Integrating renewable energy sources into smart grids – Part one

There is global momentum to diversify electricity generation sources for economic, environmental and security reasons. Distributed generation (DG) enables more companies to enter the electricity market stimulating competition, encourages the development of renewable energy (RE) and limits the impact of events such as cyber attacks. However, conventional electricity distribution networks are poorly matched to the […]

Impacts and health effects of air pollution by Eskom, Sasol Synfuels and Natref

. A new study report on the air quality and health effects of air pollution by Eskom, Sasol Synfuels and Natref in and around South Africa’s Highveld Priority Area (HPA) provides shocking evidence of the harmful effects caused by these organisations to the environment and to human health. The study report by Dr Gray is […]

Balancing in-house and outsourced overhead powerline technical expertise

Most overhead transmission line (OHTL) asset owners employ a mix of in-house and outsourced expertise for the project management, engineering (system analysis and facility design), construction and maintenance of their OHTL facilities. The use of solely one of or a mix of in-house and outsourced expertise is done in a myriad of ways and for […]

Pairing solar and storage challenges gas peakers

Gas peakers have been around even before the recent rise of renewables made them even more indispensible. How else could grid operators fill in the void created by the vanishing solar generation when the sun sets at the end of the day or when wind stops spinning the wind turbines’ blades? And with natural gas […]

Safe, robust, repeatable and reliable solar energy 

Using innovative technology, the latest fixed-string voltage innovation in photovoltaic (PV) solar systems introduces a significant advantage over commonly deployed traditional string inverters.  Before we look at the advantages offered, allow me to explain what is meant by a “fixed-string voltage”. By using a maximum power point tracking (MPPT) electronic device at each PV module, […]

Current-limiting MV fuses for indoor distribution networks

In today’s world of advanced electronically controlled protection devices, the use of fusegear in networks may seem archaic and out of place, but there is still a range of applications for this simple protection device, and fuses are used extensively in variety of applications in medium and high voltage industrial and distribution networks. Advanced  features […]