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South Africa advances grid-scale gravity energy storage

Energy

Energy Vault Holdings, Inc. has entered into a strategic development agreement with Eskom Holdings SOC Limited to introduce a large-scale gravity energy storage system in South Africa, marking a major step in the region’s transition toward cleaner and more resilient energy infrastructure

The first gravity energy storage system (GESS) project will be developed at Eskom’s Hendrina Power Station in Mpumalanga, among the country’s oldest operational coal-fired facilities. The installation is expected to deliver 25MW of power capacity with four hours of storage, representing 100MWh in total, while also offering future scalability of up to 4GW.

The agreement establishes a long-term collaboration between the two organisations aimed at accelerating the decarbonisation of Southern Africa’s electricity sector. Under the partnership, Energy Vault will supply its EVx 2.0 gravity storage technology alongside engineering expertise, project execution services and localised workforce training.

The companies also plan to jointly license and expand the deployment of up to 4GWh of gravity-based energy storage capacity throughout the 16-member Southern African Development Community (SADC) region by 2035.

Energy Vault’s EVx 2.0 platform introduces several upgrades compared to earlier versions of the technology, particularly in areas such as software coordination, mechanical performance, energy efficiency and automated construction processes. The updated design enables deployment at multi-gigawatt scale to support growing renewable energy penetration across electricity networks.

A notable feature of the technology is its ability to repurpose coal ash into large storage blocks weighing between 25 and 30 tonnes, creating an alternative use for combustion waste materials while supporting more sustainable infrastructure development.

“This landmark agreement with Eskom represents a transformational milestone for Energy Vault and for Africa’s energy future,” said Robert Piconi, chairman and CEO.

“By combining our breakthrough EVx 2.0 platform with Eskom’s extensive power generation, grid expertise and regional reach, we’re not only advancing long-duration storage at unprecedented scale but also pioneering a new model for sustainable industrial development. This partnership will create local jobs, establish resilient supply chains, and demonstrate how gravity energy storage can accelerate Africa’s transition from coal dependency to energy independence and security — all while delivering reliable, affordable power to communities that need it most.”

The initiative aligns closely with Eskom’s Just Energy Transition Partnership (JETP), which seeks to reduce dependence on coal while maintaining energy reliability, encouraging economic participation and supporting employment opportunities.

"Eskom is committed to reducing the environmental impact of its electricity generation activities and will continuously drive projects to support South Africa’s local and global emission reduction targets and transition responsibly. Eskom’s strategy is designed to position us as a resilient and competitive energy leader in a liberalised energy market."

"We will drive a just and inclusive energy transition that includes intensifying the repowering and repurposing of coal power stations and exploring clean coal technologies and solutions using technology as a strategic enabler to improve efficiencies and lower the cost of electricity. This partnership with Energy Vault and its innovative gravity storage technology will play a pivotal role in achieving our Just Energy Transition goals,” said Dan Marokane, group CEO, Eskom Holdings.

Southern Africa’s energy sector continues to evolve as governments and utilities pursue wider access to reliable and sustainable electricity. Electricity access across the SADC region has increased to 56% of the population, compared to 36% a decade earlier, reflecting expanding infrastructure investment and regional cooperation efforts.

Although coal still accounts for more than 80% of South Africa’s electricity generation, countries across the region are increasingly investing in renewable energy and storage technologies to diversify supply, strengthen grid resilience and improve long-term energy security. Utility-scale storage solutions are expected to become increasingly important in supporting renewable integration while also contributing to industrial growth, job creation and community development initiatives.

INZAG has taken delivery of a new Liebherr LTM 1090-4.2 mobile crane. (Image source: Liebherr)

Construction

INZAG has strengthened its equipment lineup with the addition of a new Liebherr LTM 1090-4.2 mobile crane

This four-axle unit enhances the capabilities of the globally active construction firm, offering a dependable and adaptable solution for complex tasks, particularly those linked to a major infrastructure development in southern Angola. The acquisition also reflects INZAG’s strategy of maintaining greater uniformity across its crane fleet. With this latest delivery, the company now operates two units of the 90-tonne model.

“Unlike crane hire companies, our aim is not to have the largest possible fleet with many different crane types, but rather a reliable all-rounder that is versatile and capable of handling both small and large lifts,” commented Lorenz Weber, procurement director at INZAG.

