Sustainable Aviation
Acelen Renewables $1.5B Biorefinery Project in Bahia Brazil
Acelen Renewables invests $1.5B in Bahia biorefinery to produce sustainable aviation fuel and renewable diesel using macaúba palm by 2029.

This article is based on an official press release from Acelen Renewables and supplementary market research.
Acelen Renewables, the renewable energy arm of Abu Dhabi’s sovereign wealth fund Mubadala Capital, has officially announced a US$ 1.5 billion investment to construct a large-scale renewable fuels biorefinery in Bahia, Brazil. Announced on Thursday, May 21, the project marks a significant milestone in the global energy transition and positions Brazil as a central hub for low-carbon Electric-Aviation and transport fuels.
According to the company’s press release, the facility is scheduled to begin commercial operations in 2029. Once online, the plant will have the capacity to produce 1 billion liters, approximately 20,000 barrels per day, of Sustainable Aviation Fuel (SAF) and renewable diesel (HVO) annually. The facility will be located in São Francisco do Conde, Bahia, adjacent to the existing Mataripe Refinery.
The project is backed by a historic consortium of 12 national and international financial institutions, signaling strong global market confidence in Brazil’s capacity to deliver competitive, large-scale climate solutions.
Project Scope and Financial Structure
A Landmark Consortium
The US$ 1.5 billion investment specifically covers the construction phase of the biorefinery, though supplementary research indicates the total investment for this first integrated unit, including a 10-year agro-industrial development plan, will exceed US$ 3 billion. According to project data, the capital stack consists of US$ 650 million in equity provided by Mubadala Capital, with the remaining US$ 850 million financed through a 5.5-year project finance debt structure.
As detailed in the company’s announcement, the syndicated loan is supported and led by the International Finance Corporation (IFC) and HSBC. The broader consortium includes a diverse array of global lenders: First Abu Dhabi Bank (FAB), Abu Dhabi Commercial Bank (ADCB), IDB Invest, the Brazilian Development Bank (BNDES), Asian Infrastructure Investment Bank (AIIB), FinDev Canada, KfW IPEX-Bank, Bradesco, BBVA, and Bank of China.
“We believe that transformative projects require long-term vision, international cooperation, and a commitment to lasting positive impact.”
Technological and Agricultural Innovation
HEFA Technology and the Macaúba Advantage
The Bahia plant will utilize Hydroprocessed Esters and Fatty Acids (HEFA) technology, which is currently the most proven and widely adopted pathway for renewable fuel production globally. While the facility will initially be flexible enough to process feedstocks like soybean oil and Used Cooking Oil (UCO), the project’s long-term strategic differentiator is the cultivation of macaúba, a native Brazilian palm tree.
Research reports highlight that macaúba yields up to 10 times more oil per hectare than traditional soybeans. Acelen Renewables plans to plant 180,000 hectares of this native palm exclusively on degraded pasturelands across Bahia and Minas Gerais. This approach is designed to regenerate soil health without competing with food production.
Breakthroughs in Agritech
The commercial viability of macaúba is the result of significant agricultural research and development. Historically, macaúba seeds exhibited a natural germination rate of only 3% to 5%. Through the Acelen Agripark, a US$ 60 million (R$ 314 million) innovation center, and Partnerships with institutions like Embrapa, the company developed protocols that achieved up to an 80% germination rate. This scientific milestone unlocks the potential for commercial-scale cultivation of the plant.
Global Export Strategy and Socioeconomic Impact
De-risking Through Off-take Agreements
Despite pending domestic SAF regulations in Brazil, Acelen Renewables has commercially de-risked the project by looking outward. Market data reveals that 90% of the facility’s future production is already contracted to clients in the United States and Europe. Because SAF and HVO are “drop-in” fuels, they require no modifications to existing aircraft or heavy transport engines, making them highly sought after in markets with strict emission reduction mandates.
