Khi Solar One is Africa's first concentrated solar power plant. Situated outside of Upington in the Northern Cape, the 140-hectare plant will produce 50 megawatts of power by using 4 200 concave mirrors to reflect and concentratea large area of sunlight onto a small area on a 205 metre tower.
Seafood is popular on many menus, but over-fishing is costing the oceans dearly. Aquaculture is one answer, with fish farmed for consumption in protected environments. In South Africa, the industry is in its infancy, but companies are farming fish that are green-listed on the Southern African Sustainable Seafood Initiative.
Gas is flared at Robinson Deep, Johannesburg's biggest landfill, and at Marie Louise, another of its five sites. But generators will be installed this year at the former to turn the methane into power. When all its landfills are all online, it will produce enough power to supply 12 500 middle-income households.
Is the universe expanding? What is dark energy? What's the deal with gravity? And the biggest question of all; are we alone? The Square Kilometre Array, which will aim to answer these questions and more, is slowly taking shape in a remote corner of South Africa's starry-skied Karoo.