On October 23, 2026, Yachiyo Engineering Co., Ltd. (Head Office: Taito-ku, Tokyo; President & CEO: TAKAHASHI Tsutomu; hereinafter "Yachiyo Engineering") signed a trilateral Joint Study Agreement (hereinafter "the JSA") with Atomis Inc. (Headquarters: Kobe, Hyogo; Representative Director & CEO: ASARI Daisuke; hereinafter "Atomis") and PT Pertamina (Persero) (hereinafter "Pertamina"), Indonesia's state-owned energy company, to implement MOF (Metal-Organic Frameworks) technology that supports efficient gas delivery and energy security.

The JSA signing ceremony was held in the presence of H.E. UENO Atsushi, Ambassador Extraordinary and Plenipotentiary of Japan to the Republic of Indonesia and Representative of Ministry of Energy and Mineral Resources of the Republic of Indonesia (ESDM) Directorate General of Oil ＆ Gas and National Research and Innovation Agency (BRIN). The agreement was signed by Hana Timoti, SVP Technology Innovation & Implementation, Pertamina; ASARI Daisuke, Representative Director & CEO, Atomis; and YAMANAKA Kenjiro, Director & Executive Officer, Head of the Business Development Division, Yachiyo Engineering, representing the three parties.

JSA signing ceremony (from left:

Mochammad Aditya Kardin, Deputy Director for East Asia and Japan Desk Coordinator, Ministry of Foreign Affairs

Ratno Nuryadi, Head of Research Organization for Nanotechnology and Materials, BRIN

Mega Satria, Acting Deputy President Director (PTH Wakil Direktur Utama), Pertamina

Hana Timoti, SVP Technology Innovation & Implementation, Pertamina

ASARI Daisuke, Representative Director & CEO, Atomis

YAMANAKA Kenjiro, Director & Executive Officer, Head of the Business Development Division, Yachiyo Engineering

UENO Atsushi, Ambassador-Designate of Japan to the Republic of Indonesia

Yuki Haidir, Coordinator for Downstream Oil and Gas Safety, ESDM)

・Background and Objectives of the JSA・

Indonesia has abundant domestic gas resources, including natural gas and biogas. However, the country's vast territory, spread across numerous islands, makes it difficult to build a pipeline network that delivers gas to individual households. Instead, households rely widely on liquefied petroleum gas (LPG), which can be transported in cylinders, and most of it is imported. This dependence on imports poses energy security risks and places a fiscal burden on the country through subsidies and foreign currency outflows. Indonesia therefore urgently needs a way to deliver domestic gas to households without pipelines and break its reliance on imported LPG. Since early 2026, the government has been accelerating its policy of shifting from LPG to domestic gas.

CubiTan®, developed by Atomis, is a next-generation gas container that, like an LPG cylinder, can store and transport domestic gas without pipelines. Methane, the main component of domestic gas, cannot be liquefied at ambient temperature as LPG can, so conventional compressed natural gas (CNG) containers require the gas to be compressed to high pressure. In CubiTan®, the MOF packed inside the container adsorbs the gas, allowing it to be stored at high density even at low pressure. This enables:

• Distributed supply to islands and remote areas without the need for large-scale compression facilities
• Reduced dependence on energy imports by replacing imported LPG with domestic gas
• Effective use of domestic resources such as biomass-derived gas, and reduced methane emissions into the atmosphere

Making the most of these features, Yachiyo Engineering and Atomis are jointly developing the Smart Gas Network business. Rather than relying on the installation of pipelines, the business will use remote monitoring of the containers to centrally manage everything from gas delivery to usage, establishing an integrated system for this purpose. By delivering domestic gas to individual households, the business will contribute to strengthening Indonesia's energy security, reducing its fiscal burden, and lowering carbon emissions.

In October 2023, Yachiyo Engineering and Atomis signed a trilateral Memorandum of Understanding (MoU) on MOF technology with Indonesia's National Research and Innovation Agency (BRIN). Since then, the two companies have pursued research collaboration while continuing to engage with the Indonesian government. The JSA expands this initiative into a partnership with Pertamina to carry out demonstrations using actual gas in a real operating environment.

Through the JSA, Yachiyo Engineering and Atomis will verify the safety, reliability, and cost-effectiveness of CubiTan® in a real-world environment, contributing to the transformation of Indonesia's gas supply and the strengthening of its energy security. The two companies will also accelerate the expansion of the Smart Gas Network business across Southeast Asia.

・Related Releases・

■YEC signs MoU with National Research and Innovation Agency of Indonesia (BRIN) and Atomis Inc.

https://www.yachiyo-eng.co.jp/e/news/2023/10/post_738.html

■Yachiyo Engineering Co., Ltd. invests in Atomis Corporation, aiming for social implementation of a smart gas network project utilizing CubiTan®.

https://www.yachiyo-eng.co.jp/e/news/2024/07/investsinAtomis.html

■Dr. Susumu Kitagawa of Kyoto University is Jointly Awarded the 2025 Nobel Prize in Chemistry

https://www.yachiyo-eng.co.jp/e/news/2025/10/2025NobePrizeinChemistry.html

■PT Pertamina (Persero) Press Release"Pertamina Kaji Teknologi Distribusi Gas Bersama Mitra Jepang, Perkuat Ketahanan Energi Nasional"

https://www.pertamina.com/news/pertamina-kaji-teknologi-distribusi-gas-bersama-mitra-jepang-perkuat-ketahanan-energi-nasional