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14 March 2023 | Story Prof Frikkie Maré | Photo Supplied
Prof Frikkie Mare
Prof Frikkie Maré is the Academic Departmental Head: Agricultural Economics, University of the Free State

Opinion article by Prof Frikkie Maré, Department of Agricultural Economics, University of the Free State.
President Cyril Ramaphosa recently announced a state of disaster due to the electricity crisis and the appointment of the new Minister of Electricity in the Presidency, Dr Kgosientsho Ramokgopa. Although there are many arguments for and against the state of disaster and the position of a Minister of Electricity, I think all South Africans agree that drastic measures must be taken to improve the current situation. However, I do not think the state of disaster, or the Minister of Electricity will bring any quick fixes to the table, and therefore we have to assume the crisis will remain in the short to medium term.

The Cause of the Crisis

As South Africans, our biggest crisis at this stage is load shedding. We are confronted with darkness daily, or even twice or thrice a day. Although the impact of load shedding varies according to the time of day it is implemented, it generally hinders us from doing our work, preparing food, and relaxing in front of the television after work. It directly impacts the quality of life of those who need electricity for oxygen machines for them to breathe. It causes damage to our electrical appliances, especially due to power surges when the electricity is turned back on. In short, load shedding is disrupting our lives. It is a nuisance we do not need, and the sooner it ends, the better.

Load shedding may be be a crisis for us as citizens, but it is Eskom’s solution to keep the national grid from collapsing. Thus, the real cause of the crisis is not load shedding but the inability of Eskom to supply enough electricity to meet the demand. The second big concern is the rising cost of electricity in South Africa. From 2007 to 2022, electricity prices increased by 653% in an attempt by Eskom to increase revenue to try and catch up with its heavy debt burden while simultaneously trying to maintain the current power stations and add some new generation capacity.

The problem

South Africa, up until load shedding started in 2007, was always praised as one of the countries in the world with the most stable electricity supply, and electricity was priced among the lowest in the world. Our economy thus developed around the national grid and is heavily reliant on it. Given the above, our food system faces three problems. First and most visible is load shedding that is causing interrupted national power supply and increasing production and processing costs as fuel generators and solar power must be relied on. Secondly, the cost of food production, processing, and distribution increases sharply as national electricity prices increase. Third, new investments in the food chain are discouraged as it is heavily reliant on electricity, which there is not enough of.

The impact

Over the last number of months, the media was full of the impact of load shedding on the food system in South Africa. Visually it ranged from photos and videos of withered irrigated crops which failed as there were not enough hours of electricity to supply water. There were pictures of chicken farms full of dead broilers that died when the heating and ventilation systems could not function during load shedding. Many articles also warned that load shedding would hurt food security in South Africa as it would not be possible to produce or process enough food.

These reported impacts of load shedding on food security caused quite a frenzy among consumers as people tend to run with what is announced in headlines without reading or understanding the context. Consumers immediately fear a situation where there will be insufficient food in South Africa as the headlines read that food security is under pressure.  

Yes, although all the photos, videos and articles in the news might be true and certainly do impact food security, we must also remember that food security is a combination of the availability and affordability of food.  

The impact of load shedding on food production depends on the type of production system. While load shedding has a minimal impact on extensive red meat production, it can be detrimental to intensive systems like poultry production, especially if electrical heating is used to regulate the temperature. It also negatively affects producers relying on irrigation to water their crops as the quality and quantity of the crop will be influenced.

The effect of load shedding can be severe on certain primary producers and even cause farming operations to close. Still, it will not necessarily result in a food shortage in the country as our primary agricultural sector is diverse. However, the price of certain commodities will increase due to a lower supply and higher production costs, negatively influencing food affordability.

The larger problem with load shedding can be found in terms of processing the food, especially fresh produce reliant on a sustained cold chain. For food safety and quality reasons, fresh produce must be kept at constant temperatures, and processors and distributors thus have no choice but to use expensive private electricity generation, further pushing up the cost of food.

Another problem is that, for example, the cold rooms of processors are connected to generators, as power failures might happen even when load shedding is not a problem. Still, the processing line cannot operate without grid-supplied electricity. Although there is thus enough food in the country on a commodity level, these commodities cannot be processed into final food products as fast as in the past. This bottle-neck effect further reduces the supply of food products and increases their price.

