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Taxibots Cut Airport Emissions Through Hybrid-Electric Ground Operations

Airbus-led Project HERON advances hybrid-electric Taxibots for sustainable airport taxiing, with trials at Schiphol and CDG targeting 50% fuel reduction.

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Taxibots and Project HERON: Pioneering Sustainable Ground Operations in Aviation

As the aviation industry intensifies its efforts to reduce environmental impact, innovations like the Taxibot are gaining prominence. These hybrid-electric, pilot-controlled tugs are designed to tow aircraft between gates and runways without the need to power up the aircraft’s engines. This advancement not only reduces fuel consumption but also cuts down on emissions and noise pollution, addressing some of the most pressing sustainability challenges in airport ground operations.

At the heart of this innovation is Project HERON (Highly Efficient gReen OperatioNs), a European initiative coordinated by Airbus and supported by 24 partners across 10 countries. As HERON nears its conclusion in October 2025, the focus is shifting from development to deployment, with Taxibots undergoing trials at major international airports. The project aligns with broader goals under the Single European Sky ATM Research (SESAR) Joint Undertaking to modernize air traffic management and reduce aviation’s environmental footprint.

How Taxibots Work and Why They Matter

The Taxibot system represents a significant shift in how aircraft are maneuvered on the ground. Rather than using their engines, which consume substantial amounts of fuel and emit pollutants even during short taxiing phases, aircraft are towed by a hybrid-electric tug. This approach minimizes unnecessary fuel burn and associated emissions, offering both environmental and economic benefits.

Technically, the Taxibot attaches to the aircraft’s nose landing gear, lifting the nose wheel onto a pivotable platform. Once connected, the pilot uses the aircraft’s tiller and brakes to steer, while the tug provides the propulsion. The aircraft engines are only activated just before takeoff, significantly reducing the time they are running on the ground. The system requires minor modifications to the aircraft’s avionics, which are already certified and available for Airbus single-aisle aircraft.

Airports like Amsterdam Schiphol, New York JFK, New Delhi, Paris Charles de Gaulle, and Brussels are participating in ongoing trials. Schiphol, in particular, is a key testbed due to its long taxi distances and its goal to become an emissions-free airport by 2030. Schiphol’s internal studies suggest that widespread use of Taxibots could reduce ground fuel consumption by 50%, with potential savings of up to 85% for longer taxi legs.

“Airports are actively pursuing solutions to reduce CO₂ emissions from ground operations, which is in line with the broader initiatives of HERON.”, Benjamin Tessier, HERON Coordinator and Vehicle Systems Architect at Airbus

From Prototype to Deployment

The journey of the Taxibot began with Israel Aerospace Industries (IAI), which holds the trademark. In 2009, IAI partnered with TLD, a French manufacturer of airport ground support equipment, to produce the prototype in France. Since then, the technology has undergone significant refinement, culminating in its integration into Airbus’s sustainability and innovation portfolios.

Today, the Taxibot is certified for use with Airbus single-aisle aircraft and is available as a retrofit kit. Airlines like easyJet are preparing for trials, with Schiphol Airport as a key location due to its infrastructure and sustainability goals. The trials are not only technical tests but also operational experiments aimed at understanding how best to integrate the system into daily airport routines.

Efforts are underway to train pilots in using the Taxibot system effectively. Since pilots control the tug during taxiing, familiarity with the system is essential for safety and efficiency. Additionally, airport infrastructure is being adapted to facilitate the connection and disconnection of the tugs, minimizing delays and ensuring smooth operations.

HERON’s Broader Impact and Future Developments

Project HERON is more than just about Taxibots. It encompasses a suite of innovations aimed at optimizing both ground and air operations. These include advanced air traffic control tools that support ADS-C EPP standards for trajectory-based operations, single-engine taxiing procedures, and improved runway management techniques to reduce emissions and noise.

HERON’s consortium includes major stakeholders in the aviation ecosystem such as Aéroports de Paris, Air France, Brussels Airport Company, EUROCONTROL, Leonardo, Lufthansa, and Schiphol Airport. This collaborative approach ensures that innovations like the Taxibot are developed with input from all sectors of the industry, increasing the likelihood of successful adoption.

