Tag Archives: juwi

juwi South Africa to build solar PV plant at Pan African’s Evander Mines

Pan African says it has entered into an engineering, procurement and construction (EPCM) agreement with juwi South Africa to construct its 9.975 MW solar photovoltaic plant at Evander Mines in the country.

Construction will commence in the March quarter of 2021, with first power expected in the September quarter of 2021, it said.

Part of the international juwi Group, juwi South Africa is one of the world’s leading renewable energy companies. To date, juwi South Africa has built six utility scale solar plants totalling 207 MW under the South African Government’s Renewable Energy Independent Power Producers Programme, Pan African said.

The Evander Mines solar photovoltaic plant will utilise bi-facial module technology to maximise its yield and it will be constructed on previously disturbed land owned by Evander Mines, Pan African said. The plant will provide an estimated 30% of Elikhulu’s power requirement during daylight hours and is expected to materially reduce electricity costs at this operation. Furthermore, the Evander solar photovoltaic plant is expected to enhance the reliability of the power supply during daylight hours and result in an expected CO2 saving of more than 26,000 tonnes in its first year of its operation.

Elikhulu has capacity to process an estimated 1 Mt/mth of tailings with a projected output of approximately 55,000 oz/mth of gold.

The total cost of the Evander solar photovoltaic plant is ZAR140 million ($9.4 million), with a calculated payback on this investment of less than five years, Pan African said.

“This solar photovoltaic plant further reduces Elikhulu’s environmental impact and is just one of a number of initiatives in the group’s commitment to producing high-margin ounces in a safe and efficient manner, while investing in local communities and minimising the environmental impact of operations,” it added.

Pan African is also assessing the merits of expanding the Evander Mines solar photovoltaic plant in due course to provide for a clean energy feed to its Egoli project, and of a similar solar photovoltaic plant at the group’s Barberton Mines operations.

Pan African CEO, Cobus Loots, said: “The Evander Mines solar photovoltaic plant is integral to the group’s purpose of ‘Mining for a Future’ and pursuing ESG initiatives that go beyond compliance. This plant will be one of the first of its kind in the South African mining space. We look forward to commissioning the operation during 2021, on budget and on schedule.”

Gold Fields Agnew hybrid power project starts up

Global distributed energy producer EDL has switched on its 23 MW power station, which integrates photovoltaic solar with gas and diesel generation, to power Gold Fields’ Agnew gold mine, in Western Australia.

This switch-on completes the first stage of one of Australia’s largest hybrid renewable micro-grid projects, according to EDL.

EDL CEO, James Harman, said: “With this project, EDL and Gold Fields are leading the way towards clean, renewable energy to power remote, off-grid mining operations without compromising reliability or power quality.”

Gold Fields Executive Vice President: Australasia, Stuart Mathews, said: “The power station we are officially opening today integrates 4 MW solar generation from our new solar farm and is underpinned by 19 MW of gas and diesel generation. It will soon include other renewable energy technologies coming online in the next stage of the project.”

He referred to the importance of the A$112 million ($76 million) project to both Gold Fields and the broader industry: “This is a significant milestone for both the Agnew gold mine and the broader Gold Fields Group, demonstrating our ongoing commitment to strengthening our energy security, optimising energy costs and reducing our carbon footprint through the adoption of new technologies. We are hopeful that this will also enable other companies to consider the options for decarbonising their operations.”

The second stage of the project, which includes 18 MW wind generation, a 13 MW battery and an advanced micro-grid control system, is currently under construction and due to be completed in mid-2020.

It has the backing of the Australian Renewable Energy Agency with a recoupable A$13.5 million contribution to the construction cost of the project.

Once completed, the Agnew Hybrid Renewable project will be the first to use wind generation as part of a large hybrid micro-grid in the Australian mining sector. It will have a total installed generation capacity of 54 MW, with renewables providing over 50% of the Agnew gold mine’s power requirements, with the potential to increase this further by adopting innovative operational practices such as the dynamic load shedding, renewables forecasting and load control management.

As part of the EDL remit, juwi Renewable Energy, the Australia subsidiary of international project developer juwi, delivered a 4 MW Single Axis Tracking PV installation together with cloud forecasting and an advanced micro-grid control system to enable integration with the mine off-grid network.

Siemens and juwi push forward with microgrids for mining systems

Siemens and renewable energy developer juwi have joined forces to enter into a strategic technology partnership to focus on microgrids for the mining industry.

An agreement, signed this week, will see the two companies aim to roll-out and continually develop the advanced microgrid control system that enables the seamless integration of power from renewable energy to a mine’s off-grid power supply, they said.

