South Africa’s renewable-energy transition is changing hands. BloombergNEF expects corporate buyers to drive about 73% of the 2.3 GW of new solar and wind capacity added in 2026, meaning private companies will support more utility-scale renewable projects than government auctions for the first time.
The shift reflects a different reason for buying clean power. For many businesses, renewable energy is about getting reliable electricity, controlling energy costs and securing supply. Through corporate power purchase agreements and wheeling, companies can increasingly contract directly for renewable electricity rather than depending entirely on Eskom and the traditional utility model.
That is changing the structure of South Africa’s power market. Government auctions helped establish the country’s renewable-energy industry, but private procurement is now becoming the bigger engine. BNEF expects corporate demand to remain the main driver of renewable additions through the rest of the decade, giving businesses a much larger role in determining where new generation gets built.
But there is a problem: the grid is becoming the bottleneck. Developers can build more solar and wind, and companies can sign more PPAs, but transmission capacity determines whether that electricity can actually reach customers. An aging coal fleet and rail and port constraints add to the pressure, particularly as South Africa tries to use cheap, reliable electricity to support mining, manufacturing and critical-mineral exports.
Private capital is increasingly willing to build the power, but the country now needs the grid, market reforms and competitive electricity prices to turn that investment into factories, mines, exports and jobs. The next phase may therefore depend less on how much renewable energy South Africa can attract and more on whether its infrastructure can keep up with it.
