The Council for Scientific and Industrial Research (CSIR) has revealed that the strange structures, which caused widespread public interest when they were erected on its Pretoria campus in full view of the N4 highway, are part of an advanced solar energy system that is providing the institution with electricity and research benefits.
Now that the system is up and running, the CSIR is working with the SA National Energy Development Institute (SANEDI) to explore the most effective options to enable solar-powered electricity generation systems to supply electricity when the sun is not shining.