Tag Archives: renewables

Zenith Energy gears up to supply 95 MW of hybrid power to Liontown’s Kathleen Valley project

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Zenith Energy has converted the Letter of Award it signed with Liontown Resources to supply electricity to the Kathleen Valley lithium project in Western Australia into a Power Purchase Agreement.

The PPA will see Zenith supply the project with electricity for a period of 15 years as part of a 95 MW hybrid power station setup at the mine.

Zenith has, since the signing of the Letter of Award, announced in September, progressed the planning, engineering and design works for the hybrid power station, including the order of long-lead items such as the wind turbines.

With 46 MW of emission-free power generation capacity, the 95 MW hybrid power station is currently expected to be one of the largest off-grid wind-solar-battery storage renewable energy facilities in the mining industry in Australia.

The thermal components are designed to operate in “engine off” mode at various times, enabling Liontown to operate from 100% renewable energy during periods of high wind and solar resource, the companies say.

The hybrid power station is expected to start up around the same time as the Kathleen Valley process plant is commissioned, currently slated for the first half of 2024.

The plant will include wind generation from five wind turbines each capable of generating 6 MW. A 16 MWp fixed axis solar photovoltaic array coupled to a 17 MW/19 MWh battery energy storage system will provide additional clean energy, supported by synchronous condensers that provide critical system stability and resilience, Zenith said. The thermal power component will comprise 27 MW of gas generation and 5 MW of diesel standby generation.

Kathleen Valley is one of the world’s largest and highest-grade hard-rock lithium deposits and, with an initial 2.5 Mt/y production capacity, is expected to supply circa-500,000 t/y of 6% lithium oxide concentrate, according to the company. With first production expected in June quarter of 2024, the deposit will also produce tantalum pentoxide.

Mitsui and Rio Tinto to explore low-emission supply chain options

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Mitsui & Co has signed a memorandum of understanding (MoU) with Rio Tinto to jointly explore opportunities for reducing emissions and transforming the world’s supply chains.

Under the MoU, Mitsui and Rio Tinto will work closely together to examine more sustainable measures such as reducing the carbon content of raw materials for iron and steel production; developing new renewable energy; supplying alternative fuels such as ammonia, methanol and hydrogen; decarbonisation in marine transportation; decarbonisation of mobility at mining sites; and initiatives like nature-based solutions, carbon credits and others.

The new partnership builds on Mitsui and Rio Tinto’s long history of collaboration, stretching back to the beginnings of the Robe River Joint Venture in Western Australia, which this year celebrated 50 years of iron ore shipments to Japan. The MoU combines Mitsui’s vast network, assets and accumulated industry knowledge with Rio Tinto’s grand-scale supply chain and leading position in the mining & metal industry, the companies said.

Nevada Gold Mines kicks off construction of 200 MWAC TS Solar Facility

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Nevada Gold Mines (NGM) says it is building a 200 MWAC (Megawatt, alternating current) photovoltaic solar facility to accelerate its decarbonisation program in line with Barrick’s Greenhouse Gas Reduction Roadmap.

NGM, majority owned and operated by Barrick Gold Corporation, hosted a celebratory groundbreaking ceremony this week, marking the commencement of construction of its TS Solar Facility. The facility is adjacent to NGM’s TS Power Plant near Dunphy, Nevada.

The solar array will be constructed in a single phase with commercial production expected in the June quarter of 2024.

NGM is partnering with three Nevada-based contractors to complete the civil, solar substation and mechanical construction. Domestically-sourced steel piles are arriving on site in preparation for module foundation construction and tracker installation. At peak, the project is expected to employ approximately 250 people.

NGM Executive Managing Director, Peter Richardson, said: “At NGM, we embed the principles of partnership and sustainability into every decision we make. We continually seek opportunities to source materials and labour as close to our projects as possible. The TS Solar Facility is a great example of how we can partner with local resources on a project that not only benefits the environment, but also provides sustainable long-term social and economic benefits.”

