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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.

New HVAC and water heating range for Africa (Image source: Rheem)

Construction

Rheem Middle East, a manufacturer of HVACR and water heating products, has launched the Odin Plus Hybrid Heat Pump Water Heater and Century Comfort Ducted Inverter Series into the Africa market
 
It signals a strategic push to address rising demand for energy-efficient cooling and water heating across the continent’s construction and real estate sector.
 
The Century Comfort Ducted Inverter Series is an advanced range built to combine effective cooling, intelligent control, and year-round efficiency.
 
Designed specifically for hot climates, it provides uninterrupted cooling during extreme weather conditions, and functions efficiently under higher ambient or low ambient temperatures.
 
Odin Plus Hybrid Heat Pump Water Heater utilises warmth from surrounding ambient air to heat water, allowing property developers and homeowners to reduce energy usage.
 
The product has a rated power consumption of 430 watts, meaning the unit only uses a small amount of electricity while delivering much higher heating output.
 
It is also PV ready and fully compatible with solar energy systems for additional cost savings.
 
“When it comes to water heating, striking the balance between efficiency and performance is crucial,” said Samer Bachour, general manager Rheem Middle East and Africa.
 
“Our new Odin Plus delivers reliable, energy efficient hot water without compromising on performance. Rheem’s connected technologies are designed to meet the region’s evolving needs, and this new product does just that.”
 
Bachour said that the new product range may also help with Africa’s sustainability objectives.
 
“As our team works toward achieving our new sustainability goals for 2035 — which includes reducing greenhouse gas emissions intensity by 30% across the entire lifecycle of Rheem products — we are leading the industry by developing environmentally conscious solutions with a sustainability-first approach,” he added.
 
“Our next generation of sustainability goals provides a north star, helping us focus on innovative products with higher efficiency and manufacturing them in a process that reduces our direct use of resources.”
 
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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.”

Çelebi Aviation commits to Kenya’s air services market

Logistics

Cargo and logistics group Çelebi Aviation has announced its entry into the Kenyan market
 
The company said in a statement that it marked a milestone in its expansion across Africa, reinforcing its focus on regions with high-growth potential.
 
Çelebi Aviation’s global footprint also spans Europe and Asia, although its entry into Kenya signals a reshuffling of its East African portfolio.
 
The move aligns with a “broader strategic recalibration,” the statement added.
 
“Following the conclusion of its concession agreement in Tanzania, Çelebi Aviation opted not to continue operations in the country under the existing structure after a comprehensive review,” it stated.
 
“This decision reflects a disciplined, value-driven approach to growth and a clear focus on markets that offer sustainable, long-term opportunities.”
 
The company added that its expansion into Kenya signals confidence in the region’s aviation potential and supports its ambition to deepen its presence across the continent.
 
“Çelebi Aviation continues to prioritise markets where it can leverage its global expertise to drive efficiency, service quality, and long-term value creation,” the statement noted.
 
Operations across all existing markets remain uninterrupted, it added, backed by a strong operational infrastructure and an experienced workforce.
 
Çelebi Aviation said its Kenyan arrival further strengthens its position as a trusted aviation services partner across both emerging and established markets.
 
“With more than 65 years of experience in ground handling and cargo services, the company continues to operate with a strong emphasis on transparency, ethical standards and full regulatory compliance,” the statement added.
 
“The company also maintains its commitment to contributing to local economies and employment in every geography it serves.”
 
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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.

Read more:

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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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