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21 May 2018 Photo Naledi Posholi
Could wave power be an answer to SAs electricity crisis
Attending a recent guest lecture, were from the left: Prof Marian Tredoux UFS Department of Geology, Prof Stoffel Fourie fromWalter Sisulu University, and Thoriso Lekoetje a third-year UFS Geology student.

South Africa has a 2800-km long coastline with high wave energy potential that can generate electricity. Presenting a lecture at the UFS Department of Geology, Prof Stoffel Fourie discussed wave power as a possible solution to the country’s electricity needs. Prof Fourie is a geophysicist and the chairperson of research and development in the faculty of engineering at Walter Sisulu University.

Power at any time
Wave power is a renewable and sustainable resource. “It can provide continuous base load power because wave energy systems do not suffer from ‘time of day’ issues as other renewable energy options. This means that it can generate power at any time of the day,” said Prof Fourie. 
Discussed also was the wave power advantages and disadvantages. 

Wave energy advantages
• Wave energy is a reliable renewable energy resource;

• Reduces dependency on fossil fuels;

• Wave energy is predictable and consistent;

• Generates little or no pollution to the environment compared to other energy resources; and

• Presents no barriers or difficulty to migrating fish and aquatic animals.

Wave energy disadvantages
• Wave energy conversion devices are location dependent, thus limiting possible sites where they can be implemented;

• Offshore wave energy devices can be a threat to shipping as they are too small to detect by radar; and

• High capital investment required for start-up costs, construction and maintenance.

“Looking at both advantages and disadvantages, there is no doubt that South Africa can use this method to harvest energy. With the right investment and political buy-in, wave power could provide a continuous supply of energy and contribute to all South Africa’s electricity needs,” Prof Fourie said.

News Archive

Land a fertile field for historians
2017-12-25


 Description: Dr Admire Mseba Tags: Dr Admire Mseba 

Dr Admire Mseba, historian and researcher in the International Studies Group (ISG).
Photo: Charl Devenish

The use of land and the economics of Southern Africa at present is a contentious subject at almost every level of society. A historian and researcher who revels in happenings in these two areas, is Dr Admire Mseba, a postdoctoral research fellow in the International Studies Group (ISG) at the UFS.

Dr Mseba grew up in the Mberengwa region in southern Zimbabwe, known for cattle farming and mineral mining. While at the University of Zimbabwe, he became interested in economic history and archaeology, and completed his PhD at the University of Iowa in the USA. During his time there, Dr Mseba also became passionate about environmental history.

A historian's ability to think and engage critically on diverse subjects drew Dr Mseba to his field. Currently, he is busy with three research projects. Firstly, he is working on a book on social relations, about access to land in Zimbabwe. He is also examining regional and national efforts to control migratory pests during the 20th century, in particular, the red locust. In collaboration with a colleague at the ISG, Dr Mseba is also researching monetary systems in central Africa, covering the present-day countries of Zimbabwe, Malawi, and Zambia.

Dr Mseba believes future research opportunities in the domains of economic and environmental history abound. For one, the land question has been very topical in Zimbabwe for more than a decade—as it is now in South Africa—and needs more scrutiny. Regarding agrarian pestilences, he indicates the recent phenomenon of armyworm invasion. “There are so many opportunities for historians to investigate. There are so many ways to think about these things and trying to put it in perspective.”

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