SANTOS LIMITED — Capital/Financing Update 2021

Sep 13, 2021

ASX / Media Release

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14 September 2021

Bayu-Undan Joint Venture and Timor-Leste’s ANPM sign MOU on Bayu-Undan Carbon Capture and Storage

Santos, as operator of the Bayu-Undan Joint Venture, today announced it had signed a Memorandum of Understanding (MOU) with the Timor-Leste regulator Autoridade Nacional do Petróleo e Minerais (ANPM) to progress Carbon Capture and Storage (CCS) at BayuUndan in the Timor Sea.

The MOU details the areas the Bayu-Undan Joint Venture and the ANPM, with the support of the Timor-Leste Government, will work on collaboratively to test the viability of repurposing the existing Bayu-Undan facilities and using the Bayu-Undan reservoir for CCS. These include sharing technical, operational and commercial information, assessing the regulatory framework, evaluating local capacity opportunities and establishing a decision timeline.

Santos Managing Director and Chief Executive Officer Kevin Gallagher said: “We believe the Bayu-Undan reservoir and facilities have the potential to be a world-leading CCS project and we are delighted to be working together with the ANPM and the Timor-Leste Government to progress this opportunity.

“CCS is recognised by the International Energy Agency and the Intergovernmental Panel on Climate Change as being a critical technology to achieve the world’s climate goals. Santos’ experience with the globally-competitive Moomba CCS project in outback South Australia will bring invaluable experience to the project.

“CCS at Bayu-Undan has potential capacity to safely and permanently store approximately 10 million tonnes per annum of CO2 and could build a new job-creating and revenuegenerating industry for Timor-Leste.

“This has the potential to be a win-win; good for the environment, good for industry and opening up an exciting opportunity for the people of Timor-Leste, so we look forward to progressing this MOU in partnership with the ANPM.”

ANPM President Florentino Soares Ferreira said: “This is a milestone for Timor-Leste. With the signing of the CCS MOU between Santos (representing its Joint Venture partners) and ANPM proves that Timor-Leste is proactively taking the lead in integrating its oil and gas sector towards Timor-Leste’s commitment of accelerating decarbonization and meeting the U.N. net zero target by 2050.

“Despite Timor-Leste being one of the lowest emission countries in the world, and that the Paris Agreement provides waiver or concession to the developing and less developed nations such as Timor-Leste; we understand that carbon trading or carbon credits market is an integral part of our future economy. We don’t want to miss this opportunity; and I believe this will become one of the largest CCS projects in the Southern Hemisphere. This will enable both Timor-Leste and Australia to exploit its untapped resources in meeting energy

Media enquiries James Murphy +61 (0) 478 333 974 james.murphy@santos.com

Investor enquiries

Santos Limited ABN 80 007 550 923 GPO Box 2455, Adelaide SA 5001 T +61 8 8116 5000 F +61 8 8116 5131 www.santos.com

Andrew Nairn +61 8 8116 5314 / +61 (0) 437 166 497 andrew.nairn@santos.com

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demands as well as offsetting its carbon emissions and transitioning towards carbon neutral economies.”

Santos has a 43.4% operated interest in Bayu-Undan. The remaining interest is held by SK E&S (25%), INPEX (11.4%), Eni (11%) and Tokyo Timor Sea Resources (9.2%).

Ends.

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This ASX announcement was approved and authorised for release by Kevin Gallagher, Managing Director and Chief Executive Officer.

Santos Limited ABN 80 007 550 923 GPO Box 2455, Adelaide SA 5001 T +61 8 8116 5000 F +61 8 8116 5131 www.santos.com

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