Rio Tinto completes construction of its solar power plant at Diavik Diamond Mine

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02 July 2024

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YELLOWKNIFE, Canada--(BUSINESS WIRE)-- Rio Tinto’s Diavik Diamond Mine has completed installation of its 3.5 megawatt capacity solar power plant in Canada’s Northwest Territories. The project represents the largest off-grid solar power plant across Canada’s territories.

The 6,620-panel facility is expected to generate 4.2 million kilowatt-hours of solar energy annually, reducing diesel consumption at Diavik by one million litres per year and cutting greenhouse gas (GHG) emissions by 2,900 tonnes of CO₂ equivalent. This is comparable to removing 630 cars from the road each year.

The solar power plant will provide up to 25% of Diavik’s electricity during closure work, with commercial production at the mine expected to end in 2026 and closure to run until 2029. The facility is equipped with bi-facial panels which not only generate energy from direct sunlight, but also from the light that reflects off the snow that covers Diavik for most of the year.

The solar project complements a wind power plant at Diavik, which has been operating since 2012 and is the largest wind power installation in Canada’s North, having generated over 195 million kilowatt-hours of electricity since activation.

Chief Operating Officer of Diavik Diamond Mine Matthew Breen said: “The largest off-grid solar power plant in Canada’s North is our latest commitment to the environment we live and work in, and will improve the energy efficiency of our operations at Diavik. We are proud to lead the way for large-scale renewable energy projects in Canada’s North.”

The project was supported by C$3.3 million in funding from the Government of the Northwest Territories’ Large Emitters GHG Reducing Investment Grant Program.

It is the first project in the Northwest Territories to benefit from funding from the Large Emitters Grant, which sets aside a portion of carbon tax paid by large operations such as Diavik for projects that commit to GHG reduction projects in the territory.

Northwest Territories’ Minister of Infrastructure Caroline Wawzonek said: “I commend Rio Tinto for the completion of the largest off-grid solar plant in Canada’s North at the Diavik mine. The project demonstrates Rio Tinto’s leadership when it comes to reducing emissions, and signals potential for leadership in the renewable energy sector in and by the North. The Government of the Northwest Territories is proud to have contributed to the project through the Large Emitters GHG Reducing Investment Grant program, which provides funding to industry to reduce emissions as part of our made-in-the-NWT approach to the federal carbon tax.”

Construction began in February 2024, contracted to Whitehorse-based Solvest Inc. and the Indigenous-owned Tłıchǫ Investment Corporation, with support from Diavik. Approximately 30% of the construction workforce came from the Tłıchǫ Investment Corporation.

CEO of Solvest Inc. Ben Power said: “Building off the success of their wind farm constructed in 2012, Diavik has taken another significant step forward in demonstrating the viability of renewable energy for Northern and off-grid mines. Solvest is proud to have had the opportunity to work with our partners at Tłıchǫ Investment Corporation to construct the largest off-grid solar power plant in Canada’s North. We believe this project provides a blueprint to facilitate the integration of solar into mines across Canada and in Northern regions.”

Diavik is working with the Government of the Northwest Territories and community partners to determine how its renewable energy infrastructure can best benefit the region following closure.

Rio Tinto is progressing decarbonisation initiatives across its global operations, with the aim of reducing its Scope 1 and 2 GHG emissions by 50% by 2030 and to achieve net zero across its operations by 2050.

Rio Tinto to build two solar farms on Australia’s Gove Peninsula

Staff Writer | July 3, 2024 |\

Rio Tinto Gove is located 650km east of Darwin in North East Arnhem Land. Credit: Rio Tinto

Rio Tinto (ASX: RIO) is looking to build two new 5.25-megawatt (MW) solar farms on Gove Peninsula in the Northern Territory, as the Australian miner works to secure a more sustainable power supply for the region beyond mining.


Rio Tinto’s Gove site in Australia’s Northern Territory has been supplying the global aluminum industry with bauxite for more than 40 years. The bauxite is shipped internationally as well as being used to supply the Queensland Alumina Limited and Yarwun refineries in Gladstone, Queensland. These refineries produce alumina as feedstock for Rio Tinto’s Australian aluminum smelting operations and for sale on the international market.

Bauxite mining operations in the Gove Peninsula are expected to end later this decade and work is already underway to support the closure of the operation and rehabilitation of the refinery, mine site and tailings facilities.

The two solar farms will be built on Gumatj and Rirratjingu country, the largest Traditional Owners groups who are signatories to the RTA Gove Traditional Owners Agreement. The solar farms will be built on Rio Tinto leases following agreements with the Traditional Owner groups on the location of the facilities.

The solar farms will help underpin a low-carbon future for the Gove community after mining operations cease, towards the end of the decade, Rio said.

Scotland-based mobile modular power provider Aggreko has been engaged to construct, own and operate the solar farms for Rio Tinto for up to 10 years, beginning construction in July 2024 and with completion scheduled for early 2025. The two sites will have a combined capacity of 10.5MW.

“The Gove solar project is part of our shared vision with traditional owners to leave a positive legacy for the Gove Peninsula communities after bauxite mining ceases,” Rio Tinto Gove operations’ acting general manager Shannon Price said in a news release.

“We’re excited to work with the Gumatj and Rirratjingu clans to provide an opportunity to secure alternative electricity generation assets on their country and to discuss opportunities to commercialize energy infrastructure in the future,” Price said.

“We are working in partnership with the Northern Territory government and traditional owners to ensure a smooth transition of leased land and town assets and infrastructure as Rio Tinto prepares to stop mining at Gove later this decade.”

According to Rio, the group is committed to helping to plan for the region’s future, which includes providing options for reliable, affordable and environmentally sustainable infrastructure.

“The solar farms are also part of our ongoing commitment to decarbonize our business. Once operational, they are expected to reduce annual CO2e emissions at our Gove operations by up to 17%,” Price said.

“We intend for these farms to underpin sustainable power for the region beyond mining.”

When complete, the solar farms are expected to reduce the region’s annual diesel consumption by about 20%, or 4.5 million litres a year, and lower annual carbon emissions by over 12,000 tonnes, which is the equivalent of taking 2,800 internal combustion engine cars off the road, Rio estimates.