EXHIBIT 99.5

Notice to ASX/LSE

Rio Tinto to install carbon free aluminium smelting cells using

first ELYSISTM technology licence

28 June 2024

MONTRÉAL, Canada – Rio Tinto will install carbon free aluminium smelting cells at its Arvida smelter

in Québec, Canada, using the first technology licence issued by the ELYSIS joint venture. This

investment will support the ongoing development of the breakthrough ELYSISTM technology and allow

Rio Tinto to build expertise in its installation and operation.

Rio Tinto will design, engineer, and build a demonstration plant equipped with ten pots operating at

100 kiloamperes (kA). The plant will be owned by a new joint venture in which Rio Tinto and the

Government of Québec, through Investissement Québec, will invest $179 million (CAN$235 million)

and $106 million (CAN$140 million) respectively as equity partners, for a total investment of US$285

million (CAN$375 million).

This facility will use the same technology that has been successfully demonstrated at the ELYSIS

Industrial Research and Development Center in Saguenay—Lac-St-Jean. This pilot operation will be a

critical step in Rio Tinto’s learning journey towards full scale industrialization of the ELYSISTM

technology.

The plant will have the capacity to produce up to 2,500 tonnes of commercial quality aluminium per

year without direct greenhouse gas emissions, with first production targeted by 2027. It will be located

adjacent to the existing Arvida smelter, allowing the use of the current alumina supply and casting

facilities.

Rio Tinto Aluminium Chief Executive Jérôme Pécresse said: “This investment will further strengthen

Rio Tinto’s industry-leading position in low-carbon, responsible aluminium in North America with our

hydro-powered smelters and our recycling capacity. Becoming the first to deploy the ELYSISTM

carbon-free smelting technology is the next step in our strategy to decarbonize and grow our

Canadian aluminium operations. In addition to delivering even lower-carbon primary aluminium for our

customers, this investment will allow Rio Tinto to build its expertise on installing and operating this new

technology, while the ELYSIS joint venture continues its research and development work to scale it up

to its full potential.”

Québec Minister of Economy, Innovation and Energy; Minister for Regional Economic Development;

and Minister for the Metropolis and the Montreal Region, Pierre Fitzgibbon, said: “ELYSISTM is a truly

disruptive technology for the industry, and it's thanks to Quebec expertise that we are the first in the

world to produce GHG-free aluminium. This is a technological innovation with unprecedented benefits

for our aluminium sector, which remains an undisputed world leader.”

The Honourable François-Philippe Champagne, Canada’s Minister of Innovation, Science and

Industry, said: “Canada has all it takes to be the global green supplier of choice, which is why our

government is collaborating with key industry actors like Rio Tinto to produce low carbon aluminium.

Groundbreaking projects such as the ELYSISTM smelting technology will ensure Canada remains at

the forefront of the economy of tomorrow while also staying focused on its carbon reduction goals.

When economic benefits are paired with a commitment to developing green solutions, it’s a win for

Canadian industry, our cleantech ecosystem and our workers.”

ELYSIS joint venture partner Alcoa will have the option to purchase from Rio Tinto a portion of the

aluminium produced over the first four years at the Arvida demonstration plant through an offtake

agreement. 

The joint venture is continuing its research and development program to scale up the ELYSISTM

technology and has completed the construction of larger prototype 450 kA cells at the end of an

existing potline at Rio Tinto’s Alma smelter. ELYSIS has begun commissioning these industrial

prototype cells, with the start-up sequence set to begin in 2024.

Notice to ASX/LSE2 / 3

Contacts

Please direct all enquiries to media.enquiries@riotinto.com

Media Relations, United Kingdom Matthew Klar M +44 7796 630 637 David Outhwaite M +44 7787 597 493	Media Relations, Australia Matt Chambers M +61 433 525 739 Jesse Riseborough M +61 436 653 412 Alyesha Anderson M +61 434 868 118 Michelle Lee M +61 458 609 322	Media Relations, Americas Simon Letendre M +1 514 796 4973 Malika Cherry M +1 418 592 7293 Vanessa Damha M +1 514 715 2152
Investor Relations, United Kingdom David Ovington M +44 7920 010 978 Laura Brooks M +44 7826 942 797	Investor Relations, Australia Tom Gallop M +61 439 353 948 Amar Jambaa M +61 472 865 948
Rio Tinto plc 6 St James’s Square London SW1Y 4AD United Kingdom T +44 20 7781 2000 Registered in England No. 719885	Rio Tinto Limited Level 43, 120 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404

This announcement is authorised for release to the market by Andy Hodges, Rio Tinto’s Group Company

Secretary.

riotinto.com

Notice to ASX/LSE3 / 3