Posts tagged as Solar

Sun to be dominant power source by 2050

  The International Energy Agency (IEA) predicts that the sun will be the dominant source of energy by 2050. In late September 2014, the agency released Technology roadmap: Solar PV energy, which among other things, speculates that the cost of energy generated from solar PVs will fall to around US$0,04/kWh in coming decades making the sun the […]

Wits students show they can work under pressure

  Final year students at the Witwatersrand School of Electrical and Information Engineering showed great ingenuity in the projects they presented at the annual open day on 15 October 2014. In introducing the event, school head Prof. Fambirai Takawira said that students were given only six weeks to develop, design and build their projects. “The […]

Assessing the effect of PV generation on distribution system voltages

  Utility distribution systems have seen a huge increase in distributed energy resources (DER) in recent years not only due to renewable portfolio standard requirements but also government financial support. Furthermore, it is becoming much more common for DER generation levels to significantly exceed the local load on the feeder to which it will be […]

Solar Challenge 2014 highlights

Here are the highlights from the Sasol Solar Challenge 2014 – a solar car endurance race from Pretoria to Cape Town, South Africa. Today is the penultimate day of the race, and it seems like it is going to be a nail biting race to the finishing line. [View the story “Sasol Solar Challenge 2014 […]

Sasol Solar Challenge kicks off at CSIR

  The Sasol Solar Challenge, a biennial solar car race taking place in South Africa, kicked off at 8h00 on 27 September 2014 at the Council for Scientific and Industrial Research (CSIR) in Pretoria. Competitors in the challenge harness sun power to race their solar-powered vehicles from Pretoria to Cape Town, via Port Elizabeth. Ten […]

Ilanga II: Under the hood of a sun chaser

  The engineering challenge of designing and building a solar-powered racing car for a strenuous eight-day international endurance race brings together research, theory and development while promoting alternative energy and technological innovation. The Ilanga II is a prototype solar racing car developed by the University of Johannesburg (UJ) Solar Team to compete in this year’s […]

Using smart storage to enhance rooftop solar performance

  Rooftop , or own generation, solar photovoltaic (PV) systems, are being installed by many commercial and industrial users, including mines, with the aim of reducing energy costs and increasing security of supply. What many users don’t realise is that the load profile results in unused energy which may be utilised to gain further advantages […]

Coal meets solar at hybrid energy workshop

  Two unlikely sectors in the electrical power generation sector, fossil fuel fired power generation and solar thermal systems, previously regarded as being diametrically opposed elements in the power field came together at the “Hybrid solar/fossil energy workshop” organised by the Fossil Fuel Foundation and SolarPaces on 20 and 21 August 2014 at the Glenhove […]

Solar flares return

  Although over the past few months solar activity has been very low, with at one stage no visible sunspots, we could still be in for some surprises. On 24 August 2014  the sun emitted a mid-level solar flare.  NASA’s Solar Dynamics Observatory captured images of the flare, which erupted on the left side of […]