Local Regeneration and Job Creation
The environmental and social impacts of the project extend well beyond fuel production. SAF and HVO reduce CO2 emissions by up to 80% compared to traditional fossil fuels. Furthermore, because the cultivation of macaúba captures carbon in degraded soils, Acelen projects the overall lifecycle of the fuel to be “net-negative” in carbon emissions.
On the socioeconomic front, the company has integrated social inclusion into its supply chain. Through its “Programa Valoriza,” 20% of the macaúba supply will be sourced via partnerships with family farmers and small producers, providing a new economic lifeline for communities in semi-arid regions. The broader integrated project is expected to generate up to 90,000 direct and indirect jobs over the coming years.
AirPro News analysis
We view Acelen Renewables’ final Investments decision as a watershed moment for the Latin American biofuels sector. By securing 90% of its off-take agreements in the US and Europe, Mubadala Capital successfully bypassed the regulatory waiting game regarding Brazil’s domestic SAF mandates. This export-driven Strategy allowed the consortium to confidently deploy US$ 1.5 billion in capital today.
Furthermore, the domestication of the macaúba plant represents a critical leap in sustainable feedstock supply. The jump from a 3% to an 80% germination rate is a prime example of how targeted agritech investments can unlock massive energy transition bottlenecks. If Acelen successfully executes this first facility, it paves the way for its broader vision: a total of five biorefineries in Brazil with an estimated cumulative investment of US$ 12.5 billion.
Frequently Asked Questions
What is SAF?
Sustainable-Aviation Fuel (SAF) is a liquid fuel currently used in commercial aviation which reduces CO2 emissions by up to 80%. It can be produced from a number of sources (feedstock) including waste oil and agricultural residues.
When will the Acelen Renewables biorefinery open?
Construction is expected to take approximately two and a half years, with commercial operations scheduled to begin in 2029.
Why is macaúba important to this project?
Macaúba is a native Brazilian palm that produces up to 10 times more oil per hectare than soybeans. It can be grown on degraded pasturelands, meaning it does not compete with food crops while simultaneously helping to regenerate the soil and capture carbon.
Sources
Photo Credit: Acelen Renewables
Sustainable Aviation
Airbus Safran Technip Tereos Launch SAF Joint Venture France
Four European firms form Rebound JV to produce 160,000 tons of SAF annually at Dunkirk using Alcohol-to-Jet technology.

Four major European aerospace and energy companies announced an agreement on June 9, 2026, to establish a joint venture aimed at producing 160,000 tons of Sustainable Aviation Fuel (SAF) annually in Northern France. The partnership between Technip Energies, Airbus, Safran, and Tereos will create a new entity named Rebound, focusing on the Alcohol-to-Jet (AtJ) production pathway at the Port of Dunkirk.
According to a press release issued by Airbus, the initiative is designed to secure localized production of advanced ethanol from agricultural and forestry residues. The facility aims to address the European Union (EU) ReFuelEU Aviation regulation, which mandates a 6 percent SAF blending target by 2030 and a 70 percent target by 2050.
Scaling Alcohol-to-Jet technology
The Rebound facility is projected to be one of the largest SAF plants in Europe, targeting an annual output of 160,000 tons. The project covers the entire value chain, from securing agricultural feedstock to delivering the final aviation fuel to operators. The joint venture is expected to be finalized in the second half of 2026, subject to customary closing conditions and regulatory approvals.
Technip Energies Chief Strategy and Sustainability Officer Benjamin Lechuga described the AtJ pathway as a credible and scalable route to decarbonize the aviation sector. Tereos Chief Strategy Officer Jérôme Bos noted that the project aligns with efforts to create low-carbon industrial value chains utilizing agricultural production.
Regulatory mandates and European energy sovereignty
The regulatory framework established by the EU is expected to drive an eightfold increase in SAF demand between 2030 and 2050. In response to these requirements and global headwinds facing renewable energy, the Rebound joint venture is explicitly framed around strengthening European energy supply security and sovereignty.
