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FEATURED ARTICLE
- Local start-up strikes gold in Ghana and Mali: An interview with the MD
  by Roger Lilley, EE Publishers
  Ignite Energy, a local, two-year old, power generations solutions company, has been selected to set up a 40 MW hybrid solar, battery and heavy fuel oil plant at Resolute Mining’s Syama Gold Mine in Mali. This is in addition to a 20 MW grid-tied solar PV project that the company is involved in at a […]
LEAD EDITORIAL: more >>
- At last we have an updated IRP, but what is it really achievable?
  by Sue Rohrs, Rohrslaw
  When the IRP 2018 was published for comment in August 2018 a number of people (including me) breathed a collective sigh of relief that the hotly debated, dreaded and much anticipated large allocation of capacity to cripplingly expensive, and potentially politically tainted nuclear energy wasn’t there. Don’t get me wrong, there’s a time and a […]
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FRONT COVER STORY: more >>
- Resonant HVAC and partial discharge testing gains traction
  Information from CBi-electric: african cables
  CBi-electric: african cables recently conducted the first 400 kV AC cable resonant test in South Africa. The test required two cascaded test units to achieve the test voltage of 391 kV at Eskom’s Ingula pumped storage scheme in the Drakensberg. All high voltage cables and accessories are quality tested before leaving the factory. This includes […]
INDUSTRY NEWS: more >>
COMPANY & PRODUCT NEWS: more >>

VIEWS & OPINION: more >>
GENERATION: more >>
- Compressed air: The new stationary battery?
  by Dr HA van der Linde and W Leaper, Leaper Innovate Green Energies
  Lead acid stationary batteries have been in use since 1859 and despite several disadvantages, such as their low energy-volume-ratio their low cost still makes them a firm favourite for a number of applications for example as stationary batteries. In the meantime, new battery technologies have come and gone and although the latest favourite, namely the […]
- Case study: Grid parity analysis of a PV-BESS hybrid
  by D Kanetey-Essel and M Moghul, Juwi Renewable Energies
  A proprietary technical and economic model was used to determine the optimal sizing of a grid-connected PV-BESS (solar PV and battery energy storage system) combination for a mine under development and located in the Northern Cape. This article presents the analysis of grid parity dynamics based on the levelised cost of electricity (LCOE) concept to […]
- Eskom’s flagship battery energy storage systems (BESS) project
  by Prince Moyo, Eskom
  This article discusses the flagship 360 MW/1440 MWh battery energy storage systems (BESS) project that has been launched by Eskom. It looks at storage technologies and their evolution, with particular reference to BESS of LiIon, NaS and redox flow battery technologies. Energy storage programmes that are being rolled out in the world are outlined. The […]
TRANSMISSION & DISTRIBUTION: more>>
- Proactive transmission and distribution asset management
  by Bert Taube, Paul Leufkens, Jim Weik and Jesse Dill, DNV-GL
  Utilities work continuously to leverage their assets. They are challenged to grow earnings even when they do not have the corresponding revenue growth. For this there are no standards, only best practices. And everything is performed under the strict and severe supervision of a public commission while at the mercy of local circumstances and considerable […]
- DC nanogrid-based energy bank for off-grid rural communities
  by Martial Giraneza and Prof MTE Kahn, Energy Institute, Cape Peninsula University of Technology
  More than 1,4-billion people worldwide do not have access to electricity; and 600-million of them live in sub-Saharan Africa. The average electrification rate of the region is 31%, with disparities between urban and rural areas. Various solutions are being implemented and monitored for their efficiency. Among the solutions for increasing universal access to electricity are off […]
- Online transformer condition monitoring minimises revenue losses
  by Senja Leivo, Vaisala
  Nothing is more frustrating for a power producer than not being able to get their product to market. Curtailment and losses due to reduced demand or technology-enforced downtime both mean energy is wasted and revenue lost delivering an instant blow to the bottom line. In response to the problem of curtailment, the market has various […]
APPLICATION: more >>
- Microbial fuel cells: A new approach to waste-water treatment
  by Mike Rycroft, EE Publishers
  The use of wastewater for energy generation by biodigestion and generation of biogas is a well established process in use at numerous waste-water treatment plants. A new approach, based on microbial fuel cells, which offers a scalable alternative with much potential, is in the development stages. The technique also has an application to acid mine […]
- Measurements and uncertainty in testing laboratories
  by Erich Seeger, SABS
  Each day, literally hundreds of measurements are made in laboratories using several types of test methods or standards. This article explains why the South African Bureau of Standards (SABS) laboratories (including the National Electrical Test Facility (NETFA)) use a particular rounding-off procedure in their test results. This can have implications in determining whether a product passes […]
- Electrical current signature analysis for fault detection in large motors
  by Mike Rycroft, EE Publishers
  Large electric motors form the core of many industries. As machines are designed to tighter tolerances, there is a growing need, for the sake of reliability, to monitor their behaviour and performance. Electrical signature analysis is proving valuable on wide range of motors to detect both mechanical and electrical faults. Vibration analysis (VA) as means […]
SUSTAINABLE ENERGY: more >>
- Making single-phase solar inverters smaller, cheaper, safer
  by Thomas Hargé and David Jobling, LEM
  New technologies allow photovoltaic (PV) inverters to switch at ever higher frequencies and consequently they are becoming much smaller and lighter. International competition and the move away from subsidies for new installations mean that there is strong pressure on their cost. The current transducers used in PV inverters must follow these trends: they must have […]
- PV with battery storage makes economic sense
  by Doreen Kanetey-Essel, Juwi Renewable Energies
  Significant economic benefits can be achieved by switching to solar and battery hybrid power for heavy energy users connected to the South African grid. This was highlighted in an award-winning paper “Grid parity analysis of a PV-BESS hybrid case study” at EE Publishers’ recent SA Energy Storage conference which was held at Emperors Palace near Johannesburg. Using […]
- Rural microgrid project improves people’s lives
  by Roger Lilley, EE Publishers
  Communities which reside in rural areas far from existing electrical infrastructure constitute a significant portion of the 600-million people in sub-Saharan Africa who have no access to electricity. These communities are deprived of modern lifestyle improving technologies such as electric light, microwave cooking, radio and television, cellphones and internet access – things most people take […]

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