Framatome has a 51% shareholding in local South African company Lesedi Nuclear Services which performs upgrade and maintenance projects at Koeberg.

[1] Koeberg supplies power to the national grid so that over-capacity can be redistributed to the rest of the country on an as-needed basis.

The reactors at the Koeberg nuclear power station are built on an aseismic raft designed – on the basis of a mid-1970s hazard study - to withstand a magnitude 7 earthquake at a focal distance of about 10 km, 0.3g zero period ground acceleration (ZPGA).

[6][7][8] The reactor at Koeberg is cooled by cold water from the Atlantic Ocean pumped through an isolated circuit at 80 tons a second.

[9] Low and intermediate level waste from Koeberg is transported by road in steel and concrete containers to a rural disposal site at Vaalputs, 600 km away in the Kalahari Desert.

The administration enforces maximum housing density regulations in case of evacuation, which precludes the construction of high rise buildings.

On 11 November 2005, a fault on a transmission busbar caused the reactor to go into safe mode, cutting supply to most of the Western Cape for about two hours.

On the evening of 23 November, a routine inspection of the backup safety system revealed a below-spec concentration of an important chemical, resulting in a controlled shutdown of the reactor.

On 18 and 19 February 2007 large parts of the Western Cape again experienced blackouts due to a controlled shutdown of Koeberg.

[20] Koeberg 1's outage began on 10 December 2022 and it came back synchronised with the grid on 18 November 2023, taking much longer than the expected six months.

[22] Source:[23] After the Fukushima Daiichi nuclear disaster, seismic safety at Koeberg was reevaluated in conjunction with the IAEA.