We often forget about the impact of load shedding on the consumers’ food choices. If you need electricity to prepare food, the availability of electricity at the time you need to prepare it will affect what you eat. The problem is that more affordable foods usually take longer to prepare, while the quick-to-prepare, ready-to-eat fast foods are expensive. The higher demand for these more expensive products due to load shedding puts further upward pressure on the price of food.

So where are the monsters?

The electricity crisis impacts all roleplayers in the food value chain, from primary producers to final consumers. Although load shedding is the most visible monster here, the fast-increasing price of electricity and the general electricity shortage that discourages future investment are also lurking in the dark and contributing to problems in the overall food system. In my opinion, the electricity crisis currently does not yet threaten food security in terms of availability. Still, it is creating a monster in terms of food prices (inflation) and thus making food less affordable.  

Although private solar power and fuel generators do assist in alleviating some of the influences of the electricity crises, it is not the solution. The problem with solar power, for users requiring large amounts of electricity, is that it is too expensive to install storage capacity (batteries) to use during the night. You also have a problem when it is overcast and rainy, so solar is a mere addition to supplement the national grid during the day. On the other hand, fuel generators can supply electricity 24 hours a day. Still, only the fuel cost to generate 1kW is double what Eskom charges, making it too expensive in the long run.

In my view, the only option to ensure the sustainability of the food value chain in future is to get the national electricity grid functional again. There are many short-term solutions, but none is currently sustainable enough to provide affordable energy needs. Although it will certainly take time to get Eskom fully functional again, I do not think we will run out of food in South Africa. However, we must tighten our belts to be able to afford food while the monsters lurk in the dark.


For more information contact Frikkie Maré at MareFA@ufs.ac.za

News Archive

UFS alumnus receives PhD in Statistics from the University of Oxford
2016-06-03

Description: DW Bester  Tags: DW Bester

In May of this year, DW Bester obtained
a DPhil in Statistics at the University of
Oxford.
Photo: Supplied

On 14 May this year, Dr DW Bester received a DPhil in Statistics from the University of Oxford. The entire ceremony, which was held in the Sheldonian Theatre in Oxford, was conducted in Latin, as has been the case for the past 800 years.

Dr Bester completed his undergraduate studies and his honours degree at the University of the Free State (UFS). “At first, I was only planning to study for a master’s degree, but was privileged to get an opportunity to do a PhD as well. I didn’t think twice!” he says.

Studies at the University of Oxford


Universities in England do not require a master’s degree for PhD studies. With the help of Prof Max Finkelstein from the UFS Department of Mathematical Statistics and Actuarial Science, Dr Bester registered for the DPhil programme in Statistics directly after his honours studies.

“The title of my thesis was: Joint survival models: A Bayesian investigation of longitudinal volatility. It dealt with a problem in the medical field to determine the cause of stroke risk: is it the absolute level of blood pressure, or the volatility thereof? The analysis of this question led to interesting models which needed advanced application techniques. I had to study these techniques and write programmes for their application.

Although Dr Bester is working currently as the technical head of a company that calculates insurance for power stations, satellites, rockets, and cyber risks, he would like to continue working with his Oxford supervisor in future to make the techniques they have developed more accessible for researchers outside of the field of statistics.
 
“Studying at Oxford requires hard work, perseverance, and a lot of luck. Luck plays a big role, since there are no guarantees that hard work will ensure you a spot in one of the top universities.

Regarding his studies at Oxford, Dr Bester thinks back on his exposure to the GNU/Linux operating system, and free software. “I have seen how valuable this is for analyses in practice. I also had the privilege of meeting the father of free software, Richard Stallman,” Dr Bester says.

2011 Rhodes Scholar

He was elected as Rhodes Scholar in 2011. According to Dr Bester, who has been interested in Mathematics since high school, the Rhodes scholarship was something of a fluke. He applied for the Rhodes scholarship on the recommendation of Prof Robert Schall of the Department of Mathematical Statistics and Actuarial Science.

Role of the UFS in his successes


In addition to the continued support from the team of passionate professors and lecturers at the UFS, the actuarial degree at the UFS is fraught with statistics. Emphasis is also placed on Bayesian statistics. This was crucial to his studies at Oxford. According to Dr Bester, this topic is emphasised strongly in the international statistics community.

Dr Bester regards the work done by two of his lecturers, Michael von Maltitz and Sean van der Merwe, among his highlights at the UFS. Since our first year, they have created an atmosphere of camaraderie among the students. “I think this contributed to the success of everybody. They also make an effort to present topics outside of the syllabus regularly,” says Bester.

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