Facilities for Sustainable Aviation Fuel (SAF) Production
- Client
- Idemitsu Kosan Co.,Ltd. (Idemitsu Kosan).
- Location
- Tokuyama Complex of Idemitsu Kosan, Shunan City, Yamaguchi Prefecture
- Scope of Work
- Front End Engineering Design (FEED)


Chiyoda is executing the Front End Engineering Design (FEED) for SAF production facilities for Idemitsu Kosan Co.,Ltd. (Idemitsu Kosan) in Tokuyama Complex, Shunan City, Yamaguchi Prefecture.
Idemitsu Kosan is aiming to establish a domestic supply chain to produce 500,000 kL of SAF per year to achieve the initial goal of the Japanese government and the aviation industry to replace 10% of fuel consumption by Japanese airlines with SAF by 2030. At the complex, Idemitsu Kosan has announced to produce 250,000 kL of SAF per year by HEFA* technology after FY2028.
Chiyoda will utilize its technical capabilities and over 70 year experience in oil and gas plant engineering to implement the facilities and the decarbonization of aviation fuel, following a Feasibility Study (FS) conducted last year.
Chiyoda is actively engaged in the development of Biofuel production technology towards the realization of a carbon-neutral society. Through these initiatives, Chiyoda is engaged in EPC projects worldwide and the development of technologies to realize a carbon-neutral society, and will continue contributing to the development of sustainable society under our purpose of ‘Enriching Society through Engineering Value.’
- Hydroprocessed Esters and Fatty Acids technology and process for producing SAF from hydroprocessed esters and fatty acids obtained by hydrotreating vegetable oils and other materials. Certified as ‘ASTM D7566 Annex 2,’ the international standard for SAF.

Tokuyama Complex, the planned construction site of the HEFA-SAF production facility (center)
Reference:
1. Idemitsu Kosan press release dated August 2, 2024
Transition of HEFA-SAF Production Project at Tokuyama Complex to FEED2. Chiyoda Press Release dated December 20, 2024
Chiyoda Awarded the FEED of Installing Facilities for SAF Production in Tokuyama Complex by Idemitsu Kosan