Upon completion, the project will supply renewable energy to NGM’s operations and realise 254,000 t of CO2-equivalent emissions reduction per year, according to NGM. This will result in an 8% emission reduction from the company’s 2018 baseline.

NGM has committed to a 20% carbon reduction by 2025, which will be achieved through the TS Solar facility and the modification of NGM’s TS Power Plant, providing the ability to use cleaner burning natural gas as a fuel source.

Barrick is targeting an overall 30% reduction in emissions by 2030 with the goal of achieving net-zero by 2050.

Taseko Mines using innovation to increase production and efficiencies

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The Taseko Mines story is indicative of the current environment miners find themselves in – maximise productivity to grow margins at existing operations or invest in innovative new methods of extracting critical metals that come with a reduced footprint.

The Vancouver-based company is pursuing both options at the two main assets on its books – the Gibraltar copper mine in British Columbia, Canada, and its Florence Copper project in Arizona, USA.

Gibraltar, owned 75% by Taseko, initially started up in 1972 as a 36,000 t/d operation. It was shut down in 1998 due to low copper prices before Taseko restarted it in 2004. In the years since, the company has invested over $800 million in the mine, increasing the throughput rate to 85,000 tons per day (77,111 t/d), where it’s been operating at since 2014.

The asset now sits as the second largest open-pit copper mine in Canada – with life of mine average annual production of 130 MIb (59,000 t) of copper and 2.5 MIb of molybdenum.

Stuart McDonald, President and CEO of the company, says the company continues to work on the trade-off of upping throughput – potentially past the nameplate capacity – and improving metallurgical recoveries at the operation.

This became apparent in the latest quarterly results, when Taseko reported an average daily throughput of 89,400 tons/d over the three-month period alongside “higher than normal” mining dilution.

The company believes Gibraltar can improve on both counts – mill throughput and mining dilution.

“We were optimistic coming into the new pit (Gibraltar Pit) that, based on the historical data, we could go above 85,000 tons/d as we got settled in and mined the softer ore,” McDonald told IM. “We still believe there are opportunities to go beyond that level, but, at some point, it becomes an optimisation and trade-off between throughput and recoveries.

“In our business, we’re not interested in maximising mill throughput; we’re interested in maximising copper production.”

On the dilution front, McDonald believes the problem will lessen as the mining moves to deeper benches in the Gibraltar Pit.

“As we go deeper, the ore continuity improves, so we hope the dilution effect will continue to improve too,” he said.

“The dilution rate is still not quite where we want it to be, so it’s a matter of looking at our operating practices carefully and following through a grade reconciliation process from our geological model through to assays from our blast holes, assays into the shovel bucket and all the way through to the mill.”

‘Assays into the shovel bucket’?

McDonald explained: “We do use ShovelSense® technology on two of our shovels, so that helps us assess the grade of the material in the shovel bucket.”

To this point, the company has leveraged most value from this XRF-based technology, developed by MineSense, when deployed on shovels situated in the boundaries between ore and waste. This offers the potential to reclassify material deemed to be ‘waste’ in the block model as ‘ore’ and vice versa, improving the grade of the material going to the mill and reducing processing of waste.

ShovelSense has been successful in carrying out this process with accuracy at other copper mines in British Columbia, including Teck Resources’ Highland Valley Copper operations and Copper Mountain Mining’s namesake operation.

McDonald concluded on this grade reconciliation process: “We just have to make sure we are tracing the material through all of those steps and not losing anything along the way. Gibraltar is a big earthmoving operation, so we must continue to keep the material flowing as well as look at the head grade.”

A different type of recovery

In Arizona at Florence Copper, Taseko has a different proposition on its hands.

Florence is a project that, when fully ramped up, could produce 40,000 t of high-quality copper cathode annually for the US domestic market.

It will do this by using a metal extraction and recovery method rarely seen in the copper space – in-situ recovery (ISR).

