As outlined in the previous Transition Talk column (see Engineering News July 12–18, page 51), while gas will become more important in South Africa’s future electricity system, its role should not be overstated. Even in the absence of other flexibility options – such as batteries, pumped-hydro schemes, demand shifting, biogas, or the more flexible use of the existing coal fleet – only a relatively modest amount of gas will be needed to balance a system in which the penetration of variable …

Source: Opinion: How should SA’s gas infrastructure be configured for a least-cost power system?