The Japanese government is accelerating efforts to convert used cooking oil into sustainable aviation fuel to meet national climate targets [1].

This initiative represents a critical shift in how the country manages waste to lower the carbon footprint of its aviation sector. By transforming household waste into energy, Japan seeks to reduce its reliance on traditional fossil fuels for air travel.

The Ministry of Economy, Trade and Industry (METI) is leading the campaign to encourage households to collect and recycle oil used for deep-fried dishes [1]. This nationwide push involves coordinating collection points where citizens can hand over used oil for conversion into sustainable aviation fuel (SAF) [2].

Government officials have set a specific benchmark for the transition. "We aim to have 10% of all jet fuel in Japan come from sustainable aviation fuel by 2030," a METI spokesperson said [1].

To reach this goal, the government is emphasizing the role of the general public in the supply chain. The process requires a steady stream of feedstock to keep conversion plants operational [2]. The METI spokesperson said, "Every household can contribute by collecting the oil they use for deep‑fried dishes and handing it over for conversion into SAF" [1].

Japan is currently expanding its infrastructure to handle the processing of these oils on a larger scale. This strategy aligns with broader international efforts to decarbonize the skies, a sector that has historically been difficult to transition away from petroleum-based kerosene [1, 2].

“Japan aims to have 10% of all jet fuel come from sustainable aviation fuel by 2030.”

Japan's strategy highlights the challenge of scaling sustainable aviation fuel (SAF). Because aviation requires high energy density, liquid biofuels like those derived from cooking oil are among the few viable near-term alternatives to kerosene. By integrating household waste collection into a national industrial strategy, Japan is attempting to create a circular economy that solves two problems at once: waste management and aviation emissions.