The planned ISR facility consists of an array of injection and recovery wells that will be used to inject a weak acid solution (raffinate – 99.5% water, 0.5% acid) into copper oxide ore and recover the copper-laden solution (pregnant leach solution) for processing into pure copper cathode sheets. The mine design is based on the use of five spot well patterns, with each pattern consisting of four extraction wells in a 100 ft (30.5 m) grid plus a central injection well. This mine outline and associated infrastructure comes with a modest capital expenditure figure of $230 million.

The company has been testing the ISR technology at Florence to ensure the recovery process works and the integrity of the wells remains intact.

Since acquiring Florence Copper in November 2014, Taseko has advanced the project through the permitting, construction and operating phase of the Phase 1 Production Test Facility (PTF). The PTF, a $25 million test facility, consists of 24 wells and the SX/EW plant. It commenced operations in December 2018.

Over the course of 18 months, Taseko evaluated the operational data, confirmed project economics and demonstrated the ability to produce high-quality copper cathode with stringent environmental guidelines at the PTF, the company says.

McDonald reflected: “We produced over 1 MIb [of copper] over this timeframe and then switched over from a copper production cycle into testing our ability to rinse the orebody and restore the mining area back to the permitted conditions.

“We’re proving our ability to do the mining and the reclamation, which we think is a critical de-risking step for the project.”

Over an 18-month period, Taseko produced 1 MIb from the ISR test facility at Florence

Taseko says Florence Copper is expected to have the lowest energy and greenhouse gas-intensity (GHG) of any copper producer in North America, with McDonald saying the operation’s carbon footprint will mostly be tied to the electricity consumption required.

“Our base case is to use electricity from the Arizona grid, which has a combination of renewables, nuclear and gas-fired power plants,” he said. “In the longer-term, there are opportunities at Florence to switch to completely 100% renewable sources, with the most likely candidate being solar power.

“At that point, with renewable energy powering our plant, we could be producing a copper product with close to zero carbon associated with it.”

Gibraltar has also been labelled as a “low carbon intensity operation” by Skarn Associates who, in a 2020 report, said the operation ranked in the lowest quartile compared with other copper mines throughout the world when it comes to Scope 1 and 2 emissions.

When it comes to the question of when Florence could start producing, Taseko is able to reflect on recent successful permitting activities.

In December 2020, the company received the Aquifer Protection Permit from the Arizona Department of Environmental Quality, with the only other permit required prior to construction being the Underground Injection Control (UIC) permit from the US Environmental Protection Agency (EPA).

On September 29, the EPA concluded its public comment period on the draft UIC it issued following a virtual public hearing that, according to Taseko, demonstrated strong support for the Florence Copper project among local residents, business organisations, community leaders and state-wide organisations. Taseko says it has reviewed all the submitted comments and is confident they will be fully addressed by the EPA during its review, prior to issuing the final UIC permit.

Future improvements

In tandem with its focus on permitting and construction at Florence, and upping performance at Gibraltar, the company has longer-term aims for its operations.

For instance, the inclusion of more renewables to get Florence’s copper production to carbon-neutral status could allow the company to benefit from an expected uptick in demand for a product with such credentials. If the demand side requirements for copper continue to evolve in the expected manner, it is easy to see Taseko receiving a premium for its low- or no-carbon product over the 20-year mine life.

At Gibraltar, it is also pursuing a copper cathode strategy that could lead to the re-start of its SX-EW plant. In the past, this facility processed leachate from oxide waste dumps at the operation.

“As we get into 2024, we see some additional oxide ore coming out of the Connector Pit, which gives us the opportunity to restart that leach operation and have some additional pounds coming out of the mine,” McDonald said.

Alongside this, the company is thinking about leaching other ore types at Gibraltar.

“There are new technologies coming to the market in terms of providing mines with the opportunity to leach sulphides as well as oxides,” McDonald said. “We’re in the early stages of that work, but we have lots of waste rock at the property and, if there is a potential revenue stream for it, we will look at leveraging that.”

JUWI commissions ‘world’s largest’ solar hybrid project at Egyptian mine site

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JUWI says it has commissioned the world’s largest solar hybrid project at Centamin’s Sukari mine in Egypt, helping the gold miner save more than 20 million litres of diesel a year.

