2025
Marubeni and HIS Collaborate to Reduce CO2 Emissions from Air Travel:
Launch of a Tour in Spain Utilizing SAF’s CO2 Reduction Attributes
Jun. 06, 2025
Marubeni Corporation
Marubeni Corporation (hereinafter, “Marubeni”) has sold the CO2 reduction attributes*1 generated through the use of Sustainable Aviation Fuel*2 (hereinafter, “SAF”) to H.I.S. Co., Ltd. (hereinafter, “HIS”) in the form of certificates. HIS will utilize the attributes to launch a tour that aims to contribute to society by reducing CO2 emissions compared to those generated using conventional jet fuel.
Background
CO2 emissions from the aviation industry account for approximately 2% of global CO2 emissions, and there are concerns about further increases due to the growing demand for aviation. The International Air Transport Association (hereinafter, “IATA”) has set a goal of reaching net-zero CO2 emissions for the aviation industry by 2050, and the spread of SAF plays an important role in achieving this goal. Marubeni is actively engaged in various initiatives to promote the use of SAF, including importing SAF and conducting feasibility studies for SAF production and sales businesses in Japan. HIS is committed to achieving net-zero CO2 emissions across all of its business activities, including the supply chain, by 2050. HIS is currently working to reduce CO2 emissions generated during travel through various initiatives, such as introducing EVs, investing in the SAF industry, and planning and implementing tours that utilize SAF.
Initiative Overview
In this initiative, HIS will plan and sell a tour with reduced environmental impact using a program started by Marubeni to widely sell indirect CO2 reduction attributes. This is the first time a travel agency will plan and sell a tour using the program.

Program Overview
Marubeni issues certificates based on the CO2 reduction attributes of SAF it supplies through the Book and Claim*3 mechanism, allocating indirect CO2 reduction attributes to airlines end users. By issuing flexible certificates tailored to the needs of airlines end users, the program promotes the use of indirect CO2 reduction attributes, thereby contributing to the wider adoption of SAF. The program has been validated by Nippon Kaiji Kyokai (“ClassNK”), an international third-party certification body, ensuring transparency and reliability in the calculation of CO2 reduction attributes and the issuance of certificates.
Overview of the Tour Utilizing the CO2 Reduction Attributes
HIS will lower part of the CO2 emissions associated with aircraft use by utilizing the indirect CO2 reduction attributes*4 acquired through Marubeni’s program to reduce the environmental impact of air travel. In particular, HIS will contribute to promoting the use of SAF equivalent to approximately two-thirds of the CO2 emissions associated with aircraft use*5 (round trip) on flights operated by Iberia Airlines.
Tour Details
8-day Spain tour
Departure and arrival at Narita Airport
https://www.his-j.com/theme/sustainable-tourism/saf/
(Only available in Japanese)
Applicable on Iberia Airlines flights from November 2025 to January 2026
Future Outlook
Marubeni aims to contribute to global climate change measures in the medium- to long-term through various initiatives that promote the use of SAF. HIS will consider expanding the application of the program, supporting the decarbonization of the aviation industry and raising awareness among travelers about reducing the environmental impact of travel through the wider use of SAF.
*1 When airlines use SAF, the direct CO2 emissions from aircraft are reduced. At the same time, the indirect CO2 reduction effects associated with passenger travel are also recognized as indirect CO2 reduction attributes, in addition to the direct reduction. This approach is adopted under international standards for the calculation and reporting of greenhouse gas emissions by companies and organizations.
*2 Aviation fuel that can reduce CO2 emissions by approximately 80% across its life cycle compared to conventional jet fuel. It is mainly produced from feedstocks, such as used cooking oil and animal fats, contributing to resource circulation by effectively utilizing these resources.
*3 A mechanism to manage and trade CO2 reduction attributes separately from the actual flow of products (SAF). While efficiently using SAF as fuel, companies that need CO2 reduction can receive the attributes, enabling both optimization of SAF use and effective utilization of environmental value.
*4 Part of the tour fee is allocated to the purchase cost of indirect CO2 reduction attributes.
*5 The estimated reduction volume is calculated based on the use of economy class. It will change when using premium economy class or business class, which have higher emissions.