In aviation, efforts to reduce well-to-wake emissions are focused on scaling up the use of sustainable aviation fuels (SAFs), the most impactful short- and medium-term lever in the decarbonization pathway of the industry. Most discussion in the aviation industry, by contrast, has been focused on reducing fuel-related emissions, often referred to as “well-to-wake” emissions, which are counted mostly as scope 1 for airlines and scope 3.11 (use of sold products) for aerospace OEMs. The automotive industry is reducing lifecycle emissions in two primary ways: first by reducing tailpipe emissions by accelerating the transition to battery-electric, hybrid, and hydrogen-fuel-cell-electric vehicles second by undertaking circular car initiatives that focus on reducing or eliminating emissions throughout the manufacturing and maintenance processes. Please email us at: difference in emission profiles explains why the automotive and aviation industries are tackling decarbonization in different ways. If you would like information about this content we will be happy to work with you. We strive to provide individuals with disabilities equal access to our website. A large driver for that difference is that cars typically have a shorter operational life than commercial aircraft and get used less each day. 1 That is significantly different from the lifetime emissions of a typical passenger car, which has a higher share of emissions from manufacturing, assembly, and materials (Exhibit). About 1 percent is attributed to aircraft manufacturing, assembly, and maintenance, or to the materials used in these processes. These companies cannot only support their airline customers in decarbonizing flight operations they can also decarbonize their own operations-the part of the process they truly own.įor a typical narrowbody aircraft, our analysis shows that about 99 percent of the lifetime CO 2 emissions come from fuel, including its sourcing and combustion. Airlines have already committed to achieving net-zero emissions by 2050, but companies within the aerospace industry-airframe OEMs, propulsion specialists, and other suppliers-also have an opportunity to make the greener products. When all related factors are included, such as the impact of NOx, contrails, and water vapor, the share could be double that or more. July 18, 2022Commercial aviation accounted for roughly 3 percent of global CO 2 emissions in 2019.

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