges are addressed, Brazil could become a global leader in renewable gas production. The market's maturation speed will be crucial, but the convergence of industrial competitiveness, circular economy, and energy transition suggests that renewable gas is moving to the core of Brazil’s low-carbon strategy.

Biomethane: Production and Applications

Biomethane (also referred to as renewable natural gas or RNG) is a sustainable, high-energy biofuel derived from the purification of biogas. Chemically nearly identical to conventional natural gas, it consists primarily of methane (CH₄) with a concentration typically exceeding 90–95%. As a renewable energy source, biomethane plays a pivotal role in the global transition toward a circular economy and the decarbonization of energy matrices, particularly in sectors such as heavy transportation and industrial manufacturing.

Production Process

The generation of biomethane is a multi-stage industrial process that begins with the production of raw biogas and concludes with advanced refining techniques.

Anaerobic Digestion

The primary source of biomethane is biogas, which is produced through the anaerobic digestion (decomposition in the absence of oxygen) of organic matter. Common feedstocks include:

• Agricultural Residues: Livestock manure and crop remains;
• Urban Waste: Organic fractions of municipal solid waste and sewage sludge;
• Industrial Byproducts: Waste from food and beverage processing.

This decomposition typically occurs in controlled environments known as biodigesters or naturally within sanitary landfills. Raw biogas generally contains 50–70% methane, with the remainder being carbon dioxide (CO₂) and trace amounts of nitrogen, hydrogen sulfide (H₂S), and moisture.

Purification and Upgrading

To transform biogas into biomethane, it must undergo a process known as upgrading. This involves three critical removal steps:

1. Desulfurization: The removal of hydrogen sulfide (H₂S) to prevent corrosion of metallic components and engines.
2. Dehumidification: The elimination of moisture (water vapor) to ensure stable combustion and prevent internal freezing or corrosion.
3. CO₂ Separation: The extraction of carbon dioxide to increase the energy density (calorific value) of the gas.

Various technologies are employed for CO₂ separation, including membrane separation, water scrubbing, and pressure swing adsorption (PSA). Once the methane concentration meets regulatory standards — such as those set by the National Agency of Petroleum, Natural Gas and Biofuels (ANP) in Brazil — the gas is classified as biomethane.

Economic and Environmental Significance

Biomethane is distinguished from other renewables by its interchangeability with fossil-derived natural gas. This allows it to utilize existing infrastructure, such as pipelines and Compressed Natural Gas (CNG) vehicles, without requiring specialized modifications.

Environmental Impact

By capturing methane — a potent greenhouse gas — from organic waste that would otherwise decompose in the open, biomethane production significantly reduces atmospheric pollution. When used as a substitute for diesel or gasoline, it can reduce greenhouse gas emissions by up to 99%. Furthermore, the byproduct of the digestion process, known as digestate, serves as a high-quality organic fertilizer, closing the nutrient loop in agricultural systems.

Energy Security and Circular Economy

Unlike fossil fuels, biomethane is produced locally from domestic waste streams, shielding national economies from international oil price volatility and exchange rate fluctuations. It embodies the principles of the circular economy by transforming an environmental liability (waste) into a strategic energy asset.

Market Outlook and Challenges

The adoption of biomethane is accelerating globally, supported by legislative frameworks such as "Future Fuel" mandates that require major gas importers and producers to integrate renewable molecules into their portfolios. However, several challenges persist:

• Complexity and Scale: Biomethane plants require higher capital investment (CAPEX) and operational expertise compared to simple electricity generation from biogas;
• Regulatory Compliance: Meeting stringent purity standards for injection into national grids requires continuous monitoring and sophisticated instrumentation, such as online chromatographs;
• Contractual Rigidity: Due to the necessity of constant supply for industrial clients, "take-or-pay" or "delivery-or-pay" contracts are common, increasing the legal and financial complexity for project developers.

As technology matures and carbon markets expand, biomethane is expected to remain a cornerstone of sustainable development, providing a versatile bridge to a low-carbon future.