Scaling Up Biofuels: Which Fuel Types Are Attracting the Most Investment in 2026

Investment in biofuels is accelerating in 2026 as governments, airlines, energy companies and institutional investors increase funding for lower-carbon transportation fuels. Capital is concentrating on fuel types with the strongest commercial potential, particularly sustainable aviation fuel (SAF), renewable diesel, biodiesel and biogas. Beyond reflecting sustainability goals, these trends also reveal which technologies are approaching commercial maturity and where future investment is likely to concentrate.

Why Biofuels Are Drawing More Investment Than Traditional Fuels

Investment is increasingly shifting toward biofuels because they offer a practical path to lowering transportation emissions without requiring an immediate overhaul of existing fuel infrastructure. Unlike conventional fossil fuels, many biofuels can blend with or directly replace petroleum-based fuels, helping industries reduce carbon emissions while continuing to use current engines, pipelines and fueling systems.

Government policy is another major driver of investor confidence. The Organization for Economic Co-operation and Development (OECD) and the Food and Agriculture Organization (FAO) Agricultural Outlook 2026-2035 projects that global biofuel demand will increase by 1.4% annually over the next decade, supported by blending mandates, energy security initiatives and emissions-reduction goals.

At the same time, production in middle-income countries is expected to grow by 3% per year, led by Brazil, Indonesia and India as they expand renewable fuel capacity to meet rising transport demand. These long-term policy commitments create more predictable markets, making biofuels a more attractive investment than traditional fuels, whose growth prospects are increasingly constrained by decarbonization efforts and evolving energy policies.

SAF Leads Investment Activity

SAF has become a major focus for investment as the aviation industry works to reduce emissions while strengthening long-term fuel security. Unlike many other sectors, aviation has few practical alternatives to liquid fuels for medium- and long-haul flights. Battery-electric aircraft are currently limited to very short-range applications, while hydrogen-powered commercial aircraft remain years away from widespread use.

Because SAF is compatible with existing aircraft and can blend with conventional jet fuel, it can integrate into today’s aviation infrastructure without requiring new aircraft or airport fueling systems. As a result, industry efforts have increasingly shifted toward expanding production capacity and supply chains to support broader adoption.

Governments are strengthening policy incentives, while energy companies, institutional investors and airlines continue financing new production capacity. Long-term purchase agreements also provide producers with greater revenue certainty and support future expansion. The Philippines, for example, recently added SAF production to its strategic priorities, making qualifying projects eligible for additional incentives.

Another factor attracting investment is feedstock flexibility. Because SAF can be produced from a variety of renewable materials, including used cooking oil, agricultural residues, forestry waste and municipal solid waste, producers have more sourcing options and are less dependent on a single raw material.

Production costs remain higher than those of conventional jet fuel, but investment continues to support new production facilities, infrastructure and technology development to expand SAF availability.

Renewable Diesel and Biodiesel Continue to Expand

Renewable diesel and biodiesel remain among the most mature segments of the biofuels industry. Both fuels are commonly produced from vegetable oils, animal fats and recycled cooking oil, but they differ in their manufacturing processes and performance.

Biodiesel is produced through transesterification and is commonly blended with petroleum diesel for use in many diesel engines. Renewable diesel is made via a hydrogenation process and is chemically equivalent to petroleum diesel, allowing it to be used as a drop-in fuel, transported through existing petroleum pipelines and sold with or without blending.

Renewable diesel is especially attractive for trucking fleets, construction equipment and commercial transportation operators seeking lower-carbon fuel without modifying existing engines. Investment has increasingly focused on expanding renewable diesel production capacity because the fuel can be distributed through much of the existing diesel supply chain.

Biodiesel vs. Conventional Diesel

Conventional diesel is refined directly from crude oil and has long been the primary fuel for heavy-duty transportation. Biodiesel, by comparison, is made from renewable biological feedstocks such as soybean oil, canola oil, palm oil, used cooking oil or animal fats.

While biodiesel generally produces lower life cycle greenhouse gas emissions, it may have slightly lower energy content than petroleum diesel, which can lead to modest decreases in fuel economy depending on the blend ratio. Many diesel engines can safely operate using approved biodiesel blends, making adoption relatively straightforward.

Can Biodiesel Be Stored for Long Periods?

Biodiesel can be stored for extended periods, but it generally requires more careful management than conventional diesel. Because it is more susceptible to oxidation and moisture absorption, fuel quality can decline over time when exposed to air, water or excessive heat.

Long-term storage can also reduce biodiesel’s oxidation stability, potentially leading to deposits, sediment and other insoluble materials. These contaminants may clog filters and affect fuel system performance if the fuel is not properly maintained. Regular monitoring, clean storage tanks, limited exposure to contaminants and proper inventory rotation can help preserve biodiesel quality during storage.

Biogas Gains Momentum Through Circular Economy Projects

Biogas and biomethane continue attracting significant investment because they combine renewable energy production with waste management.

Produced from food waste, agricultural residues, livestock manure and wastewater treatment facilities, biogas transforms organic waste into usable fuel while reducing methane emissions that would otherwise escape into the atmosphere. Many investors view this as a compelling business model because projects generate value from materials that previously represented disposal costs.

Sustainable agricultural practices are also improving resource efficiency by creating new uses for organic waste. For example, research suggests that oils, fats and grease recovered from food waste could produce around 1.7 billion gallons of biodiesel, demonstrating the significant renewable fuel potential of materials that would otherwise be discarded.

Biomethane can be upgraded for pipeline injection or transportation use after treatment removes impurities from raw biogas. The U.S. Energy Information Administration notes that treated renewable natural gas contains at least 90% methane and can be injected into natural gas pipelines or used in vehicles.

This compatibility supports biogas investment. As a result, investment continues flowing into projects that expand renewable natural gas production while making use of existing pipeline infrastructure.

What Makes These Fuel Types Attractive?

Several common characteristics explain why these fuel types continue attracting investment ahead of newer technologies:

• Flexible feedstocks: Access to agricultural residues, used cooking oil, forestry waste and other renewable materials gives producers more sourcing options, helping reduce supply risk while supporting regional production.
• Commercial readiness: Renewable diesel, biodiesel and many biogas technologies already operate at commercial scale, giving investors greater confidence than technologies that remain in earlier stages of development.
• Supportive policies: Blending mandates, renewable fuel standards and production incentives continue creating stable demand, with the OECD-FAO identifying government policy as a key driver of biofuel market growth.
• Infrastructure compatibility: Many biofuels can be transported, stored and distributed through existing fuel infrastructure or used in current vehicles and equipment with few modifications.

What Current Investment Trends Reveal

Investment trends in 2026 point to a growing divide between commercially mature and emerging biofuel technologies. SAF, renewable diesel, biodiesel and biogas continue attracting investment because of supportive policies and scalable production. More advanced biofuels remain promising but face higher costs and greater challenges before reaching widespread commercial deployment.