The system consists of a 36 MW solar farm and a 7.5 MW battery-energy storage system, which have been integrated into the existing diesel power station at the operation. This will provide savings of up to 70,000 liters of diesel per day, according to JUWI, resulting in an average reduction in diesel consumption of 22 million liters per year.

The system demonstrates the key role of renewable energies in decarbonising the resource sector and already delivers savings ahead of expectations, according to JUWI.

Centamin noted in October that it was in the final stages of commissioning the solar plant at the operation.

The solar system designed by JUWI has maximised the generation with bifacial solar photovoltaic modules and a single axis tracking system, taking advantage of the high irradiance on site. JUWI Hybrid IQ micro-grid technology enables the integration of the solar and battery system into the existing off-grid network and supports the operation of the existing power station, it says.

The additional benefits of the hybrid power solution at Sukari, according to JUWI, include lowering the site’s carbon emissions by an estimated 60,000 t CO2/y and a subsequent reduction in the volume of diesel trucked to the site, plus a reduction in operating costs

Stephan Hansen, COO and Managing Director of JUWI,said: “We are delighted to have been able to deliver this flagship project to Centamin and, furthermore, to have been able to demonstrate the vital role that dependable solar, wind and battery solutions can already play in the transformation of the resource sector on the de-carbonisation pathway.”

JUWI has already achieved success for mining clients globally with the world’s first utility scale solar battery hybrid project at the DeGrussa Copper mine in Australia. This was followed by Agnew Gold (Australia) in 2019 and another six hybrid projects in Australia and Africa for Tier 1 and Mid Tier miners: Esperance, Pan African Resources, Jacinth Ambrosia, Jabiru, Weipa and Gruyere.

Anglo American to remove steelmaking coal business Scope 2 emissions with Stanwell Corp pact

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Anglo American says it has sourced the supply of 100% renewable electricity for its operations in Australia from 2025, agreeing terms for a 10-year partnership with Stanwell Corporation, the
Queensland Government-owned provider of electricity and energy solutions.

The deal will effectively remove all Scope 2 emissions from Anglo American’s steelmaking coal business in Australia from 2025, supporting Anglo American’s progress towards carbon-neutral operations by 2040, it said.

Dan van der Westhuizen, CEO of Anglo American in Australia, said: “Sourcing 100% renewables supply from Stanwell Corporation, linked to two major wind and solar projects in Queensland, is
a big step towards our target of carbon-neutral operations in Australia – and globally – by 2040. We are committed to playing our part to help combat climate change, including accelerating a number of technologies to abate our on-site emissions, from electrifying our truck fleet and other mobile equipment to capturing the methane from our steelmaking coal seams.

“I am delighted that we are able to support Stanwell Corporation in its investment in 650 MW of renewables capacity for Queensland. Today’s deal brings significant environmental benefits
and is net present value-positive compared with our current energy mix, while underwriting a large investment in renewable energy generation for Queensland.”

Anik Michaud, Anglo American’s Group Director of Corporate Relations and Sustainable Impact, said: “Combined with the agreements we already have in place for all our South America operations, from 2025 we expect to be drawing 60% of our global electricity requirements from renewable sources, transforming our Scope 2 emissions profile. We are committed to producing the metals and minerals that we need to mitigate the extent of global warming in the most responsible and sustainable way.”

The partnership between Anglo American and Stanwell underwrites investment in the two major Queensland renewable energy projects – Clarke Creek Wind Farm in Central Queensland and
Blue Grass Solar Farm near Chinchilla, Anglo American says.

Evolution Mining taps AGL Energy Ltd for new power supply at Cowal

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Evolution Mining Limited says it has secured a competitive, long-term power supply agreement for its Cowal gold operation, in New South Wales, Australia, under a new eight year partnership with AGL Energy Limited, commencing in January 2023.

