Posts tagged as electricity

Local suppliers to benefit from new nuclear power plants

  As negotiations over South Africa’s nuclear energy programme continue, the economic impact of supply chain localisation will be of significant interest to local service providers. In fact previous announcements have highlighted that as much as 70% of the new build programme will be handed to South Africa’s local suppliers. To identify opportunities for your company, […]

A different type of grid is needed to solve SA’s energy challenge

  South Africa would get a much better return on its energy investments if it planned a smarter and more flexible electricity grid. A better grid would also boost the contribution of wind and solar energy. Government’s response to power shortages and load-shedding has been a thrust towards more power generation from coal-fired power plants, […]

Making the most of solar thermal energy

  Concentrated solar power (CSP) generation uses solar radiation to generate electricity from solar thermal energy. This power generation is employed in regions of high solar insolation, especially in the Middle East and North Africa (MENA) region, the United States, western India, South Africa, and Australia. While many commercial CSP plants are operating at present […]

Utility embedded power generation from water and waste

  Existing infrastructure and service facilities of municipalities and municipal utilities hold a number of hidden energy sources which could be re-used to generate electricity in an embedded configuration for use by the municipality. This article focuses on two potential sources, waste and water. Distributed embedded generation (DEG) is usually taken to mean private generation […]

Safety and portability in circuit breaker testing

  A high voltage circuit breaker is the most important component of a HV substation as it has the crucial task of removing the fault, no matter what the fault current is. Even a nominal current could be difficult to open as 2000 A on a 380 kV line would equate to approximately 500 MW […]

Creating a storage enabled smart grid

  With the rise of coupled solar and storage systems, there are challenges which must be addressed, notably claims of grid instability resulting from solar generation. A careful examination of the current situation from different perspectives, and proposition of viable solutions is necessary. There are two main challenges today in the solar photovoltaic (PV) market: […]

Positive demand side management: balancing renewable energy sources

  Demand side management (DSM) is normally associated with encouraging or forcing a reduction in maximum demand to enable a constrained generation capacity to match demand. However, the introduction of variable renewable energy sources into many grids has resulted in times where generation capacity far exceeds demand for short periods, stressing the generation fleet as […]

First generating unit at Medupi goes live

  President Jacob Zuma opened Unit 6 of the Medupi Power Station recently. Unit 6 was first synchronised to the national grid on 2 March this year and has been producing electricity to the national grid intermittently whilst undergoing regular optimisation tests. Eskom’s acting chief executive, Brian Molefe, says the commercial operation of Unit 6 […]