Wiktor Wise
South Africa's electricity sector is a crucial part of the country's energy landscape. The state-owned enterprise Eskom, founded in 1923, is the largest producer of electricity in Africa and generates approximately 95% of the electricity used in South Africa. The company operates notable power stations, including the Kendal Power Station and Africa's only nuclear power plant, the Koeberg nuclear power station. However, Eskom has faced challenges due to aging infrastructure, financial woes, and a heavy reliance on coal, which accounts for 83% to 88% of the country's electricity production. South Africa has set ambitious goals for renewable energy, aiming to build 20 GW of renewable power generation capacity by 2030 and shift away from coal to meet emission reduction targets. The distribution of electricity in South Africa is impacted by the maintenance of older plants and the development of new renewable energy sources, with the goal of ensuring a stable power supply for the entire country.
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What You'll Learn
The role of Eskom
Eskom is a South African electricity public utility, established in 1923 as the Electricity Supply Commission (ESCOM). It is the only electricity utility in the country and has 16,789,974 subscribers in South Africa, comprising about one-third of the population. Eskom is a state-owned company and is wholly owned by the South African Government. It is the largest of South Africa's state-owned enterprises and the largest producer of electricity in Africa.
Eskom generates approximately 95% of the electricity used in South Africa and about 45% of the electricity used in Africa. It has a total nominal capacity of 44GW as of March 2019. The company is divided into Generation, Transmission, and Distribution divisions. Eskom's mandate is to lower the cost of doing business in South Africa, enable economic growth, and provide electricity in an efficient and sustainable manner. Its business model and value creation are based on the generation, transmission, distribution, purchase, and sale of electricity.
Eskom transforms inputs from the natural environment, such as coal, nuclear fuel, fuel oil, diesel, water, and wind, into electricity. This energy is then transmitted over Eskom's extensive distribution network of approximately 33,000 km, supplying over 86% of South Africa's electricity needs. Eskom also plays a significant developmental role in supporting the National Development Plan 2030 (NDP) by promoting job creation, economic and skills development, and other national initiatives.
Eskom has faced financial challenges, with a total debt burden of R419 billion (US$30.8 billion) as of 2019. The South African government announced plans to restructure Eskom into three separate entities responsible for generation, transmission, and distribution to address these issues. Despite these challenges, Eskom operates a successful Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) to increase renewable energy sources and reduce emissions.
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Coal-fired power plants
South Africa's electricity generation is currently dominated by coal, which accounts for more than 80% of the country's power production. This heavy reliance on coal-fired power plants has its roots in the country's vast coal reserves and historical legacy of coal mining. However, in recent years, there has been a
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Renewable energy sources
South Africa has implemented policies to accelerate the transition to renewable energy sources. The country has set ambitious targets for renewable power generation and is investing in wind, solar, hydropower, and other green energy sources.
The South African government has recognized the environmental and economic risks associated with its heavy reliance on coal-fired power. As a result, they have introduced initiatives such as the Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) to promote the development of renewable energy projects. This programme has been highly successful, and the country operates a competitive bidding process to procure renewable energy sources.
The National Energy Regulator of South Africa (NERSA) introduced the Renewable Energy Feed-In Tariff (REFIT) in 2009 to reduce carbon-based power generation. This initiative aimed to progressively move towards renewable energy sources, initially focusing on wind energy, hydropower, and concentrated solar power (CSP). The feed-in tariffs were later expanded to include biomass and solar photovoltaics (PV).
South Africa has vast potential for solar energy due to its geographic location, receiving more than twice as much sunshine as Germany. The country has implemented solar parks, such as in the Northern Cape region, and has seen a dramatic increase in privately owned solar PV installations. By 2030, solar power production in South Africa is expected to reach 8,400 MW.
Wind power is another key focus for South Africa's renewable energy strategy. The country has attracted investors to contribute to the growth of the wind industry, enabling communities to invest in wind farms and generate electricity, new jobs, and income.
Other renewable sources that South Africa is exploring include landfill gas, biogas, biomass, and small hydro projects.