Power costs represent approximately 7% of Evolution’s total costs. This agreement provides ongoing long-term security of power supply to Cowal at competitive pricing which is consistent with Evolution’s previously reported financial year 2023 guidance and financial year 2024 outlook, it said.

This long-term agreement also includes a renewable energy component.

Under the terms of the partnership with AGL, a growing portion of the power will be from renewable sources and provides Evolution a clear pathway to meeting its commitment to reduce energy (Scope 1 and Scope 2) emissions by 30% by 2030, the miner said.

Evolution’s Executive Chair, Jake Klein, said: “This is a very important milestone for Evolution. In a very challenging energy market, we have been able to secure both a long-term, competitively priced power contract for Cowal and a growing renewable component that provides us a clear pathway to reducing our energy emissions by 30% by 2030.

“We will continue to look for new ways to further reduce emissions from our fixed plant and mobile equipment to deliver on our net-zero commitment by 2050.”

AGL General Manager, Commercial and Industrial Customers, Ryan Warburton, said: “AGL has been working with Evolution Mining for a tailored solution for their Cowal Gold Mine to help lower their energy costs, provide ongoing long-term security of power supply and assist in reducing their carbon emissions.

“From leading food, agri-business and now to gold mines, AGL is working with our customers to develop bespoke renewable energy solutions to meet their changing needs. This announcement with Evolution Mining is another great example of how AGL is partnering with industry to help them reduce their carbon emissions and lower their energy costs. Through innovative partnerships like this, we are delivering on a low-carbon future with our customers and communities as we transition towards net zero.”

The Cowal mine produced 227,105 oz of gold in Evolution’s 2022 financial year. The company has a plan to expand production to 350,000 oz/y as the mine goes underground.

Zenith Energy, Liontown go big with proposed hybrid power plan at Kathleen Valley lithium project

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Zenith Energy and Liontown Resources have partnered on what they say is Australia’s largest off-grid renewable energy hybrid power station project.

The letter of award between the two companies covers a potential contract to build, own, and operate the hybrid power station in Australia at Liontown’s Kathleen Valley Project in Western Australia.

The award will see Zenith Energy construct a 95 MW hybrid power station at Kathleen Valley in the Goldfields-Esperance region, which includes 30 MW of wind capacity, 16 MWp fixed axis solar PV array and a 17 MW/19 MWh battery energy storage system (BESS).

Kathleen Valley is one of the world’s largest and highest-grade hard-rock lithium deposits and, with an initial 2.5 Mt/y production capacity, is expected to supply circa-500,000 t/y of 6% lithium oxide concentrate, according to the company. With first production expected in June quarter of 2024, the deposit will also produce tantalum pentoxide.

Zenith Managing Director, Hamish Moffat, says the partnership will allow Zenith Energy to demonstrate its innovation, flexibility and expertise to deliver low-carbon emitting hybrid power solutions.

“Zenith Energy is proud to continue to play a lead role in the energy transition, and to provide like-minded partners with a glide path to net zero,” he said. “The project also further demonstrates Zenith Energy’s continued commitment to increasing the proportion of renewable generation in our portfolio.”

Artist impressions of what the Kathleen Valley site will look like (and above)

Moffat says the thermal components of the power station are designed to operate in ‘engine off’ mode at various times, delivering 100% renewable energy generation to Kathleen Valley.

“It’s an exciting opportunity to showcase our expertise, and the ability of renewables to deliver reliable, continuous supply, to power an entire mining operation,” he said. “It will once again raise the industry benchmark in renewable energy integration and demonstrates our commitment to power decarbonisation.”

Other unique aspects of the agreement include:

  • Largest off-grid hybrid power station in Australia: The hybrid power station is currently expected to have the largest off-grid renewable capacity of any mining project in the country, with 46 MW and 17 MW BESS; and
  • Renewable incentives: A combination of incentives to produce renewable power over thermal power together with a renewable energy guarantee will allow Liontown to meet and exceed its renewable energy factor target of 60% at startup and beyond.

Liontown Managing Director and CEO, Tony Ottaviano, says Liontown is delighted to partner with such an experienced and highly competent power producer.

