Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 98

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 98
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 may offer a more permanent solution to any remaining emissions from fossil fuel consumption. We are also exploring the potential of carbon capture and mineralisation technologies. In 2024, we focused on finding the best technologies to capture the low concentration carbon dioxide (CO 2 ) from our aluminium smelters’ flue gas. This requires either the adaptation of direct air capture technologies to higher concentration CO 2 or the adaptation of point source technologies to lower concentrations. In both cases, the technology readiness level is often low. In early 2025, we signed a partnership agreement with Hydro to identify and evaluate carbon capture technologies for future implementation in the aluminium smelting process. Separately, in partnership with Carbfix, the characterisation of the ISAL site for mineralisation is progressing, aiming for first injection in 2028. The assessment of the CO 2 mineralisation potential of our co-owned Tamarack project in Minnesota has progressed with the completion of a 1,137 meter exploratory well. More work is planned in 2025 to investigate the carbonation behaviour of the rock.

| Annual Report on Form 20-F 2024 | 51 | riotinto.com |

Strategic report | Our approach to ESG | Climate Action Plan

Action to reduce our emissions The three main areas of our abatement work are: firstly, developing renewable electricity solutions at our Pacific Aluminium Operations and other assets that rely on gas or coal-based power; secondly, transitioning away from diesel in trucks, trains and mobile equipment; and thirdly, tackling hard-to-abate emissions from processing minerals and metals. Additionally, we are developing and investing in nature-based solutions projects.

| Progress in 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Action in 2025                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Renewable electricity                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Repowering Pacific Aluminium Operations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| –Announced 2 renewable PPAs for 2.2GW to supply our Boyne aluminium smelter inGladstone and secured in-principle Queensland government support.–Further explored commercial sourcing strategy at Tomago to secure an energy solution forthe energy supply contract which expires on 31 December 2028.–Signed long-term PPAs to supply our New Zealand Aluminium Smelters with electricitygenerators for a total of 572MW of hydro electricity.                                                                                                                                                                                                                                                                                                                                                                                   | –Secure remaining renewable and firming portfolio for Boynesmelter, pending government support.–