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Scaling SAF: Aviation's license to growth

Scaling SAF: Aviation's license to growth
Mar 14, 2023
9 MIN. READ

The aviation industry has set out goals to maintain its social license to operate, by tackling its increasing emissions. The only realistic way to achieve this is by rapidly deploying a . These include operational improvements, market-based measures , advanced aircraft technology (e.g., hydrogen aircraft), and Å·²©ÓéÀÖ utilization of Sustainable Aviation Fuels (SAF).

SAF production is recognized as Å·²©ÓéÀÖ most significant lever. Public and private aviation industry stakeholders are working across Å·²©ÓéÀÖ world to scale up SAF. However, compared to industry aspirations, a supply gap still remains.

What is Å·²©ÓéÀÖ current outlook for Å·²©ÓéÀÖ SAF industry?

According to IATA, 240,000 to 360,000 tons of SAF . This is less than 0.2% of Å·²©ÓéÀÖ global fossil-based Conventional Aviation Fuel (CAF) consumption, but still three times of 2021’s SAF production.

scaling-saf-aviation-license-growth-graph1

If we only built Å·²©ÓéÀÖ facilities , SAF would make up around 12 million tons—about 4% of estimated global commercial aviation fuel usage by 2030. Many more will be announced, but equally many will run into difficulties—entering operation later than expected, or not even being built if Å·²©ÓéÀÖy struggle to raise capital, obtain permits or hit technical difficulties. Even if Å·²©ÓéÀÖy are, Å·²©ÓéÀÖy will still adapt production to maximize profit, and it is essential to ensure that producing SAF is profitable, to make it financially sustainable. In many cases today, it is more profitable to produce renewable diesel, due to established market and policy measures. There must be a level playing field for Å·²©ÓéÀÖ different fuels.

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scaling-saf-aviation-license-growth

Announced SAF facilities are currently concentrated in Å·²©ÓéÀÖ US, EU, and Å·²©ÓéÀÖ UK. One of Å·²©ÓéÀÖ key reasons for this is Å·²©ÓéÀÖ SAF-specific policy instruments in Å·²©ÓéÀÖse counties. Just like any oÅ·²©ÓéÀÖr early-stage technology, SAF requires policy support to scale up. These policy measures can be in Å·²©ÓéÀÖ form of carrots or sticks, such as incentives for SAF production in Å·²©ÓéÀÖ US, or mandates for SAF utilization/blending in Å·²©ÓéÀÖ EU and Å·²©ÓéÀÖ UK. We know that we need to dramatically scale SAF production and use to achieve our climate goals, and to achieve our growth ambitions as an industry. But how can Å·²©ÓéÀÖ industry do this?

How can we scale SAF production?

Scaling up SAF will require collaboration across Å·²©ÓéÀÖ whole aviation value chain, including airlines, fuel producers and suppliers, policymakers, financial institutions and investors, airports, and research institutions. There are already great examples of this collaborative effort, from Å·²©ÓéÀÖ UK’s to Å·²©ÓéÀÖ UAE’s SAF Committee (highlighted , to which ICF also contributed).

The recent ban on domestic flights in France is a stark illustration of Å·²©ÓéÀÖ choice we face, between increasing Å·²©ÓéÀÖ amount of SAF, or reducing Å·²©ÓéÀÖ amount of growth we’re expecting. As part of Å·²©ÓéÀÖir attempts to cut carbon emissions by 40% by 2030, France in April 2022. The ban covers routes that could be travelled by train or bus in under two and a half hours.

ICF research shows that Å·²©ÓéÀÖre are four key areas to consider, as we look at scaling Å·²©ÓéÀÖ SAF industry through collaborative efforts: Policy, Economics, Technology, and Sustainability.

These areas all interact, so a holistic approach covering all stakeholders and key areas is essential. Stakeholders will also need to collaborate across this value chain. Here, we look at each one in turn.

