Scaling Sustainable Aviation Fuel (SAF) via Power to Liquids (PtL) is not only about chemistry and feedstocks, or using technologies and materials that exist today for a new purpose. It is also about running an electricity-led industrial process reliably, day after day, month after month, year after year to make a material difference to emissions and improve security of fuel supplies. In that context, nuclear-powered PtL has a structural advantage: nuclear generation delivers firm, predictable, low-carbon electricity on a continuous basis, which aligns directly with how PtL facilities operate most efficiently. 

PtL production chains includes multiple electricity-dependent stages that perform best during steady operational conditions. When power is variable or frequently interrupted, production facilities are forced to ramp, pause, or restart, which reduces annual output and increases product unit costs. With nuclear supply, the default operating mode is continuous for months or years on end. Work on Equilibrion’s Eq.flight project has highlighted the practical importance of designing around uninterrupted energy availability for high-efficiency PtL operations. 

The operational advantages of nuclear-powered PtL are straightforward and material: 

• Higher utilisation and lower unit cost: Nuclear power’s inherent firmness supports longer durations of operation and a higher effective capacity factor for the PtL plant. Fixed costs are spread across more tonnes of SAF, and operational overhead is reduced because the facility is not repeatedly transitioning between operating modes. 

• Fewer trips and less unplanned downtime: Industrial PtL facilities are sensitive to power disturbances such as voltage dips and short outages, which can trip drives and motors, disrupt control stability, and trigger controlled shutdowns. The consequence is often disproportionate to the initial event because recovery requires careful sequencing across interconnected technologies. A dedicated, stable nuclear energy supply reduces the frequency of these initiating events and protects availability. 

• Improved quality consistency and reduced restart exposure: The most challenging periods for any complex processing site are start-ups and restarts. They increase operator workload, elevate the likelihood of off-spec production, and introduce additional safety exposure compared with steady-state operation. Nuclear-derived PtL reduces the need for restarts and supports tighter, more consistent operating windows, improving product consistency and lowering waste and rejected product. 

• Lower maintenance intensity and better asset life: Frequent cycling and transient loading impose mechanical and thermal stresses that are largely avoided in steady-state operation. Over time, cycling accelerates wear and increases maintenance burden across all equipment. Stable nuclear energy supply supports predictable loads and steadier operating profiles, enabling more planned maintenance and fewer reactive interventions. 

Beyond plant operations, nuclear-powered PtL strengthens the commercial proposition for SAF. The aviation value chain needs dependable volumes delivered on schedule, and projects with predictable operating profiles and fewer downside scenarios offer a lower risk to investors. Firm supply reduces the need for costly buffers and contingency measures that often get priced into contracts and financing assumptions with no hidden costs borne by electricity consumers at large for increased storage and distribution that would be required in a system where variable electricity generators dominate. It also supports credible long-term offtake commitments, because production is less exposed to interruptions that can turn into missed deliveries. 

Eq.flight’s nuclear-powered PtL enables continuous operation, higher availability, more consistent quality, and a lower-risk operating model. In a sector under pressure to scale rapidly while remaining cost-competitive, that combination is a real differentiator. Reliable nuclear electricity is not a secondary consideration for PtL SAF, it is a foundational condition for high availability, competitive cost, consistent quality, safer operations, and investable performance. 

For the DfT announcement of the projects £1m grant see here: Advanced Fuels Fund (AFF) competition winners – GOV.UK

For more information see here: www.eqflight.com and for a conversation or interest in being involved in the project please contact grace.hodgkiss@equilibrion.co.uk.