Eskom warns of 101 days of load shedding

There can be as many as 101 days of load shedding this winter, in the "extreme case", according to an Eskom official.Eskom on Tuesday provided an update on the state of the power system, this after load shedding escalated to Stage 4 in the morning due to failing generating units.In its assessments for the winter period, Eskom expects between 37 and 101 days of load shedding, said group head of transmission, Segomoco Scheppers. The 101 days is "far in the extreme" scenario, he added.Eskom has to contain unplanned breakdowns below 12 500 MW to avoid load shedding entirely.Planned maintenance has taken out over 5 000 MW of capacity. However, unplanned losses are in excess of 15 600 MW. Eskom chief executive André de Ruyter said this is "unacceptably high" and has led to the implementation of Stage 4 load shedding to manage demand and avoid a total blackout.The heavy rains over the Easter weekend were not in Eskom&#039;s favour. It contributed to wet coal which is difficult to handle. It tends to stick and causes blockages at units leading to load losses, he explained.Group head of generation Philip Dukashe echoed concerns that persistent rain affects the ability to manage coal. "We have plans to curb rain to manage the risks imposed by the rain, particularly on coal stockyards ... but if the rain is persistent for more than five days and even after that, it is not dry, and you continue to have some rain, it poses a major issue."DemandUnits impacted by rain had to be supported with fuel oil. Often power stations lose combustion due to the wet coal, and there are also problems with the flow of coal in the system.Dukashe also said that, over the weekend, demand was higher than forecasted. On Friday, demand was 700 MW higher than forecasted, and this increased to 1 687 MW on Saturday and 1 200 MW more on Sunday. These significant changes impacted Eskom&#039;s planning, he explained.Eskom had hoped to take some units out for planned maintenance, but had to run them to meet demand. "So, the units queuing up for maintenance to be done were not able to be taken off," he said." Eventually, some of those units took themselves off due to various reasons, such as tube leaks.Eskom has units in excess of 11 000 MW that are at risk of giving in or failing at any stage, Dukashe said. This is a concern for Eskom as it has not been able to reduce the risk.Dukashe assured Eskom plans to bring more generation capacity online this week."We are hoping to be in a better position by Thursday evening, based on the units that will be coming back over this week," he said. By Thursday evening or Friday, Eskom plans to reassess the situation and possibly lift load shedding. -Fin24

Eskom warns of 101 days of load shedding

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