Looking ahead, Airbus and its partners plan to introduce a fully electric version of the Taxibot by 2026. A widebody version is also under development, which would extend the benefits of the technology to larger aircraft. These advancements support broader industry goals for decarbonization and align with regulatory trends pushing for reduced airport emissions.

Economic and Environmental Considerations

While specific cost data for the Taxibot system is limited, the economic rationale is compelling. Reduced fuel consumption translates into lower operating costs for airlines, especially in the context of volatile fuel prices and increasing carbon taxation. Additionally, quieter ground operations may reduce noise-related restrictions and improve relations with communities near airports.

Environmental benefits are equally significant. By reducing CO₂ and NOₓ emissions during taxiing, the Taxibot contributes to improved air quality around airports. This is particularly important for urban airports where pollution levels are closely monitored and regulated.

Moreover, the technology supports airlines in meeting their own sustainability targets. As environmental reporting and compliance become more stringent, tools like the Taxibot offer measurable ways to reduce emissions and showcase commitment to green aviation.

Conclusion

The Taxibot is a notable example of how targeted innovation can address specific pain points in the aviation ecosystem. By eliminating the need for engine-powered taxiing, it offers a practical solution to reduce emissions, fuel consumption, and noise pollution on the ground. As Project HERON concludes, the groundwork has been laid for broader adoption of this technology.

With trials underway at major airports and plans for future versions already in motion, the Taxibot could become a standard feature of sustainable airport operations. Its development and deployment reflect a growing industry consensus around the need for decarbonization and operational efficiency, positioning the technology as a key player in aviation’s green transition.

FAQ

What is a Taxibot?
A Taxibot is a hybrid-electric, pilot-controlled ground tug that tows aircraft between gates and runways without the aircraft engines running.

How does the Taxibot reduce emissions?
By towing the aircraft without using its engines, the Taxibot significantly lowers CO₂ and NOₓ emissions and reduces noise pollution during taxiing.

Where is the Taxibot currently being tested?
Trials are ongoing at Amsterdam Schiphol, New York JFK, New Delhi, Paris Charles de Gaulle, and Brussels airports.

Is the Taxibot certified for use?
Yes, the necessary modifications for Airbus single-aisle aircraft are certified and available as retrofit kits.

What’s next for the Taxibot?
A fully electric version and a widebody-compatible model are under development, with broader adoption expected post-2025.

Sources: Airbus, SESAR Joint Undertaking, Amsterdam Schiphol Airport, Israel Aerospace Industries, TLD Group

Photo Credit: Airbus

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Sustainable Aviation

Cathay Pacific and Google Expand AI Contrail Avoidance Program

Cathay Pacific and Google scale AI contrail avoidance to long-haul routes after trials cut warming impact by 40 percent.

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Cathay Pacific Airways (CX) and Google announced an expanded partnerships on September 7, 2026, to scale artificial intelligence-driven contrail avoidance technology across the airline’s ultra-long-haul network. Following initial trials that reduced the climate impact of condensation trails by approximately 40 percent, the initiative will now cover transpacific, polar, and Asia-Pacific routes.

In a press release issued by the Hong Kong-based carrier, Cathay Pacific detailed how the system integrates Google’s AI predictions, satellite imagery, and weather data directly into the pilots’ Electronic Flight Folder. Developed in collaboration with the non-governmental organization Contrails.org, the technology allows flight crews to make minor altitude adjustments to avoid atmospheric zones prone to contrail formation. Contrails are responsible for roughly 35 percent of the aviation industry’s total global warming impact.

Scaling AI for climate mitigation

The decision to expand the program follows a testing phase initiated in late 2025. During that period, Cathay Pacific conducted over 80 flights utilizing the predictive technology. The results demonstrated a 40 percent reduction in the warming effect of contrails on those specific routes, proving the operational viability of the software on long-duration flights.

Lawrence Fong, Director of Digital and IT at Cathay Pacific, stated that the collaboration highlights how data and innovation can address real-world challenges at scale. Fong noted that the aviation sector requires immediate climate solutions and that artificial intelligence is accelerating that progress.

