ex04d09electricity

Exhibit 99.4 Notice to ASX/LSE NZAS terminates electricity contract and plans to wind-down operations following strategic review 9 July 2020 Rio Tinto will start planning for the wind-down of operations and the eventual closure of New Zealand Aluminium Smelters (NZAS) following the conclusion of its strategic review which has shown the business is no longer viable given high energy costs and a challenging outlook for the Aluminum industry. As a result, NZAS has given Meridian Energy notice to terminate the power contract, which will end in August 2021, when the wind-down of operations is expected to complete. The strategic review concluded that the smelter, which has made Rio Tinto an underlying loss of NZ$46m in 2019, is not economically viable due to energy costs that are some of the highest in the industry globally, coupled with a challenging short to medium term aluminum outlook. Extensive discussions with a wide range of interested parties have failed to secure a power contract that will enable the operation to become both competitive and profitable. During the next 14 months, NZAS and Rio Tinto will work closely with partners as detailed planning is undertaken to wind-down operations, and eventually close the smelter. Rio Tinto Aluminium chief executive Alf Barrios said “We recognise the decision to wind-down operations at NZAS will have a significant impact on employees, the community and our customers. “It is not a decision we have made lightly and without significant careful consideration. It is very unfortunate we could not find a solution with our partners to secure a power price reduction aimed at making NZAS a financially viable business. We will therefore terminate the power contract and move to close the operation. “We are committed to working with our partners as we progress through detailed planning towards closure and we will do all we can together with the government to find ways to support the Southland community.” NZAS is a joint venture between Rio Tinto (79.36%) and Sumitomo Chemical Company Limited (20.64%). It employs around 1000 people directly and creates a further 1600 indirect jobs in Southland. Page 1 of 2

Contacts media.enquiries@riotinto.com riotinto.com Follow @RioTinto on Twitter Media Relations, United Kingdom Media Relations, Australia and New Zealand Illtud Harri Jonathan Rose M +44 7920 503 600 T +61 3 9283 3088 M +61 447 028 913 David Outhwaite T +44 20 7781 1623 Matt Chambers M +44 7787 597 493 T +61 3 9283 3087 M +61 433 525 739 Media Relations, Americas Matthew Klar Jennifer Nolan T +1 514 608 4429 T +64 4 9161496 M +64 213 819 81 Media Relations, Asia Grant Donald T +65 6679 9290 M +65 9722 6028 Investor Relations, United Kingdom Investor Relations, Australia Menno Sanderse Natalie Worley T: +44 20 7781 1517 T +61 3 9283 3063 M: +44 7825 195 178 M +61 409 210 462 David Ovington Amar Jambaa T +44 20 7781 2051 T +61 3 9283 3627 M +44 7920 010 978 M +61 472 865 948 Clare Peever M: +44 7788 967 877 Group Company Secretary Joint Company Secretary Steve Allen Tim Paine Rio Tinto plc Rio Tinto Limited 6 St James’s Square Level 7, 360 Collins Street London SW1Y 4AD Melbourne 3000 United Kingdom Australia T +44 20 7781 2000 T +61 3 9283 3333 Registered in England Registered in Australia No. 719885 ABN 96 004 458 404 This announcement is authorised for release to the market by Rio Tinto’s Group Company Secretary. Page 2 of 2