South Africas renewable energy boom has entered a new phase and a new bottleneck.
The 4th annual South African Renewable Energy Grid Survey SAREGS shows that the countrys main constraint is no longer grid connection capacity but insufficient load and system flexibility to absorb the growing wave of renewable projects.
The 2025 SAREGS results were presented on October 27 during a webinar hosted by the South African Photovoltaic Industry Association in partnership with the National Transmission Company South Africa NTCSA. The SAREGS is compiled annually by the NTCSA to inform Eskoms Transmission Development Plan and the Grid Capacity Connection Assessment dashboard, which maps available grid access. According to Ronald Marais , Senior Manager for Strategic Grid Planning at the NTCSA, the 2025 survey received 673 submissions up from 483 in 2024.