December 20, 2025

Solar aviation fuel: Unique Swiss Air deal starts in 2023

Swiss Air Lines to Purchase Solar Aviation Fuel in Long-Term Deal with Synhelion

In a groundbreaking move for sustainable aviation, Swiss International Air Lines (SWISS) has signed a strategic, long-term offtake agreement with the clean energy company Synhelion. The deal secures a decade-long supply of solar aviation fuel, positioning SWISS as the world’s first airline to commit to using this innovative, low-carbon fuel. This partnership marks a significant step toward decarbonizing the aviation sector and highlights a practical application of advanced solar technology.

Solar Fuel to Reduce Carbon Emissions in Aviation

The core of this agreement is solar fuel, a synthetic paraffinic kerosene produced using concentrated solar energy. This sustainable aviation fuel (SAF) is designed to significantly cut carbon emissions by replacing traditional fossil-based jet fuel. The process is a remarkable feat of engineering; it uses concentrated solar heat to convert carbon dioxide and water into syngas, which is then processed into liquid fuel.

This innovative manufacturing process creates a “drop-in” fuel, meaning it is fully compatible with existing aircraft and fueling infrastructure. Unlike biofuels, it doesn’t compete with agricultural land for raw materials, instead using captured CO2. This initiative aligns perfectly with Switzerland’s ambitious solar goals, demonstrating how the country’s commitment to solar power extends beyond electricity generation into complex industrial applications.

First Commercial Production of Solar Aviation Fuel

Synhelion is set to begin the world’s first commercial production of solar fuel at its facility in Jülich, Germany. For German residents and renewable energy enthusiasts, this places the country at the forefront of a new era in sustainable fuel production. SWISS plans to begin using the solar kerosene from 2025, marking a pivotal moment for the airline industry.

The establishment of such a facility requires a deep understanding of the basics of solar panel manufacturing and the sophisticated manufacturing machines needed to harness solar thermal energy. This solar fuel is poised to be a game-changer, providing a scalable, sustainable alternative that supports the aviation industry’s goal of achieving net-zero emissions by 2050.

Long-Term Agreement for Solar Aviation Fuel

The 10-year agreement provides Synhelion with the planning security needed to scale up production and provides SWISS with a stable supply to gradually integrate solar fuel into its operations. This long-term commitment is crucial for capital-intensive projects, reflecting the importance of impressive solar project financing to bring new green technologies to market.

This strategic partnership is a key component of SWISS’s broader environmental strategy. By setting a benchmark for the industry, the airline hopes to encourage other carriers to adopt similar sustainability practices and invest in cleaner fuel sources. The financial planning behind such a large-scale project is complex, often requiring detailed analyses similar to the financial modeling for a Swiss solar factory.

Future of Solar Aviation Fuel in Aviation

The collaboration between SWISS and Synhelion is expected to pave the way for the broader adoption of solar fuel across the aviation industry. As production capacity increases and the plant cost breakdown becomes more efficient with scale, more airlines may follow SWISS’s pioneering lead. This initiative is a powerful example of how national energy goals, like the Swiss solar energy targets, can drive innovation with global impact.

Solar fuel has the potential to revolutionize air travel by providing a cleaner, more sustainable energy source. Overcoming logistical challenges, much like those addressed in strategies for landlocked solar manufacturing, will be key to its widespread success. SWISS’s commitment demonstrates a proactive approach to tackling climate change, setting a positive example for the industry and contributing to a greener future for aviation.

If you are interested in the technical and business aspects of bringing solar technologies to life, from initial concept to full-scale production, consider exploring our free e-course on solar panel manufacturing.

Disclaimer: The information published here is aggregated from publicly available sources. PVknowhow.com does not guarantee the accuracy, completeness, or timeliness of the content. If you identify any incorrect or misleading information, please contact us so we can review and, if necessary, correct it.

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