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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

Carbon dioxide makes for more aromatic decaffeinated coffee
2017-10-27


 Description: Carbon dioxide makes for more aromatic decaffeinated coffee 1b Tags: Carbon dioxide makes for more aromatic decaffeinated coffee 1b 

The Inorganic Group in the Department of Chemistry
at the UFS is systematically researching the utilisation
of carbon dioxide. From the left, are, Dr Ebrahiem Botha,
Postdoctoral Fellow; Mahlomolo Khasemene, MSc student;
Prof André Roodt; Dr Marietjie Schutte-Smith, Senior Lecturer;
and Mokete Motente, MSc student.
Photo: Charl Devenish

Several industries in South Africa are currently producing hundreds of thousands of tons of carbon dioxide a year, which are released directly into the air. A typical family sedan doing around 10 000 km per year, is annually releasing more than one ton of carbon dioxide into the atmosphere.

The Inorganic Chemistry Research Group in the Department of Chemistry at the University of the Free State (UFS), in collaboration with the University of Zurich in Switzerland, has focused in recent years on using carbon dioxide – which is regarded as a harmful and global warming gas – in a meaningful way. 

According to Prof André Roodt, Head of Inorganic Chemistry at the UFS, the Department of Chemistry has for the past five decades been researching natural products that could be extracted from plants. These products are manufactured by plants through photosynthesis, in other words the utilisation of sunlight and carbon dioxide, nitrogen, and other nutrients from the soil.

Caffeine and chlorophyll 
“The Inorganic group is systematically researching the utilisation of carbon dioxide. Carbon dioxide is absorbed by plants through chlorophyll and used to make interesting and valuable compounds and sugars, which in turn could be used for the production of important new medicines,” says Prof Roodt.

Caffeine, a major energy enhancer, is also manufactured through photosynthesis in plants. It is commonly found in tea and coffee, but also (artificially added) in energy drinks. Because caffeine is a stimulant of the central nervous system and reduces fatigue and drowsiness, some people prefer decaffeinated coffee when enjoying this hot drink late at night. 

Removing caffeine from coffee could be expensive and time-consuming, but also environmentally unfriendly, because it involves the use of harmful and flammable liquids. Some of the Inorganic Group’s research focus areas include the use of carbon dioxide for the extraction of compounds, such as caffeine from plants. 

“Therefore, the research could lead to the availability of more decaffeinated coffee products. Although decaffeinated coffee is currently aromatic, we want to investigate further to ensure better quality flavours,” says Prof Roodt.

Another research aspect the team is focusing on is the use of carbon dioxide to extract chlorophyll from plants which have medicinal properties themselves. Chemical suppliers sell chlorophyll at R3 000 a gram. “In the process of investigating chlorophyll, our group discovered simpler techniques to comfortably extract larger quantities from green vegetables and other plants,” says Prof Roodt.

Medicines
In addition, the Inorganic Research Group is also looking to use carbon dioxide as a building block for more valuable compounds. Some of these compounds will be used in the Inorganic Group’s research focus on radiopharmaceutical products for the identification and possibly even the treatment of diseases such as certain cancers, tuberculosis, and malaria.

 

 

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