Operational integration and cost efficiency

Implementing contrail avoidance requires minimal changes to existing flight operations. Pilots receive contrail forecasts alongside standard operational data, enabling them to request altitude changes from air traffic control when approaching high-risk zones. While flights that alter their trajectory to avoid contrails consume approximately 2 percent more fuel, the fleet-wide fuel burn increase is estimated at just 0.3 percent because only a small fraction of flights require adjustment.

This efficiency makes contrail mitigation highly cost-effective. Google estimates the cost of implementation at $5 to $25 per ton of carbon dioxide equivalent (CO2e). Kemal Armada, Product Manager for Climate and AI at Google, described the technology as an extremely low-cost and effective climate lever that is immediately available for existing aircraft fleets regardless of the fuel type currently in use.

Broader industry adoption

The Cathay Pacific expansion is part of a broader push by Google to deploy its contrail prediction models across the global aviation sector. Prior to the Cathay Pacific trials, Google partnered with American Airlines (AA) for a 70-flight test program that achieved a 54 percent reduction in contrail formation.

On August 18, 2026, Google also launched “Operation Blue Skies,” a 30-month trial backed by the United Kingdom government. That initiative aims to test contrail avoidance at the scale of an entire oceanic airspace, focusing on the Shanwick Oceanic Control Area in the North Atlantic corridor.

AirPro News analysis

We view the expansion of the Cathay Pacific and Google partnership as a critical validation of software-based climate interventions in commercial aviation. While the industry heavily promotes Sustainable Aviation Fuel (SAF) and next-generation propulsion systems, those technologies face severe supply constraints and decades-long development timelines. Contrail avoidance utilizes existing aircraft and current air traffic management frameworks. If the 0.3 percent fleet-wide fuel penalty holds true at scale, airlines can achieve a disproportionately large reduction in their overall climate impact for a fraction of the cost of SAF procurement. The primary hurdle moving forward will likely be air traffic control capacity, as widespread altitude adjustments in congested airspace could introduce operational complexities that isolated trials have not yet fully tested.

Sources: Cathay Pacific

Photo Credit: Cathay Pacific

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Sustainable Aviation

Nova Pangaea Completes 72-Hour SAF Endurance Trial at Teesside

Nova Pangaea Technologies validates its REFNOVA waste biomass to bioethanol process with a 72-hour continuous trial at its UK plant.

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Nova Pangaea Technologies (NPT) has completed a 72-hour continuous endurance trial of its REFNOVA technology at its Teesside demonstration plant in the United Kingdom, validating a process that converts waste biomass into bioethanol for Sustainable Aviation Fuel (SAF) production.

Announced in a press release on August 24, 2026, the milestone demonstrates a scalable alternative to hydroprocessed esters and fatty acids (HEFA) derived from used cooking oil. The HEFA pathway currently dominates the SAF market but faces supply constraints and escalating costs as competition intensifies across biofuel sectors.

Scaling waste-to-fuel technology

During the trials, the Teesside facility processed up to three tonnes of softwood residues per day, maintaining stable operation for up to 72 hours. The successful run follows initial smaller-scale tests conducted in early 2025 that proved the viability of the REFNOVA process outside laboratory conditions.

NPT Chief Executive Officer Stewart Stewart stated in the press release that the trials validate the technology and will support investor confidence as the company moves toward constructing its first commercial plant.

To date, NPT has raised over £21 million from investors including International Airlines Group (IAG), Mercia Ventures, and UK government grants. The company plans to conduct further trials in 2027 to refine the design of its commercial-scale facilities.

Project Speedbird and UK SAF mandates

The technological validation directly supports Project Speedbird, a joint initiative between NPT, LanzaJet, and British Airways. Backed by the UK government’s Advanced Fuels Fund, the project aims to develop domestic SAF production capabilities using agricultural and wood waste. Under this initiative, NPT plans to construct four UK facilities to produce bioethanol.

The push for domestic production aligns with the UK SAF Mandate, which requires 3.6% of jet fuel supplied in 2026 to come from sustainable sources. This requirement scales to 10% by 2030 and 22% by 2040.

Speaking to SAF Investor, Stewart emphasized the urgency of diversifying feedstocks amid rising demand and geopolitical supply chain shocks.

“Nova Pangaea’s tried and tested technology offers a genuine alternative. By tapping into the plentiful supplies of waste biomass, we can boost SAF production, enhancing our energy security, and building a new domestic industry that generates jobs and revenues while reducing fossil fuel emissions,” Stewart told the publication.