“The Rebound project is a vote of confidence in SAF and in Europe’s ability to be a leader in the journey to decarbonise aviation,” stated Julie Kitcher, Chief Sustainability Officer and Communications at Airbus.
Safran Chief Sustainability Officer Nathalie Stubler added that developing SAF at scale is essential for the industry and that the project brings together necessary French and European expertise to support a competitive domestic fuel market.
AirPro News analysis
We view the formation of the Rebound joint venture as a direct industrial response to the aggressive timelines set by the ReFuelEU Aviation mandate. While aerospace manufacturers like Airbus and Safran do not traditionally produce fuel, their direct investment in the Rebound project highlights the critical bottleneck that SAF supply presents to their long-term decarbonization commitments. By partnering with energy and agricultural specialists like Technip Energies and Tereos, the aerospace sector is attempting to vertically integrate the SAF supply chain to ensure the 2030 and 2050 blending targets remain viable. The choice of the Alcohol-to-Jet pathway also indicates a strategic pivot toward mature, scalable technologies that can utilize existing European agricultural infrastructure without waiting for next-generation synthetic fuel pathways to mature.
Sources: Airbus
Photo Credit: Airbus
Sustainable Aviation
KLM Cityhopper Flies Hamburg on 5% Synthetic Kerosene Blend
KLM Cityhopper completed a commercial e-SAF flight to Hamburg on June 8, 2026, highlighting supply and cost barriers ahead of EU mandates.

KLM Cityhopper operated the first commercial passenger flight to Germany utilizing a 5 percent blend of synthetic kerosene on June 8, 2026, demonstrating the technical viability of power-to-liquid fuels while exposing severe supply constraints ahead of upcoming European mandates.
The flight traveled from Amsterdam Airport Schiphol (AMS) to Hamburg Airport (HAM). According to a press release issued by KLM Royal Dutch Airlines, the operation was a collaborative effort involving synthetic fuel producer INERATEC, blending partner MB Energy, and the destination Airports.
Advancing power-to-liquid aviation fuels
The aircraft was refueled at Schiphol with 200 liters of synthetic kerosene, commonly referred to as e-SAF. This volume constituted a 5 percent blend with conventional fossil kerosene. INERATEC manufactured the synthetic fuel, while MB Energy managed the blending process prior to refueling.
Synthetic kerosene offers a potential lifecycle emissions reduction of more than 90 percent compared to traditional fossil fuels. The power-to-liquid process utilizes renewable electricity to combine hydrogen and captured carbon dioxide into a drop-in aviation fuel.
INERATEC Co-founder and CEO Tim Boeltken emphasized the immediate readiness of the technology following the successful operation.
“We are ready to deliver. Today’s flight, with our Chief Commercial Officer Maximilian Backhaus on board during a regular passenger service, clearly shows that power-to-liquid fuels are safe, available, and already operationally viable today. This is just the beginning of many applications we will see this year across various sectors,” Boeltken stated.
Scaling challenges and European mandates
While the Hamburg flight proved the operational concept, KLM used the milestone to highlight the stark economic and logistical hurdles facing the industry. The European Union has established a sub-target mandate requiring a 1.2 percent e-SAF blend across the aviation sector by 2030.
Currently, synthetic kerosene production remains highly constrained. The financial barriers are equally significant. KLM reported that e-SAF currently costs four times as much as standard Sustainable Aviation Fuel (SAF) and eight times as much as conventional fossil kerosene.
KLM Royal Dutch Airlines CEO Marjan Rintel, who also chairs Project SkyPower, noted the discrepancy between regulatory goals and industrial reality.
“As CEO of KLM and chair of Project SkyPower, I believe e-SAF can make a real difference in making aviation more sustainable. KLM already pioneered a passenger flight on e-SAF in 2021, from Amsterdam to Madrid. Today’s flight to Hamburg once again shows that flying on synthetic kerosene is technically possible. But the reality is that the availability of e-SAF lags far behind ambition,” Rintel said.