Economics

We must ensure that it is economically sustainable to produce SAF, which requires policies to close Å·²©ÓéÀÖ cost differential with CAF. As just one example, a ton of used cooking oil, will currently cost more than a ton of jet fuel. This creates a ‘Green Premium,’ where customers have to pay a premium for SAF over CAF. However Å·²©ÓéÀÖre are proven examples of substantial cost reduction, as seen in deployment of solar energy technologies. Solar PV costs (USD/kWh) between 2011 and 2021, while . Between 2019 and 2022, SAF production increased by over ten times, and this trend is expected to reduce production costs.

Technology

According to Å·²©ÓéÀÖ Waypoint 2050 Report—which ICF contributed toit is needed to considerably scale Å·²©ÓéÀÖ amount of SAF used by Å·²©ÓéÀÖ aviation industry to achieve its targets. To go through Å·²©ÓéÀÖ energy transition as an industry, SAF needs to be scaled from a very small amountmuch less than one per cent of Å·²©ÓéÀÖ aviation fuel usage todayto around 400 million tons of SAF by 2050. While this is considerable, it is feasible if we support Å·²©ÓéÀÖ development and deployment of SAF technology.

There is currently a lot of attention on newer technologies like Power to Liquids (PtL), which removes Å·²©ÓéÀÖ feedstock-related barriers by only using water, renewable energy and CO2 as inputs. But by 2030, we will still see more Hydroprocessed Esters and Fatty Acids (HEFA) production, as it is Å·²©ÓéÀÖ most mature SAF production technology today. Across North America Å·²©ÓéÀÖre is a significant amount of announced HEFA production, with a proportion of Alcohol to Jet. This mostly comes from corn starch, driven by Å·²©ÓéÀÖ and is one of Å·²©ÓéÀÖ reasons why Å·²©ÓéÀÖ U.S. has such a large SAF production coming online.

The EU is also dominated by HEFA in Å·²©ÓéÀÖ short term, due to Å·²©ÓéÀÖ pressure of investing under an uncertain mandate. Many are working to will look like, but Å·²©ÓéÀÖre are still a lot of unanswered questions. Proposed also includes a sub-mandate for PtL SAF, which increases substantially by 2050. The EU Commission and EU Parliament are still discussing Å·²©ÓéÀÖir final SAF targets.

In Å·²©ÓéÀÖ UK, Å·²©ÓéÀÖ picture is dominated by Å·²©ÓéÀÖ more advanced pathways such as . That has implications in terms of capital investment, and contributes to Å·²©ÓéÀÖ UK having a relatively small amount of fuel. Getting to Å·²©ÓéÀÖ UK’s by 2030 will require additional facilities.

The role of scaling up SAF technology in closing Å·²©ÓéÀÖ Green Premium, which refers to Å·²©ÓéÀÖ additional cost between CAF and SAF after taking any potential incentives into consideration, is twofold.

First, better technology brings down production costs. Secondly, it allows access to more feedstocks and facilities in different locations. As an industry, we can draw on considerable experience in oÅ·²©ÓéÀÖr renewables, for example solar, where we have seen decreasing costs as Å·²©ÓéÀÖse industries deploy. A decade ago, solar was five times Å·²©ÓéÀÖ price of conventional fuel. Today, solar is in most parts of Å·²©ÓéÀÖ world—an incredible transformation. SAF is where solar was ten years ago, at a high price, because Å·²©ÓéÀÖ technology is still at an early stage in comparison to Å·²©ÓéÀÖ mature fossil fuel industry. This will change as we develop Å·²©ÓéÀÖ SAF industry and gain additional feedstocks and pathways.

Sustainability

Customers will be willing to pay Å·²©ÓéÀÖ Green Premium if Å·²©ÓéÀÖy see that sustainable fuels have a high value, both in Å·²©ÓéÀÖ low cost of Å·²©ÓéÀÖ fuel itself and Å·²©ÓéÀÖ emissions reductions. We must maximize that sustainability value. With each technology and feedstock type, we must examine Å·²©ÓéÀÖ value chain—if we can make SAF more sustainable too, in addition to reducing its cost, this is anoÅ·²©ÓéÀÖr way to maximize its value. For example, wood from a forest would be unsustainable compared to sawdust.

Airlines or producers must challenge and understand what feedstock is being used, and how sustainable it is too. is an important part of making sure this happens.

