Our Businesses
Petroleum
Myanmar: Chauk and Yenangyaung Fields
In central Myanmar, we hold 60% participating interests in two of the largest onshore producing oil fields in Chauk and Yenangyaung under two Improved Petroleum Recovery Contracts (IPRCs) with the Myanma Oil and Gas Enterprise (MOGE). The IPRCs, which commenced on 4 October 1996 for a term of 20 years and 6 months, were subsequently extended for another term of 11 years. We manage the operatorship of the two fields jointly with a joint venture partner through Goldpetrol Joint Operating Company Inc. The adjacent Myanmar concessions, which extend over a total area of approximately 1,800 square kilometres along the Ayeyarwaddy River, are located approximately 580 kilometres north of Yangon.
We have on 22 June 2026 entered into a conditional sale and purchase agreement with Sinopetro Holdings Limited for the proposed disposal of our entire 60% interests in the two fields. We will be seeking the approval of shareholders for the proposed disposal at an extraordinary general meeting to be convened.
Indonesia: Kuala Pambuang Block
Onshore Central Kalimantan, we have a 72.75% participating interest in an exploration block, namely the Kuala Pambuang (KP) Production Sharing Contract (PSC). The PSC with Satuan Kerja Khusus Pelaksana Kegiatan Usaha Hulu Minyak Dan Gas Bumi (SKKMIGAS) was granted on 19 December 2011 with an initial exploration term of 6 years. It was subsequently extended for a further period of 4 years over an area of approximately 1,631 square kilometres. The exploration period, which was last extended further to 14 March 2025, has yet been formally extended. The KP block is located on the southern coast of Kalimantan, in the region 180 kilometres southwest of Palangkaraya.
Silica
West Kalimantan, Indonesia
On 28 May 2024, we entered into a non-binding memorandum of understanding with PT Mitra Investindo Tbk (MITI), a company listed on the Indonesia Stock Exchange, to establish a joint venture to develop, manage and operate silica concessions in Indonesia and to collaborate on silica-based downstream industries including and related to the manufacture of solar cells or solar panels and other associated businesses.
Recognizing the demand for materials that support the green economy, we advanced our prior memorandum of understanding with MITI and formalised joint venture and mandatory conversion loan agreements with the MITI group on 1 July 2025 for the purposes of developing three silica sand concession areas and silica-based downstream industry in Indonesia. The silica sands concessions are currently in the exploration stage. To further solidify our alignment with this silica project, we also acquired a 1.49% long-term equity stake in MITI on 10 November 2025.
Solar Energy
Indonesia: PT PLN Nusantara Power Strategic Partner Long List
We have been included in the PT PLN Nusantara Power (PLNNP) Long List for Strategic Partner since 18 March 2024 for partnership in developing power plant projects in Indonesia. PLNNP is a sub-holding of PT PLN (Persero), the state-owned electricity entity of the Indonesian government.
Indonesia: Powering the Future of Green Mining
At Interra, sustainability is at the heart of our mission. As part of our strategi expansion into high-demand, sustainable resources, our wholly owned Indonesia subsidiary, PT Interra Energy Services (IES), focuses on providing cutting-edge renewable energy solutions and green mining support services. IES aims to bridge the gap between traditional industry needs and a low-carbon future by seamlessly integrating electric heavy equipment, renewable energy, energy storage, digital technology, and various green mining transportation solutions. With the Mining Services Business License (IUJP), IES has the capability to provide green mining services, including the operation of electric heavy vehicles for coal hauling activities. Our commitment to quality, environmental stewardship, and safety is backed by international standards: ISO 9001:2015 (Quality), ISO 14001:2015 (Environment) and ISO 45001:2018 (Occupational Health & Safety).
Indonesia: Collaboration with PT Berkat Bersatu
In the renewable energy sector, we established joint venture and convertible bond agreements in 2025 with PT Berkat Bersatu, an Indonesian contractor specialising in floating solar farms, to participate in the ongoing development of three floating solar plants, Tembesi (35MWac), Karangkates (133MWac), and Saguling (60MWac).
Thailand: Partnership with Royal Manor Group Co. Ltd.
Expanding our solar footprint beyond Indonesia, we partnered with Frontier Construction Co. Ltd. (FC) to develop a renewable energy supply business in Thailand. A joint operating company named Frontier Interra Solar Energy Co. Ltd. (FISE) was incorporated for purpose of conducting joint development operation and management of projects relating to the development, construction, installation, operation and maintenance of solar photovoltaic projects to generate and/or to sell electricity in Thailand.
On 8 May 2026, FISE entered into an agreement with the Air Support Division of the Border Patrol Police to install a rooftop solar power system at the headquarters premises and to sell them electricity produced by the system.
On 13 July 2026, FISE entered into an agreement with the Strisrinan School to design, install, operate and maintain a 264.55-kWp rooftop solar power system at the school premises and to sell them the electricity generated by the system.
On 21 July 2026, FISE entered into an agreement with FC to acquire 5 rooftop solar projects with a total combined capacity of 847.525 kW. The 5 projects have been fully constructed, installed, commissioned, and are in commercial operation.
