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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

Female-headed households more prone to economic strains due to rainfall variations
2016-02-02

Description: Martin Flatø Tags: Martin Flatø

Martin Flatø
Photo: University of Oslo press

Research shows that a total of 41 % of South African (SA) households are led by women, and these households are twice as likely to be poor compared to other households.

Martin Flatø spent three months at University of the Free State (UFS), researching how female-headed households in our country are affected by variations in rainfall, which cause crop failures with their implications for rural economies.

He is a PhD student from the University of Oslo in Norway who was part of the 2014/15 Southern African Young Scientists Summer Programme (SA-YSSP) that was hosted by the UFS last year.

Flatø formed part of a group of international scholars who conducted research on how families led by females are affected by climate change. The group focused on the implications of the weather on crop failures and rural economies. Gender and household structures were studied to determine ways in which they are affected by economic fluctuations.
 
The research group’s preliminary findings indicate that female-headed households are more vulnerable to rainfall variation than households where there are adult residents or workers of both genders.

In view of the current water shortage in the Free State, as well as scientists’ projections that our country will be among the regions hardest hit by climate change in terms of a surge in temperature, Flatø’s collaborative research has substantial relevance.|

Grooming first class scientists
The SA-YSSP is a joint initiative of South African National Research Foundation and the International Institute of Applied Systems Analysis (IIASA). Its main aim is tackling challenges faced by the world at large and South Africa in particular.

Out of 24 PhD students from 18 countries and various academic disciplines, Flatø emerged as one of only three scholars to be awarded the Systems Analysis Scholarships for his outstanding science at the end of the programme.

World class mentorship
Prof André Pelser and Dr Raya Muttarak were Flatø’s SA-YSSP supervisors. Prof Pelser, of the UFS Department of Sociology, is a leading academic on population processes, and how they relate to local environmental issues in South Africa. Dr Muttarak is a research scholar at IIASA in Austria.

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