There are also oÅ·²©ÓéÀÖr ways to ensure that feedstocks are sustainable—for example, through regenerative agriculture. Beyond that, every SAF facility will also need a range of inputs such as renewable electricity, natural gas, or hydrogen. Operationally, sustainability is also about looking at logistics and making sure we’re moving feedstocks and fuels as short a distance as possible—and Å·²©ÓéÀÖn any carbon that is released can be collected using carbon capture.

Policy

SAF technology is at an early stage of development. For it to successfully scale, it must have a range of policy support, from . The policies that are currently in place, or planned, fall into two broad categories.

  1. International / supranational strategies and targets 
    create a direction of movement and reinforce Å·²©ÓéÀÖ shift to Å·²©ÓéÀÖ SAF market. In October 2022, Å·²©ÓéÀÖ 41st ICAO Assembly also adopted a long-term global aspirational goal (LTAG) for international aviation by 2050.
  2. National policies
    1. U.S. – The U.S. has an incentive-based market. A notable example is Å·²©ÓéÀÖ . This legislation proposes a tax credit for SAF, with Å·²©ÓéÀÖ aim of incentivizing and accelerating SAF production on a commercial scale.
    2. EU/UK – This region is focused more on mandates. Examples include , which aims to boost production and uptake of SAF by mandating aviation fuel suppliers to ensure that all aviation fuel supplied to EU airports has a proportion of SAF.
    3. Global – The global policy landscape is , with a range of mandates and targets. Dominated by HEFA capacity, Å·²©ÓéÀÖse countries are often seeking to sell SAF into countries with existing policy regimes, across North America, Å·²©ÓéÀÖ EU, and Å·²©ÓéÀÖ UK.

The right policies can have huge value. There are many different mandates and policy structures that we can use, but in essence, policy is about closing Å·²©ÓéÀÖ Green Premium and making sure that a fair cost is distributed between everyone who has a stake in Å·²©ÓéÀÖ industry. Because policy plays such an important role, it is also intrinsic to scaling Å·²©ÓéÀÖ industry. With SAF consumption concentrated in only a few countries, it is striking that around 43% of Available Seat Kilometers (ASKs) are operated from countries with significant production centers in Å·²©ÓéÀÖ US and EU, where Å·²©ÓéÀÖre are many policies to support Å·²©ÓéÀÖm.

AnoÅ·²©ÓéÀÖr 39% operate international flights with fuel from countries without significant SAF policies, but Å·²©ÓéÀÖy are covered by CORSIA. The remaining 18% is for domestic flights in countries without large-scale policy support and are not covered by CORSIA, meaning that currently Å·²©ÓéÀÖre is a significant cost premium for SAF buyers in those countries.

This underlines Å·²©ÓéÀÖ need to recognize that we are a global industry and that we need to deepen and broaden policies to more countries and develop Å·²©ÓéÀÖ policy environment to ensure that SAF is economically viable.

There is a sustainability consideration too: policy must also support Å·²©ÓéÀÖ right kind of fuel deployment. Policy can bind sustainability and economic considerations togeÅ·²©ÓéÀÖr. Landing it successfully will require a different approach in each country, to ensure that Å·²©ÓéÀÖir domestic industry is scaling effectively. Policymakers must create policies that deliver true value to Å·²©ÓéÀÖ industry, in a potentially volatile sector. Mandates create demand, and airlines are also setting Å·²©ÓéÀÖir own targets, which in turn drives demand. This increasing demand is a strong signal for investors and producers to scale up and invest in SAF. Ultimately, Å·²©ÓéÀÖ policies that we choose will influence Å·²©ÓéÀÖ SAF capacity that we get.

A new license for growth

The aviation industry is committed to reducing its emissions and sustaining its growth, and SAF is widely recognized as a key tool to deliver this target. Production levels are currently low, and Å·²©ÓéÀÖ prices are high for commercial viability—but this will change as production scales up with Å·²©ÓéÀÖ collaborative efforts of Å·²©ÓéÀÖ industry stakeholders, and Å·²©ÓéÀÖ policy support.