AirPro News analysis

We view the successful endurance trials at Teesside as a necessary step toward breaking the aviation industry’s reliance on used cooking oil and waste animal fats. While HEFA-based SAF has proven the viability of drop-in replacement fuels, the limited global supply of waste oils creates a hard ceiling on production capacity.

Unlocking agricultural and forestry waste as a feedstock opens a significantly larger volume of raw material. The International Air Transport Association (IATA) estimates that available waste biomass in Europe and the UK could yield 30 million tonnes of SAF by 2030. Beyond volume, the REFNOVA process generates biochar as a byproduct. This creates a carbon-negative fuel lifecycle, which will become increasingly valuable to airlines as regulatory frameworks tighten around lifecycle emissions accounting.

Sources: Nova Pangaea Technologies

Photo Credit: Nova Pangaea Technologies

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Sustainable Aviation

KBR PureSAF Technology Selected for Kazakhstan First SAF Plant

KBR licenses PureSAF technology for Kazakhstan’s first SAF facility, using an alcohol-to-jet process with domestic feedstocks.

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Global engineering firm KBR announced on August 24, 2026, that it secured a contracts to license its proprietary PureSAF technology and provide engineering design for Kazakhstan’s inaugural Sustainable Aviation Fuel (SAF) production facility. The project, developed in partnership with KazMunayGas-Aero LLP (KMG-Aero) and KazFoodProducts (KFP), will utilize domestic agricultural feedstocks to produce low-carbon aviation fuel via an alcohol-to-jet (AtJ) process.

In a press release detailing the contract award, KBR confirmed the agreement supports Kazakhstan’s strategic objective to establish itself as an international aviation hub while advancing aviation decarbonization. The planned facility will leverage technology developed in collaboration with Swedish Biofuels AB to convert ethanol into drop-in aviation fuel.

Technology and Project Scope

The facility will utilize KBR’s PureSAF technology, an alcohol-to-jet pathway designed to process agricultural feedstocks into sustainable aviation fuel. The foundational trilateral agreement covering the Process Design Package (PDP) and technology licensing was signed by KBR, KMG-Aero, and KFP in Astana on July 23, 2026. KBR, which employs approximately 37,000 people and operates in 28 countries, will provide the engineering framework required to scale the AtJ process for commercial output.

KBR Sustainable Technology Solutions President Jay Ibrahim stated the company is honored to support the national commitment to reduce greenhouse gas emissions.

“KBR’s PureSAF is a feed-flexible, bankable technology that is designed to deliver high SAF yields and supports the project across the full lifecycle. We look forward to closely collaborating and supporting the successful execution of this landmark SAF project,” Ibrahim said.

Kazakhstan’s Aviation Decarbonization Strategy

The KBR contract follows a series of government initiatives aimed at building a domestic SAF supply chain. On August 4, 2026, Kazakh Prime Minister Olzhas Bektenov and Dr. Peter Lee of Hong Kong-based Full Vision Capital signed a memorandum of understanding to explore creating a green aviation fuel ecosystem in the city of Alatau. This proposed ecosystem would cover the full production cycle, from cultivating agricultural feedstock to manufacturing the finished product.

These infrastructure investments align with recommendations from global aviation regulators and industry groups. In April 2026, the International Air Transport Association (IATA) emphasized that continued investment in SAF, alongside new airport infrastructure, is critical for Kazakhstan to capitalize on global passenger and cargo traffic and strengthen its domestic aviation sector.

AirPro News analysis

The KBR contract award represents a concrete technical step in Kazakhstan’s ambition to localize SAF production, but several commercial variables remain undefined. The August 24 announcement did not disclose the financial value of the engineering contract, the projected production capacity of the facility, or a target completion date. We note that while the alcohol-to-jet pathway is a proven method for SAF production, scaling agricultural feedstock supply-chain domestically will be critical to the plant’s long-term viability. The parallel involvement of Full Vision Capital suggests the government is actively working to finance and structure this agricultural supply chain in the Alatau region to ensure the KBR-designed facility has the necessary inputs to operate at scale.

Sources: KBR

Photo Credit: Montage

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