Despite these advancements, affordability remains a key concern for South Africans, with economic considerations taking priority over other factors in energy policy preferences. The country's renewable energy goals aim to address this by lowering the cost of investment and making electricity more affordable for all.
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Transmission and distribution
South Africa's national power grid is under pressure due to unexpected breakdowns and scheduled maintenance at various generation plants, which has resulted in reduced generation capacity and compromised the stability of the grid. The grid is made up of three components: generation, transmission, and distribution.
The electricity generated by power plants is transmitted through high-voltage transmission lines that form the national power grid. This grid operates at a synchronised alternating current frequency of 50Hz, allowing electrical power to flow from generation plants and spread throughout the country. The transmission lines connect the generation plants to distribution lines, which are lower-voltage lines that distribute electricity to homes and businesses. South Africa has approximately 325,000 km of these distribution lines, ensuring electricity reaches its intended destinations.
However, Eskom has faced financial difficulties and operational challenges. The company's ageing fleet of coal-fired power stations has resulted in constant rolling blackouts as they struggle to meet the demand. The average plant age is 40 years, and breakdowns and maintenance have led to a significant loss in generation capacity. Eskom estimates that it will require 8,000 km of additional transmission infrastructure by 2030 to incorporate more renewable energy sources into its grid.
To address these issues, the South African government has implemented initiatives such as the Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) to increase electricity generation through private sector investment in renewable energy sources. The government has also announced a procurement package to accelerate the goals outlined in the Integrated Resource Plan, aiming to address electricity shortages by procuring additional power generation capacity from independent power producers.
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The future of the electricity sector
South Africa has one of the most carbon-intensive power sectors in the world, with coal responsible for 88% of electricity production in 2017. The country is the seventh-largest coal producer globally and the 14th largest emitter of greenhouse gases. South Africa also has the highest per capita greenhouse gas emissions in Africa.
The South African government has recognised the need to transition to renewable energy sources and reduce the country's carbon footprint. The Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) is a government initiative to increase electricity generation through private sector investment in solar, wind, small hydro, landfill gas, biomass, and biogas. Over 6,000 MW of generation capacity has been granted to bidders in the renewables program, with a focus on wind and solar energy.
In 2022, the President announced that the Independent Power Producer (IPP) Office would double the procurement of renewable power to 5,200 MW per annum and scrap the licensing cap threshold. The government also aims to build at least 20 GW of renewable power generation capacity by 2030 and generate 77,834 MW of electricity by 2030, with new capacity coming from renewable sources. South Africa is also planning to shift away from coal, decommissioning 34 GW of coal-fired power by 2050.
However, challenges remain. Eskom, the state-owned electricity utility, has faced financial difficulties and aging infrastructure. The government announced plans in 2019 to unbundle Eskom into three separate entities responsible for generation, transmission, and distribution, creating a more competitive market for electricity. The carbon tax, passed in 2019 and due to come into effect in 2022, may also impact the electricity sector, with a focus on reducing carbon emissions.
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Frequently asked questions
South Africa's electricity distribution is currently under pressure, with the country facing power cuts and constant rolling blackouts. The national power grid is comprised of three building blocks: generation, transmission, and distribution. The generation capacity of Eskom, the primary electricity provider, often dwindles due to breakdowns and maintenance issues.
The majority of South Africa's electricity is produced from coal, with coal-fired power plants accounting for 83-88% of production. However, South Africa is planning to shift away from coal and increase its renewable energy sources. In 2018, 6.6% of electricity was produced from renewables such as wind, hydropower, and solar power.
Eskom, a state-owned enterprise, generates approximately 95% of the electricity used in South Africa. It operates notable power stations, including the Kendal Power Station and the Koeberg nuclear power station, the only nuclear power plant in Africa. Eskom is divided into Generation, Transmission, and Distribution divisions.
One of the main challenges is the aging network infrastructure, which limits the country's ability to expand electricity access. Eskom has also faced financial difficulties and struggles to meet demand due to plant breakdowns and maintenance. South Africa aims to increase its renewable energy capacity and reduce emissions by decommissioning coal-fired power plants and investing in wind, solar, and hydropower sources.
