A Boeing 747 reportedly burns a staggering 3,800 gallons of fuel an hour, or about one gallon every second. So it is no surprise that the aviation industry is looking for ways to make air travel more eco-friendly. But the transition away from traditional jet fuel towards more sustainable options, while being a constant goal of airlines, is easier said than done.
Various airlines are looking for ways to use these clean energy fuels – commonly called sustainable aviation fuel (SAF) – on a widespread basis. Governments as well as individual airlines have set environmental goals for SAF usage in the coming decade. While progress is being made, making SAF ubiquitous in aviation remains a lofty goal.
SAF is generally "made from non-petroleum feedstocks that reduce emissions from air transportation", said the US Department of Energy. There are several sources of SAF, but most are made "from non-petroleum-based renewable feedstocks" such as the "food and yard waste portion of municipal solid waste, woody biomass, fats/greases/oils and other feedstocks".
Creating SAF is "energy intensive," said Heatmap News. This means that finding a way to produce SAF while also "scaling to meet demand is a challenging and expensive task".
Several airlines and governments are working to increase SAF production and meet usage goals. The US is attempting to improve SAF usage with benchmarks to hit by certain years, including a "50% reduction in life cycle greenhouse gas emissions compared to conventional fuel" and the production of "3 billion gallons a year of domestic SAF by 2030", said the US Department of Energy. |