The Siemens Sicam based microgrid control platform, a proven and tested technology Siemens says, is the basis for juwi´s Hybrid IQ microgrid controller. juwi, meanwhile, brings industry-specific domain knowhow and a track record of planning and executing renewable energy projects at mine sites.

Juwi says: “The solution adapts to changing orebodies, processing and power requirements whilst providing detailed reporting and analysis to operations teams and management. Together, the strategic partners create a unique, standardised solution for the mining market.”

This will simplify the use of renewable energy for mines and help provide a cost-effective and reliable power supply, especially for mine sites that operate off the grid, according to the companies.

Robert Klaffus (left), CEO Digital Grid at Siemens Smart Infrastructure, said: “Microgrids can bring high levels of reliability and improved energy quality to energy-intensive industries such as mining; and are an attractive alternative when autonomous power supply is needed.

“We are looking forward to the technology cooperation with juwi on microgrids and believe it will boost the commercial appeal of renewable energy to the mining industry.”

Stephan Hansen (right), a Board Member and COO of the juwi Group, added: “Renewable energy will not only future-proof mining operations, but reduce cash operating costs today. The centrepiece to this is the juwi Hybrid IQ system. It enables us to provide hybrid power that goes far beyond what has been industry practice until now.”

The co-operation between juwi and Siemens has already resulted in the successful delivery of the solar power plant at Gold Fields’ Agnew gold mine in Australia, the companies said. A renewable and low-carbon energy project at the mine is being developed by global energy group EDL. juwi is working with EDL to deliver 4 MW Single Axis Tracking PV installation together with cloud forecasting and an advanced microgrid control system to enable integration with the mine off-grid network at Agnew.

The partnership has also provided hybrid power to Australia’s largest and oldest marine research station on the Great Barrier Reef of Queensland. Heron Island now uses juwi Hybrid IQ to combine solar with a redox flow battery to replace diesel fuel.

“Both projects showcase the next generation of hybrid systems and enable mine sites to significantly lower their carbon footprint and their cash operating costs,” they said.

Orion Minerals looks at renewable options for Prieska zinc-copper project

Orion Minerals, through its subsidiary, Repli Trading No 27, has entered into a collaboration agreement with juwi Renewable Energies South Africa to investigate renewable energy generation for its Prieska zinc-copper project in the Northern Cape of South Africa.

The preliminary scope is to investigate the feasibility of generating and supplying 35 MW of electricity for Prieska, from a hybrid power system using integrated wind and solar technologies. The renewable energy generation site will be located within 20 km of Prieska, making the establishment of a dedicated feed via an overhead power transmission line possible, Orion said.

juwi is part of the international juwi Group, one of the world’s leading renewable energy companies. Its business is focused on both solar energy and onshore wind energy. To date, juwi South Africa has built five utility-scale solar plants totalling 121 MW and developed the 138 MW Garob Wind Farm, which will soon start construction.

juwi South Africa also participates in the South Africa Government’s Small Independent Power Producer Program and operates and maintains all its solar projects on behalf of their owners.

In Australia, juwi was recently responsible for the project development, design, construction and now operations of a $40 million, 10 MW solar power facility which came into commercial operation in 2016 at Sandfire Resources’ DeGrussa copper-gold mine in Western Australia. Orion said: “This facility has since attracted international attention as the largest off-grid integrated solar and battery storage facility in the world. With close to three years of operational data and 100% uptime, this successful project has established juwi as leaders in hybrid power supply solutions for mines.”

The investigations into renewable energy solutions at Orion’s Prieska project will complement the ongoing bankable feasibility study, with the additional benefit of potentially improving the base case plan of obtaining national grid power directly from the Cuprum sub-station already established on site, Orion said.

“Developing the renewable energy potential of the region is also a strategic goal of local government, as communicated in its Integrated Development Plans,” Orion said.

The Prieska copper mine operated from 1971 to 1991, employing approximately 4,000 people. The mine milled 46.8 Mt, producing more than 430,000 t of copper and more than 1 Mt of zinc in concentrate. Post May 1987, no more than 2 Mt of ore was blasted, with milling of surface stockpiles carried out from 1989. In 1991, the mine was closed and the site rehabilitated. It now has a defined maiden resource under the Orion ownership of 1.1 Mt of contained zinc grading 3.8% Zn and 365,000 t of contained copper grading an average 1.2% Cu. The deposit is regarded as one of the world’s 30 largest VMS orebodies, according to Orion.