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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

A mind shift needed in agriculture in Africa
2010-12-02

Prof. Frans Swanepoel (Centre for Sustainable Agriculture and Rural Development), Prof. Monty Jones, Prof. Driekie Hay (Vice-Rector: Teaching and Learning), Prof. Alice Pell (Cornell University, USA), and Prof. Izak Groenewald (Director of the Centre for Sustainable Agriculture and Rural Development) at the inaugural lecture of Prof. Jones as Professor Extraordinary. 
- Photo: Stephen Collett

Food stability is essential for stability in all countries around the world. Radical interventions, and not incremental changes, are necessary to end hunger and poverty in Africa, said Prof. Monty Jones, Professor Extraordinary in the Centre for Sustainable Agriculture and Rural Development at the University of the Free State (UFS), in his inaugural lecture.

Prof. Jones is Executive Director of the Forum for Agricultural Research in Africa (FARA) and Chairperson of the Global Forum on Agricultural Research (GFAR). In his lecture he focused on the contribution of agricultural research to development and food security in Sub- Saharan Africa.

He said Africa is not known for good politics to promote food production. Countries under invest in research, education, knowledge management, agriculture finance, etc. There is also uncertain and restricted access to land. He specially mentioned women’s access.

Sub- Sahara Africa moved from being a net exporter of food to a net importer of food (28%). “Government spending on agriculture and transport went down and stagnated. A mind shift is necessary. Africa has the resources. We must take advantage of the opportunities,” he said, and added: “Africa must create visionary and inspirational leaders and managers who can drive developmental issues.”

Prof. Jones emphasised that fact that nutritional security is just as important as food security. The number of hungry people has grown to more than a billion in 2009. Hunger is the most severe in the developing world, especially Africa. Added to this is Africa’s population growth that i s also higher than the rest of the world. It is estimated that the demand for food in Africa will double in the next 40 years.

“Research and development alone cannot win the war against hunger in Africa. Everyone has a role to play,” he said.
– Leatitia Pienaar.

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