Beyond lifting performance, the company placed strong emphasis on safety and operational efficiency when selecting the crane. The four-axle configuration ensures excellent mobility while supporting cost-effective operations. Its adjustable axle load system enables smooth transportation across international routes and allows for flexible use on both highways and project sites. Additionally, integrated features such as ECOdrive and ECOmode contribute to lower fuel usage and reduced noise levels, supporting both operator comfort and environmental considerations.

First deployment in Angola requires flexibility

The crane’s first assignment will be in Angola, where INZAG is preparing for a major road infrastructure project. “With this new addition to our fleet, we are preparing for the start of a 146-kilometre road construction project in Angola,” explained Leandro Fernandez, managing director at INZAG.

The development focuses on upgrading the EN 140/295 national road, connecting the municipalities of Caiundo and Savate. Due to the remote nature of the site in southern Angola, relying on local crane rental services is not feasible.

“For this project, we needed a multifunctional crane that can be mobilised quickly, is flexible on site and can also be replaced during the operation – should that become necessary,” reported Weber.

The crane’s strong lifting performance and extended working radius made it particularly suited to the project’s demands.

“We will be using the new Liebherr crane primarily during the mobilisation phase, including for setting up camps and facilities, as well as for unloading and logistics tasks. It will also support operations at bitumen and precast plants, as well as the installation of box culverts,” remarked Fernandez.

Long-standing partnership and quality focus

INZAG continues to prioritise premium equipment and stringent quality standards across its operations. Many of its projects are supported by export financing from the German Federal Government, where the integration of German-engineered technology is a key requirement. The choice of Liebherr aligns with an established partnership between the two organisations.

“In addition to the machine itself, customer service, spare parts availability and technical support play a decisive role for us – requirements that Liebherr fulfils,” summarised Fernandez.

INZAG Germany GmbH specialises in delivering large-scale infrastructure developments across sub-Saharan Africa. Employing around 500 people, the company undertakes projects spanning road construction, water systems, energy infrastructure and port development. “We are currently active in Angola, Ghana and Uganda, among other places, combining European engineering expertise with extensive project experience in challenging markets,” said Weber. The company also provides export and trade services, facilitating connections between European OEMs and clients across Africa.

This engineered Weba Chute Systems head chute ensures stable material presentation onto the conveyor, helping to reduce wear and improve long-term operational reliability. (Image source: Weba Chute Systems)

Mining

As mining operations push for higher throughput, longer equipment life, and tighter environmental control, the design of transfer points is emerging as a critical factor in overall materials handling efficiency

No longer viewed as a minor component, chute systems are now recognised for their direct influence on plant performance.

According to Dewald Tintinger, technical director at Weba Chute Systems, inadequately designed transfer points can significantly disrupt operations, affecting material flow, belt loading, dust levels, spillage, and the wear rate of downstream equipment.

“A transfer point should never be treated as a static piece of infrastructure,” commented Tintinger. “It is an engineered flow control solution that plays a direct role in throughput stability, maintenance intervals and overall plant reliability.”

He explains that in modern processing environments, transfer points are increasingly being treated as vital control nodes within the entire materials handling system. Poorly managed material movement between conveyors, crushers, screens, or stockpiles can quickly escalate into broader operational challenges.

“Inconsistent flow patterns can lead to uneven belt loading, mistracking, excessive dust and spillage, and accelerated wear on liners, idlers and conveyor belts,” he explained. “These issues inevitably translate into increased maintenance requirements and, in many cases, costly production interruptions.”

Tintinger highlights that successful chute design starts with a thorough assessment of the material itself and the operating conditions. Variables such as particle size distribution, moisture levels, bulk density, abrasiveness, and cohesiveness all influence how materials behave during transfer.

“There is no one-size-fits-all solution,” he said. “Every application must be engineered around the specific flow behaviour of the material as well as the plant’s throughput requirements and space constraints.”

A central design objective is to ensure accurate and stable loading onto the receiving conveyor. If the material trajectory or discharge speed is not properly controlled, it can lead to uneven distribution, causing belt damage, excessive wear on idlers, and reduced conveyor efficiency.