“We believe Zenith Energy is an ideal partner to delivery an industry leading hybrid power station to meet Liontown’s energy needs and requirements for a high-capacity renewable solution,” Ottaviano said. “The hybrid power station proposed will enable Liontown to exceed our target of achieving at least 60% renewable energy at project start-up and beyond.”

Moffat says Zenith Energy is engaged with Traditional Owners, recently announcing a collaboration with Tjiwarl Contracting Services to work together to deliver low carbon emission power solutions for miners and communities on Tjiwarl native title determined lands.

Zenith Energy and Liontown have agreed key commercial terms and are working to finalise arrangements under a binding long term build, own and operate power purchase agreement.

Westgold signs gas and renewables agreements with Pacific Energy, CEFA

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Westgold Resources, in line with its ongoing objectives to enhance profitability and focus on cost optimisation, has executed a new Electricity Purchase Agreement with independent power provider Pacific Energy and a new LNG Supply Agreement with Clean Energy Fuels Australia (CEFA).

These agreements will deliver substantial operating cost savings to Westgold in its 2023-2024 financial years onwards of around A$100/oz ($68/oz) at the current diesel price and supports its commitment to environmental, social and governance (ESG) initiatives that will reduce the company’s long term greenhouse gas emissions, it said.

Under the build-own-operate agreement with Pacific Energy, Westgold will materially reduce diesel consumption by replacing six diesel-fired power stations (two owned and operated by Pacific Energy) with four new, highly efficient gas-fired power stations to incorporate renewable energy options and use solar power and battery storage across the Bryah and Murchison Operations. Critically for Westgold, this transition to a mixed generation platform includes renewables and gas and is expected to reduce carbon emissions from diesel-powered generators by over 57%, due to the higher integration of renewables (34% solar) and cleaner fuel (gas versus diesel), the company said.

Westgold’s first new Pacific Energy power station will be commissioned in July 2023 at the Tuckabianna processing hub, with the three additional new power plants scheduled for commissioning from September 2023.

Westgold has concurrently signed a bulk LNG supply agreement with CEFA. CEFA will supply Westgold from its expanded LNG plant located at Mt Magnet (pictured), 80 km south of Cue. This plant is currently providing LNG to another Pacific Energy power plant in the Murchison region and provides a substantial advantage due to its proximity to Westgold’s operations. CEFA will fund and construct satellite LNG facilities (primarily comprising LNG storage and re-gasification equipment) at Westgold’s project sites, with the LNG trucked direct from its plant at Mt Magnet.

The new gas and solar power station to be commissioned at Westgold’s Meekatharra operations will also serve to simplify power generation by removing smaller diesel fired power stations at the Paddy’s Flat and Bluebird underground mines and providing them power from a larger gas-fired power station via overhead powerlines, according to the company.

Westgold Managing Director, Wayne Bramwell, said: “The transition to a cleaner, more efficient energy platform that utilises renewables and gas in financial year 2023 is strategic for Westgold. It is an important step in meeting our ESG targets but is pivotal to reducing the operating cost of our business.

“Westgold has selected two industry leaders in Pacific Energy and CEFA to work with us in this transition and we look forward to seeing the benefits that integrating renewable power and cleaner energy alternatives can deliver to our business and the communities within which we work.”

Aggreko urges miners to embrace renewable power generation now

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With decarbonisation at the forefront of miners’ agendas, one of the world’s leading provider of mobile and modular power solutions, Aggreko, has released its top tips to help miners decarbonise now and into the future.

Aggreko’s Global Head of Mining, Rod Saffy, said while miners were embracing the global energy transition, some were unsure where to begin.

“For some miners it’s about knowing where to start and they may be weighing up the cost, risk and threat of new technology in the future,” he said.

“Fortunately, technology isn’t in the same place as it was five years ago or even two years ago. Some of the renewable power technologies available today, combined with thermal generation in a hybrid solution, offer the same – if not better – levels of reliability and competitiveness than traditional thermal technology.”

