Lydian raised $43 million in Series A funding to commercialize synthetic aviation fuel designed to cut lifecycle emissions by up to 95%.

Breakthrough Energy Ventures led the round through the oneworld BEV Fund, its first announced investment from the aviation-focused vehicle.

Lydian says its modular PIVOT platform can reduce plant capital costs by more than 50%, with commercial demonstration targeted for 2028.

Synthetic aviation fuel developer Lydian has raised $43 million to advance technology designed to make lower-carbon jet fuel competitive with conventional alternatives.

Breakthrough Energy Ventures, founded by Bill Gates, led the Series A round. The investment is the first announced deployment from the oneworld BEV Fund, created with global airline alliance oneworld and participating airlines.

The fund was launched to accelerate next-generation sustainable aviation fuel technologies and expand supply. High production costs and limited availability remain major barriers to SAF adoption across global aviation.

Lydian aims to address both challenges with its modular PIVOT production platform.

Cutting the cost of synthetic aviation fuel

Founded in 2021, Cambridge-based Lydian develops systems that produce synthetic aviation fuel from captured carbon dioxide, hydrogen and renewable electricity.

Its PIVOT platform combines proprietary reactor technologies, catalysts, software, process design and balance-of-plant equipment. These components are integrated into standardized, factory-built modules rather than large bespoke facilities.

Lydian says this approach can reduce plant capital costs by more than 50% compared with competing technologies.

The technology is also designed to operate flexibly around intermittent renewable electricity. That allows producers to take advantage of periods when clean power is cheaper and more readily available.

According to Lydian, PIVOT can produce drop-in aviation fuel with lifecycle greenhouse gas emissions up to 95% below conventional jet fuel. It can also shorten project development timelines by as much as two years through pre-engineered modules.

Carmichael Roberts, Managing Partner at Breakthrough Energy Ventures, said: “Decarbonizing aviation will require advanced fuels that compete on cost, work within today’s aviation infrastructure, and deliver the performance flyers and airlines expect. Lydian is taking on that challenge with a purpose-built approach to synthetic aviation fuel production.”

Carmichael Roberts, Managing Partner at Breakthrough Energy Ventures

Airlines target a persistent SAF supply gap

Aviation remains one of the most difficult sectors to decarbonize because aircraft require energy-dense fuels and fleets have long operating lives.

SAF offers a route to lower emissions without replacing existing aircraft or fuel infrastructure. However, available supply remains well below projected demand, while production costs can significantly exceed those of fossil-based jet fuel.

The oneworld BEV Fund is intended to address those constraints by investing in emerging SAF technologies and supporting more diversified fuel supply chains.

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Its strategy includes backing next-generation SAF production, developing alternative fuel markets and creating economic value in regions hosting new production capacity.

For airlines, investment in new production technologies could also help reduce future exposure to limited supply and volatile pricing as climate policies tighten.

Commercial deployment targeted for 2030

Lydian currently operates a ton-scale pilot plant at its Boston R&D Center of Excellence.

The company is now developing a commercial demonstration facility targeted to begin operations in 2028. Its first full-scale commercial deployment is expected in 2030.

Lydian believes its platform could allow synthetic fuels to compete with biofuels on price within this decade. Achieving that goal would broaden the range of lower-carbon fuel options available to airlines.

Joe Rodden, CEO and Co-founder of Lydian, said: “PIVOT represents a fundamentally different approach to synthetic fuel production. By designing every part of the system for lower capital costs, greater operational flexibility, and faster deployment, we’ve created a platform for commercially competitive synthetic fuel projects. This financing gives us the resources to bring that vision to market.”

For aviation executives and investors, the economics will be as important as the emissions profile. Airlines face growing pressure to reduce emissions while maintaining network growth and controlling fuel costs.

If modular synthetic fuel technologies can reach commercial scale at competitive prices, they could expand SAF supply beyond feedstock-constrained biofuels. That would give airlines another route toward meeting long-term climate commitments while strengthening the resilience of the global aviation fuel market.

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