• U.K. Ministry of Defence

Sustainable aviation fuel will power Royal Air Force fighter jets


Aircraft including F-35s, Typhoons and Wildcat helicopters currently use conventional fuel, but could use up to 50 percent sustainable sources in the future, after the Ministry of Defence’s changed aviation fuel standards came into effect in November.


Known as ‘drop-ins,’ sustainable fuel sources include hydrogenated fats and oils, wood waste, alcohols, sugars, household waste, biomass and algae.


As aviation currently accounts for nearly two thirds of fuel used across defence, the new standards will lead to a significant reduction in emissions and improve defence’s carbon footprint.


It is estimated that by substituting 30 percent of conventional fuel with an alternative source in a jet traveling 1,000 nautical miles could reduce CO2 emissions by 18 percent.


As well as cutting emissions, using diverse and readily available materials such as household waste including packaging, grass cuttings and food scraps will prevent waste being sent to landfill.


“The U.K. is leading the way in sustainability and, by refining our aviation fuel standards, we are taking simple yet effective steps to reduce the environmental footprint of defence,” said Ben Wallace, the U.K.’s secretary of defence. “As we strive to meet this government’s net zero carbon emissions target by 2050, it is right that we step up to spearhead these positive changes across both military and civilian sectors.”


On Dec. 12, the U.K. co-hosted the Climate Ambition Summit with the UN and France, where more than 70 world leaders made bold commitments to cut emissions, fund climate finance and adapt to climate change ahead of COP26 in Glasgow next year.


The Ministry of Defence’s move to allow up to 50 percent sustainable fuel marks a huge shift in global fuel consumption and opens the door for thousands of civilian and military aircraft to be fueled with sustainable aviation fuel (SAF).


Not only do Australia and several NATO countries rely on the U.K.’s standards to influence what fuel they use, but civil and commercial airlines in the U.K. follow the defence standard as there is no commercial equivalent.


U.K. suppliers are also more likely to offer the same standard for commercial aircraft if they are already developing and importing sustainable fuel to supply defence. The Compania Logistica de Hidrocarburos-Pipeline System (CLH-PS), which is based in Madrid and provides fuel to several military airfields as well as Heathrow, Gatwick, Manchester airports, has welcomed the Ministry of Defence’s new standards as an opportunity to pursue sustainable fuel use.


“Making all forms of transport more sustainable is critical if we are to meet our ambitious net-zero target,” said Grant Shapps, the U.K.’s transportation secretary. “From powering RAF Jets to the passenger planes which get us from A to B, sustainable fuels will play a huge part in decarbonizing aviation and I’m excited to explore the possibilities as we make transport cleaner, greener and more efficient.”


Luke Robbins, commercial director of CLH-PS, said, “CLH-PS welcomes the announcement by the Ministry of Defence to begin accepting sustainable aviation fuel blends, which will allow use of SAF in the U.K.’s critical pipeline infrastructure and downstream distribution network. As part of CLH’s sustainability strategy we are committed to contributing to the growth of SAF in particular and this change will enable us to work with our partners, including the Ministry of Defence, to facilitate its wider use in the U.K. aviation market.”


Lieutenant General Richard Wardlaw OBE, the chief of U.K.’s defence logistics and support, said, “The Defence Strategic Fuels Authority has been working tirelessly with industry partners to change the Defence Standard for Aviation Fuel, allowing SAF deliveries to the Ministry of Defence. This is a significant change for Defence, enabling us to take a key step towards reducing our CO2 footprint, consistent with our wider ambition for achieving NZ50. And this is only the beginning. With the Defence Climate Change and Sustainability Strategy, due for release later this year, we are at the start of a journey to adopt a range of greener policies and new greener technologies, so that we can reduce our environmental impact while enhancing our operational capabilities.”


Adopting greener technology in the Ministry of Defence’s aircraft fleet is part of the department’s strategy to reduce its contributions to carbon and greenhouse gas emissions. Measures like this will be reflected in the department’s ongoing Climate Change and Sustainability Review, led by Lieutenant General Richard Nugee.


The review will focus on a range of initiatives from the Ministry of Defence’s NZ50 strategy to setting the right baseline for defence’s emissions and carbon footprint, with findings set to be published in early 2021.

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