“Correct belt loading is fundamental to conveyor health,” remarked Tintinger. “By controlling the flow path and discharge velocity of the material, we can significantly reduce wear and improve the overall reliability of the conveying system.”

He further notes that well-engineered transfer points also contribute to environmental compliance and workplace safety. By managing dust and spillage at the source, operations can maintain cleaner sites, minimise hazards, and reduce environmental impact.

“Dust and spillage are not simply housekeeping issues; they are often symptoms of poor flow management,” he commented. “By engineering the transfer point correctly, these risks can be mitigated at source rather than managed downstream.”

As mining companies continue to focus on maximising uptime and operational efficiency, transfer point design is shifting from a reactive maintenance issue to a proactive engineering priority.

“Ultimately, every transfer point must support predictable, controlled and efficient material flow,” Tintinger concluded. “When this is achieved, the benefits are seen across the plant in reduced downtime, lower maintenance costs and improved throughput performance.”

Zambia's infrastructure vital for economic prosperity (Image source: Adobe Stock)

Logistics

As regional trade intensifies and supply chains come under increasing pressure, Stanbic Bank says the next phase of Africa’s corridor development will be defined not by infrastructure investment alone, but by how efficiently those systems convert movement into economic value

Reflecting on the recent Land‑Linked Zambia 2026, under the theme, ‘Beyond Borders: Shaping the Future of Africa’s Transport Corridors for Shared Prosperity’, Stanbic noted a decisive shift in the corridor conversation, from long‑term infrastructure ambition to the immediate economics of execution.

“What has changed is not the recognition of corridors as critical assets, but the urgency around how they perform,” said head business & commercial bank, Chanda Mwila. “The question is no longer what needs to be built, but how effectively existing systems translate activity into growth.”

As Zambia consolidates its position as a land‑linked trade hub, rising mining output, increased fuel flows and expanding regional trade are driving sustained volumes through key routes. According to Mwila, this is exposing a more complex reality: inefficiency within corridors is no longer a logistical inconvenience, but a direct economic constraint.

“Every delay, every point of friction, has a cost,” Mwila said. “It affects how quickly capital turns, how reliably businesses can operate, and ultimately how competitive entire value chains become.”

Corridor performance is increasingly shaping investment decisions, with predictability and reliability emerging as critical factors alongside physical capacity.

“Investors are not only assessing infrastructure availability, but they are also assessing system performance,” Mwila noted. “The ability to move goods consistently, manage timelines and reduce uncertainty is now central to how markets are evaluated.”

From a financial sector perspective, Stanbic emphasised that enabling trade at scale requires closer alignment between logistics systems and financial flows. While infrastructure enables movement, it is the efficiency of transactions that determines whether value is realised.

“Trade does not stall only at borders; it stalls in systems. Payment delays, constrained access to working capital and currency complexity all slow the movement of goods as much as physical bottlenecks do,” added Mwila.

As trade volumes increase, these inefficiencies compound, tying up liquidity and limiting the ability of businesses to respond to demand across markets.

“The velocity of trade is directly linked to the velocity of capital. Improving corridor performance is therefore as much a financial priority as it is an operational one.”

Stanbic reaffirmed its commitment to supporting Zambia’s trade and logistics ecosystem through solutions designed to improve capital flow, enhance transaction efficiency and enable more predictable cross‑border operations.

The recent conference highlighted a powerful, co-ordinated push to transform Zambia from a landlocked nation into a strategic land-linked hub for the African continent.

Minister of Transport and Logistics, Frank Tayali delivered the keynote address, emphasising the urgent need for Africa to prioritise internal trade.

“Africa must trade more with itself before it trades with the rest of the world,” stated Tayali. “We cannot continue to export raw materials across oceans while importing finished goods at higher cost.”

The Minister outlined infrastructure advancements aimed at restoring Zambia’s strategic advantage, including the revitalisation of TAZARA, the recapitalisation of Zambia Railways, and the ambitious Kafue-Lion’s Den railway project with Zimbabwe. The implementation of one-stop border posts at Kazungula, Chirundu, Nakonde, and Mwami is also reducing delays and improving trade efficiency.

However, Tayali stressed that infrastructure alone is insufficient. The future lies in evolving these routes into comprehensive economic corridors by establishing logistics hubs, dry ports, agro-processing zones and industrial parks to ensure local communities benefit directly from trade.

