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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

Expert in Africa Studies debunks African middle class myth
2016-05-10

Description: Prof Henning Melber Tags: Prof Henning Melber

From left: Prof Heidi Hudson, Director of the Centre for Africa Studies (CAS), Joe Besigye from the Institute of Reconciliation and Social Justice, and Prof Henning Melber, Extraordinary Professor at the CAS and guest lecturer for the day.
Photo: Valentino Ndaba

Until recently, think tanks from North America, the African Development Bank, United Nations Development Plan, and global economists have defined the African middle class based purely on monetary arithmetic. One of the claims made in the past is that anyone with a consumption power of $2 per day constitutes the middle class. Following this, if poverty is defined as monetary income below $1.5 a day, it means that it takes just half a dollar to reach the threshold considered as African middle class.

Prof Henning Melber highlighted the disparities in the notion of a growing African middle class in a guest lecture titled A critical anatomy of the African middle class(es), hosted by our Centre for Africa Studies (CAS) at the University of the Free State on 4 May 2016. He is an Extraordinary Professor at the Centre, as well as Senior Adviser and Director Emeritus of the Dag Hammarskjöld Foundation in Sweden.

Prof Melber argued that it is misleading to consider only income when identifying the middle class. In his opinion, such views were advanced by promoters of the global neo-liberal project. “My suspicion is that those who promote the middle class  discourse in that way, based on such a low threshold, were desperate to look for the success story that testifies to Africa rising.”

Another pitfall of such a middle-class analysis is its ahistorical contextualisation. This economically-reduced notion of the class is a sheer distortion. Prof Melber advised analysts to take cognisance of factors, such as consumption patterns, lifestyle, and political affiliation, amongst others.

In his second lecture for the day, Prof Melber dealt withthe topic of: Namibia since independence: the limits to Liberation, painting the historical backdrop against which the country’s current government is consolidating its political hegemony. He highlighted examples of the limited transformation that has been achieved since Namibia’s independence in 1990.

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