**Categories:** News, Gas, Energy **Tags:** South Africa, battery storage, natural gas, electricity grid, IRP 2025 **Excerpt:** South Africa’s government wants to launch an initial procurement process for 4,600 MW of battery storage and 5,000 MW of gas-fired power generation. Balancing flexibility, fuel costs and renewable energy integration will be decisive. **Slug:** afrique-du-sud-stockage-batteries-gaz-9-6-gw-electricite **Image alt:** Grid battery installation and gas-fired power plant in South Africa.
South Africa plans to prioritize battery storage and gas-fired plants in the first phase of its new electricity planning. Electricity and Energy Minister Kgosientsho Ramokgopa announced proposed capacity of 4,600 megawatts of storage systems and 5,000 MW of gas-fired generation, totaling 9,600 MW. These volumes will have to be implemented through a regulatory determination and tenders.
This sequence addresses two distinct needs. Batteries can shift some available electricity to periods of greater strain and provide rapid grid services. Gas-fired plants can generate on demand when solar and wind are insufficient. The technologies are therefore not interchangeable: their value depends on location, availability, costs and how they will be dispatched.
4,600 MW to store and release electricity
Storage can reduce losses from renewable energy curtailment when the grid cannot absorb all available generation. A battery charges when supply exceeds demand or transmission capacity, then releases electricity when it is useful. It can also contribute to balancing and frequency stability.
The announced power capacity of 4,600 MW is not enough to determine the amount of energy available. It is also necessary to know how many hours batteries can discharge at maximum power, how many cycles they will perform and how they will be connected. A 4,600 MW system that can release its energy for one hour does not provide the same service as a system capable of operating for four hours or more.
Tenders will therefore need to specify electricity system requirements, connection locations and availability obligations. Contract design will also determine who bears battery degradation risks, replacement costs and changes in the price of charging electricity. Experience from South Africa’s first installations provides a starting point, but scaling up to several gigawatts will require an appropriate supply chain, skills and grid planning.
Gas as dispatchable capacity
The 5,000 MW of gas-fired generation aims to provide dispatchable capacity. A plant can adjust output according to demand and the availability of other generation sources. This flexibility is useful at peak times and when variable sources produce less. However, it depends on having gas in the right place, at the right time and at a cost compatible with electricity tariffs.
Plant development therefore cannot be separated from the supply question. The country will need to determine gas sources, import or transport infrastructure, terminals, pipelines and purchase contracts. Delivery costs, foreign exchange risks and price volatility influence electricity’s competitiveness. Capacity that is built but inadequately supplied could remain underused, while expensive fuel would affect consumers or public finances.
Plants will also need to be designed to complement renewables rather than displace them. Dispatch rules, appropriate start-up and ramping capabilities, and contracts that remunerate availability can encourage flexible operation. Care will nevertheless be needed to prevent gas purchase commitments from creating rigid consumption obligations over several decades.
Investment sequencing matters
Prioritizing these two categories of resources does not mean solar and wind are excluded from the national plan. Authorities indicated that renewable capacity and hybrid projects will be considered in a subsequent determination. The sequencing aims, among other things, to improve the integration of electricity already available and strengthen supply during periods of strain.
The order of tenders can influence the system’s structure for several years. Well-located storage can enable more solar and wind generation to be used. If transmission lines remain insufficient, some of that energy could still be lost. Grid modernization and expansion must therefore progress alongside generation and storage capacity.
The government will also need to compare each solution’s cost over its entire life. For batteries, this analysis includes investment, charging losses, degradation and replacements. For gas, it includes the plant, fuel, supply infrastructure, emissions and the cost of periods when the installation remains available without generating. Demand management options and regional electricity trade can also help balance the system.
Implementation to be tracked through concrete results
The first official determination under the 2025 Integrated Resource Plan will need to detail volumes, eligible technologies and procurement conditions. Investors will expect stable rules, credible tender schedules and visibility on contracts. Local businesses will need to understand local content requirements and opportunities to participate in construction, maintenance and operation.
Success will not be measured solely by megawatts awarded. Commissioning dates, actual unit availability, cost per kilowatt-hour, reduced curtailment and contributions to grid reliability will need to be monitored. Gas and batteries can expand the system’s flexibility, but their effectiveness depends on integration with grids, renewables and market rules.
The 9,600 MW announcement thus marks a planning direction, rather than capacity already available. Pretoria’s challenge is to turn this target into competitive contracts and operational installations, while avoiding supply costs or delayed infrastructure that reduce the expected value for households and industry.