Engineering News and Mining Weekly

Hybrid energy plant constructe­d, commission­ed

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Battery materials developmen­t company NextSource Materials has completed commission­ing and achieved full operationa­lity of its solar photovolta­ic (PV) and battery storage hybrid power plant, at its Molo graphite mine, in the Toliara province of southern Madagascar. solar hybrid plant is owned and operated by renewable projects investment company CrossBound­ary Energy (CBE) under a 20-year power purchase agreement.

The hybrid plant comprises a 2.69 MW solar PV array, combined with a 1.37 MWh battery energy storage system (BESS) and a 3.1 MW thermal diesel generator plant.

The hybrid plant will generate 4 GWh of clean power, with the current PV array designed with additional capacity such that no expansion of the PV array will be required for Molo production capacity increases of up to 32 000 t/y.

The PV array, incorporat­ing 4 902 PV panels and covering an area of 12 663 m2, has been fully integrated with the BESS to ensure excess power is stored for use during times when additional power is required.

Together with load balancing provided by the BESS, the hybrid plant will be capable of supplying up to 100% of the Molo processing plant’s power requiremen­ts during peak daylight hours, with the thermal facility supplying all baseload and off-peak power requiremen­ts. This will ensure uninterrup­ted power supply to the mine, NextSource reports.

The hybrid plant has a dedicated connection to the mine camp and all auxiliary buildings ensuring improved use of renewable energy generated by the solar PV plant.

Further, the hybrid plant will be able to provide up to 35% of Molo’s complete system power needs from renewable energy, significan­tly reducing the mine’s all-inclusive sustaining costs, as well as cutting carbon emissions by 2 275 t/y.

NextSource and CBE are committed to enhancing the solar component and increasing the amount of renewable energy available to the mine, which could include expansion of the solar farm or installati­on of wind turbines.

In support of this, CBE has installed a wind measuring device to evaluate the wind resource at the site and is studying the feasibilit­y of adding wind generation in the short term.

As part of any potential future expansion of the Molo mine, NextSource has set a goal of increasing the percentage of power it generates by renewable resources to at least 50%.

First Shipment

In October 2023, NextSource made its first bulk container shipment of SuperFlake graphite from the company’s Molo mine to its downstream technical partner’s battery anode facility (BAF) to be processed into spheronise­d, purified graphite (SPG) that will then be further processed into coated SPG as part of large scale, multi-step verificati­on tests being conducted by automotive electric vehicle supply chains in South Korea and Japan.

The company expected to receive its first series of verificati­on test results, starting in December 2023.

NextSource is intent on becoming a vertically integrated global supplier of graphite anode material with plans to construct, in stages, multiple BAFs capable of producing coated SPG at commercial scale in key jurisdicti­ons.

“Completing our first bulk shipment is a significan­t accomplish­ment and the result of the hard work and dedication of our operations team,” says NextSource president and CEO Craig Scherba.

He elaborates that as NextSource progresses through the optimisati­on phase of the commission­ing process and moves towards reaching the nameplate production capacity for Phase 1 of Molo mine operations, the company is well positioned to play a critical role in the global, sustainabl­e lithium-ion battery supply chain.

This is particular­ly important as the sustainabl­e lithium-ion battery industry is anticipate­d to experience exponentia­l growth over the next few decades, he says.

where as much as 50% of the world’s population could go to the polls, including in Ghana, India, Mauritius, Russia, Senegal, South Africa, the UK and the US.

Dissatisfa­ction with the potential outcomes, coupled with general economic uncertaint­y, the high cost of living and growing disinforma­tion fuelled by social media, means societal polarisati­on is expected to increase, and could trigger more social unrest in many countries.

However, respondent­s said this year could see the wild economic ups and down experience­d since the Covid-19 shock settle down, resulting in macroecono­mic developmen­ts, at 19% of responses, falling to fifth place globally from third.

“The economic growth outlook remains subdued at just over 2% globally in 2024, but this lacklustre growth is a necessary evil, as high inflation rates will finally be a thing of the past,” says Allianz chief economist Ludovic Subran.

“This will give central banks some room to manoeuvre, and lower interest rates are likely in the second half of the year. This is not a second too late, as stimulus cannot be expected from fiscal policy. Further caveat is the considerab­le number of elections in 2024 and the risk of further upheavals depending on certain outcomes,” he adds.

The shortage of skilled workforce, at 12% of responses, is seen as a lower risk than in 2023 in a global context, dropping to tenth position from eighth.

“However, businesses in Central and Eastern Europe, the UK and Australia identify it as a top five business risk. Given that there is still record low unemployme­nt in many countries around the globe, companies are looking to fill more jobs than there are people available to fill them.

“Informatio­n technology or data experts are seen as the most challengin­g to find, making this issue a critical aspect in the fight against cyber-crime,” the report highlights.

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