Saffy said power generation companies were taking significant steps to support miners on their respective paths to net-zero emissions.

“Increasingly, power companies are offering renewables such as solar and wind energy to off-grid mines, and we often integrate those with battery storage solutions and thermal microgrids,” he said.

“If you consider a hybrid power solution – where you switch in renewables to your power mix alongside fossil fuels – your operation will be more flexible and can scale up and down as needed.

“Our approach means miners can also partner with us, long term, without being tied down to one fuel type for their power source, and new technology is introduced as it becomes viable.

“Integrating renewables in this manner will result in greater cost savings and efficiencies for your project.”

One solar and thermal hybrid solution Aggreko delivered for a remote gold mine in Africa resulted in more than 12% savings in fuel (about 10,000 litres a day) and the contract offered meant the miner did not have to come up with capital to invest in the solar plant.

Another example Aggreko is working on, Saffy said, is a 25.9 MW hybrid solar and thermal power solution for the Salares Norte open-pit mine in Chile.

“It is a ground-breaking solution designed to provide power for the entire mine, which sits at an altitude of 4,500 m in the Andes mountain range and is 190 km from the nearest town,” he explained.

“Once complete, the hybrid power plant is expected to achieve $7.4 million in cost of energy savings over the next decade, a further $1.1 million in carbon tax offset over the life of the mine, in addition to 104,000 t of carbon emissions savings.

“The system will surpass the Chilean government’s environmental standards as well as Gold Fields’ requirement for a minimum of 20% renewable power generation for mining operations.”

Saffy said the pathways to decarbonisation that held the most appeal for miners currently included:

  • Hybrid power plants (as mentioned): These combine renewables (eg solar, wind) with thermal generation and battery storage, benefitting areas with limited or no access to permanent power. These are generally cost-competitive. Once solar or wind plants are installed, their generation running costs are relatively low and at zero emissions;
  • Virtual gas pipelines: Gas power generation can offer a greener and more cost-effective alternative to diesel and heavy fuel oil. A virtual pipeline is a substitute – and an alternative – for a physical pipeline. Gas is instead transported as LNG or CNG to the point of use by sea, road, or rail. For mines not connected to a physical pipeline and looking to switch to gas from diesel, a virtual pipeline model simply imitates their current supply solution. For users who are connected to a gas pipeline but are looking to supplement insufficient or unreliable pipeline capacity, the virtual power plant solution has several advantages over diesel; and
  • Renewable energy: Renewable energy power systems are an effective way of tapping into natural resources to provide power, such as wind farms, hydro power and solar. The challenge is their reliability related to weather, hence why, if power is interrupted for any reason, it is important to ensure they’re backed by with batteries or a temporary thermal power solution.

A significant future fuel in this space will be hydrogen. Investment in hydrogen is on the rise because of the role it can play in supporting a global transition to net-zero. Its versatility and compatibility with existing furnaces, engines and generators make it particularly appealing for the mining industry, according to Aggreko.

Saffy said energy sources likely to become more prevalent in mining during the next 10 years included biofuels (would become less expensive), hydropower, energy storage (such as pumped, mechanical flywheel), and gas generation which runs with a hybrid renewable system. While it is increasingly used now as power source, wind and solar power are also expected to gain more momentum.

Aggreko is also experimenting with mobile wind solutions, re-deployable solar panels and tidal wave power (though tidal wave power might not be for the mining industry yet). The company is also accelerating its investments in hydrogen technology, with trials underway in Europe on two different technologies, where Aggreko is collaborating with lead customers and partners trialling hydrogen generators and fuel cell battery hybrids.

“It’s a very exciting time in the mining sector, and it will be amazing to see the innovations presented during the next few years as miners and energy companies collaborate and come up with new ideas for a greener future,” Saffy said.

“The key though is to start now – you can embrace renewables now into your energy mix because, done correctly, cost and emission savings can be greatly reduced without compromising reliability.”

Aggreko has its own net-zero goals by 2050 and has a 2030 target to reduce diesel use in its customer solutions by 50%.