shedding the load ..
Two years on, it seems “load shedding” -- or rolling power cuts -- have become a way of life in South Africa. Last year had more hours of load-shedding than the previous six years put together; 3,776 hours, or 10 1/3 hours average per day across the entire year. It also had more hours at ‘higher stages’ (ie. more severe power cuts) than any year since records began.
This year has started off badly too; partway into 20th January, Eskom (the national utility) have already recorded 467 hours, or 19 1/2 days of load shedding -- that is, continuous rolling power cuts day and night since New Year’s Day, with the majority at Stage 4 to 6; this means at least 8 to 12 hours per day without power for most areas. The southern summer season is typically the worst for electricity generation problems, but this year is shaping up for another record-breaker.
In a previous blog, I commented on some of the reasons for power cuts; graft, misappropriation of funds, municipalities with irrecoverable power-supply debts, neglected maintenance, poor-grade and wet coal causing breakdowns, and so on. The chickens of many years have really come home to roost, just as Eskom is trying to play catch-up on some of the regular maintenance work AND kickstart the move to serious investment in renewables.
Mind you, we have a different source of grief in Europe, with gas supplies drastically affected by Russia’s invasion of Ukraine and the West’s response. Since over 60% of the UK’s power has been gas-powered, we have been warned of the possibility of national rolling power cuts for the first time in decades, fulfilling the prediction many of us electrical engineers made over twenty-five years ago of “economic terrorism”.
In response, some of the suppliers have announced a programme of voluntary load-shedding; to credit users for switching off their appliances and so reducing their consumption below average on certain hours of certain days, usually notified about 12 hours in advance. One such “power save session” recently equated to switching off the entire city of Leicester for an hour; not bad for a slight inconvenience.