Stanbic Bank reaffirmed its commitment to enabling regional commerce by providing essential working capital to keep fleets and supply chains moving, and by facilitating the cross-border payments that underpin the African Continental Free Trade Area (AfCFTA).

Mwila added: “Prosperity beyond borders will not be achieved by infrastructure alone, or by any single institution. It will be achieved through co-ordinated action, informed decision-making, and a shared commitment to execution.”

The Land-Linked Zambia 2026 Conference concluded with a unified call to action for deeper regional partnerships, harmonised regulations, and joint investments. By choosing collaboration over competition, Zambia and its regional partners are laying the groundwork to reduce the cost of doing business and redefine Africa’s place in the global economy.

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AFC reaches financial close on the Poro Power Green Bond (Image source: Adobe Stock)

Finance

Africa Finance Corporation (AFC) has reached financial close and disbursed €43mn under the Poro Power Green Bond, to be used to fund construction of a 66 MW solar power plant in the northern Korhogo region in Cote d’Ivoire

Structured as a €65mn dual-currency facility in euros and CFA francs, it marks the first project finance green bond in Cote d’Ivoire and across the West African Economic and Monetary Union (WAEMU).

The solar power plant, developed by Poro Power, is expected to be operational in 2027 and will become the country’s largest solar plant.

The solar plant is expected to provide electricity to more than 100,000 households and avoid over 72,000 tons of CO2 emissions annually, contributing to greater energy access and the country’s target of increasing the share of renewables in the energy mix to 45% by 2030.

AFC acted as lead underwriter and co-arranger, helping to structure the innovative dual-currency green bond that creates what it called a ‘replicable model’ for mobilising African capital into bankable infrastructure.

It also called the transaction a milestone for Côte d’Ivoire’s capital markets and for African infrastructure more broadly.

Historically, long-term infrastructure financing in the country has depended heavily on international capital.

By contrast, the Poro Power Green Bond was African-led, structured, and fully funded by African institutions.

Samaila Zubairu, president and CEO of AFC, said the Poro Power Green Bond sets a new benchmark for sustainable infrastructure financing in Africa.

“This landmark transaction demonstrates the growing capacity of African institutions to mobilise domestic capital and expertise to deliver transformative infrastructure projects,” said said Zubairu.

“We are not only helping to close the infrastructure gap, but also creating scalable, homegrown financing models that can be replicated across the continent.”

The transaction builds on AFC’s track record in Côte d’Ivoire across the power and transport sectors.

In the energy sector, it includes the 44MW Singrobo-Ahouaty hydropower project, Côte d’Ivoire’s first private hydro independent power producer.

Its investments in the country also include the 1.5km Henri Konan Bédié Bridge, which has eased congestion by 30% since commissioning and improved mobility in Abidjan.

In 2024, AFC also supported the Ivorian government in awarding six road development contracts worth €691.6mn.

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Manroland Sheetfed machinery is well known in Africa (Image source: Manroland Sheetfed)

Manufacturing

A familiar name in the print sector across Africa and the Middle East, Manroland Sheetfed is set to close its historic Offenbach factory in Germany
 
In recent years, the German press builder, founded in 1871, received financial support from its parent company, Langley Holdings plc, allowing it to continue exporting its huge print machines to the world.
 
Last October, South Africa’s Government Printing Works ordered the cutting-edge ROLAND 710 Evolution from Manroland Sheetfed, which boasts a production capability of 16,000 sheets per hour, making it one of the most efficient presses in its class.
 
In November, Manroland Sheetfed announced the successful installation of the ROLAND 706 LV Evolution at Jamjoom Pharmaceuticals Co. in Saudi Arabia, underlining its broad footprint across the region.
 
While the print machinery group enjoyed great success across the region in decades past, its decline reflects a shrinking market for printing presses globally.
 
Business in China, its primary overseas market, has also suffered in recent years.
 
In a recent interview with the publication Printweek, the company's chairman, Tony Langley, said “And then the final coup de grâce was the 100% US tariffs that also had an effect on the rest of the industry – I would say that confidence in making capital investments is probably at an all-time low."
 
The closure of the Offenbach site could mean the loss of more than 600 jobs.
 
Manroland Sheetfed’s spares and service business has also been put up for sale.
 
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