A race against time and against ourselves. Against the dangerous idea that we can’t do this, that there is no way.
Unlike most races, it won’t have one winner. In this race we all win, or we all lose. Winning it requires a radical, unprecedented level of collaboration, from all corners of our world. From our cities, businesses, regions and investors. From people everywhere.
Together we’re racing for a better world. A zero carbon and resilient world. A healthier, safer, fairer world. A world of wellbeing, abundance and joy, where the air is fresher, our jobs are well-paid and dignified, and our future is clear.
To get there we need to run fast, and get faster. We need more and more people to join the race, and right now. This is not about 2050, it’s about today.
Together, we can do this. And we’re already on our way.
An Airbus powered by cooking oil: Is sustainable aviation fuel the future of aviation?
By Andrea Willige | April 19, 2022
An A380 Airbus recently flew for three hours with one engine powered entirely by sustainable aviation fuel (SAF), made from used cooking oil and other fats.
Switching from petroleum-based kerosene to sustainable fuels plays a big part in aviation’s efforts to cut CO2 emissions in the race to net-zero.
But supply and demand for SAFs is still fledgling and needs both the aviation industry and policy-makers’ support to reach the scale needed to make a dent in emissions.
Used cooking oil is probably not the first thing that springs to mind when you think about your next holiday flight. But that could soon change. Airbus has just completed its first test flight of an A380 jumbo jet with one engine powered entirely by sustainable aviation fuel (SAF). The fuel used was a mix of used cooking oil and other waste fats, purified to extract sulphur and other contaminants.
Airbus has now added further momentum by flying the largest passenger aircraft in the world for three hours using a mix of kerosene and SAF. One of the outer engines was powered entirely by sustainable aviation fuel during the test. The A380 joins its smaller relatives, the Airbus A350 and the A319neo, which went through similar tests last year.
SAF (sustainable aviation fuel) can be made from a wide variety of sources. These include corn grain, algae, agricultural and forestry residues, solid waste and dedicated energy crops. Many SAFs contain fewer aromatic components than kerosene, enabling them to burn cleaner. This improves aircraft performance and also reduces emissions of pollutants other than CO2.
As with so many sustainable and renewable energy sources, SAF still comes at a high cost: sustainable aviation fuel currently costs around four times as much as conventional jet fuel. As a result, supplies are limited, with production currently estimated at less than 0.1% of global jet fuel consumption. Even the expected increase to about 3% of forecast demand in 2030 will fall short of targets set by legislators such as the European Union in its Green Deal, according to BloombergNEF. More demand would boost production and bring prices down.
Another issue is that not all sustainable aviation fuels are created equal. Some production methods are more CO2-heavy than others, as a working paper from the International Council for Clean Transportation (ICCT) has pointed out. The key will be to make the most of those methods that offer the best greenhouse gas savings, the ICCT concludes.
However, the importance of SAF as a major route towards decarbonizing the aviation sector remains. This was underlined when 60 members of the World Economic Forum’s Clean Skies for Tomorrow Coalition came together in autumn 2021 to commit to achieving broad industry adoption of SAFs by 2030. The aim is to tackle what the signatories call the “chicken and egg” problem around supply and demand of sustainable aviation fuels, supported by both industry and policy initiatives. The coalition is targeting a share of 10% of global jet aviation fuel to be SAF by 2030.
Written by Andrea Willige, Senior Writer, Formative Content.
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