AirPro News analysis
The most telling metric from the June 8 operation is not the successful flight itself, but the volume of synthetic fuel utilized. In 2021, KLM pioneered its first commercial e-SAF flight from Amsterdam to Madrid using 500 liters of synthetic kerosene. Five years later, the Hamburg flight utilized only 200 liters.
This 60 percent reduction in available test volume over a half-decade underscores the severe scalability crisis facing power-to-liquid fuels. We view the 2030 European Union mandate of a 1.2 percent e-SAF blend as highly vulnerable to supply chain realities. If a major flag carrier like KLM is explicitly highlighting the fact that current production is only a fraction of what is required, regulators may eventually be forced to reevaluate the timeline or heavily subsidize production to bridge the eight-fold cost gap with fossil fuels.
Sources: KLM Royal Dutch Airlines
Photo Credit: KLM Royal Dutch Airlines
Sustainable Aviation
American Airlines and Google Sign 35M-Gallon SAF Deal
American Airlines and Google agree to purchase 35 million gallons of SAF certificates, cutting nearly 300,000 metric tons of CO2e.

American Airlines Group Inc. (AAL) and Google have signed an agreement to purchase 35 million gallons of sustainable aviation fuel certificates over the next three years, marking the largest publicly announced transaction of its kind between an Airlines and a single corporate customer.
Announced on June 9, 2026, the partnership will facilitate the delivery of physical sustainable aviation fuel (SAF) to Chicago O’Hare International Airport (ORD) via Valero Marketing and Supply Company. The agreement is projected to reduce greenhouse gas emissions by nearly 300,000 metric tons of carbon dioxide equivalent (CO2e), allowing Google to offset the environmental impact of its employee business travel.
Scaling sustainable aviation fuel
The sustainable aviation fuel certificates (SAFc) model allows corporate customers to claim the environmental benefits of the fuel even if they do not physically consume it on their specific flights. Google will utilize the SAFc Registry to apply these emissions reductions against its corporate travel footprint.
“This strategic collaboration with American Airlines demonstrates how companies can work together to scale critical sustainability technologies. By entering into this long-term commitment, we are sending a vital demand signal to catalyze investment and bring more SAF to market,” said Kate Brandt, Chief Sustainability Officer at Google.
American Airlines stated the agreement is a critical step in reducing operational emissions and growing market demand for SAF. According to the airline, the aviation industry currently accounts for 2 to 3 percent of global carbon dioxide emissions. Google noted that SAF has the potential to reduce air travel emissions by up to 80 percent compared to traditional jet fuel.
Legislative incentives and prior collaborations
The transaction was facilitated by a recently enacted sustainable aviation fuel tax credit passed by the Illinois General Assembly. The legislation is designed to incentivize the delivery and utilization of SAF within the state.
“This agreement demonstrates how our nation-leading SAF tax credit can bring industry leaders together as we work toward a more sustainable future. Through partnerships with innovators like American Airlines and Google, we’re strengthening Illinois’ role as a global aviation hub and accelerating the transition to cleaner energy,” said Illinois Governor JB Pritzker.
This SAFc agreement follows a 16-week pilot program conducted by American Airlines and Google in 2025. That initiative, which also included Flightkeys and Contrails.org, embedded contrail avoidance models into flight planning and reportedly achieved a 62 percent reduction in contrail formation.
AirPro News analysis
We view this 35-million-gallon agreement as a significant indicator of how corporate sustainability budgets are increasingly subsidizing the premium cost of SAF. While 35 million gallons over three years represents a fraction of American Airlines’ total annual fuel consumption, long-term offtake agreements are essential for producers like Valero to secure financing for expanded refining capacity. The use of the SAFc Registry also highlights the growing maturation of the book-and-claim model, which decouples the environmental attributes of SAF from the physical fuel, solving logistical bottlenecks at airports that lack the infrastructure to receive blended SAF directly.
Sources: American Airlines
Photo Credit: American Airlines
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