City Power to exclude businesses and key customers from load-shedding
MMC Jack Sekwaila said the move, which will start gradually from early June 2023, will go a long way in saving much-needed jobs and ensuring businesses remain invested within the city.
The City of Johannesburg will exclude key customers, essential services and some businesses from load-shedding to protect livelihoods, attract investments and increase the economy within the city, where network configurations allow.
MMC Jack Sekwaila said the move, which will start gradually from early June 2023, will go a long way in saving much-needed jobs and ensuring businesses remain invested within the city.
“The city has the responsibility to attract investments, retain those already operating within Joburg, and secure jobs for our residents. This hasn’t been possible with the relentless load-shedding that has impacted the economic activity within the city, leading to some businesses closing down while others emigrated to other provinces where reliable electricity supply is guaranteed.
“Most small businesses were forced to close due to the impact of load-shedding while still recovering from Covid-19. These plans will go a long way in ensuring we keep the economic activity going on amid this gruelling load-shedding,” said Sekwaila.
Sekwaila went on to say that most large power users and key business customers are excluded from load-shedding through the load curtailment agreements with the companies.
“Other businesses, especially those in industrial areas will be gradually excluded – owing to the reconfiguration of the network and other processes including the rolling out of energy techniques.
“The new arrangement will see many other essential services added to the load-shedding exclusion. The city is already exempting most health and water services following the request by the government last year. We may not right away be able to exclude all at once because of the embedded nature of the network.
“The changes come as City Power works towards implementing a new load-shedding schedule. City Power technicians and engineers have been working hard for the past few months looking for ways to reduce the burden of load-shedding,” said Sekwaila.
City Power CEO Tshifularo Mashava added: “To achieve standardisation, City Power identified 16 blocks that can shed the required load per block.
It is important to mention that the substations serving the Reuven, Hursthill, Alexandra and Inner City areas are remotely controlled by the City Power Control Room during load-shedding. The substations in all other areas are still manually operated and measures are underway, with budgets committed to ensure that those substations in other areas operate remotely.
“The new schedule will ensure that our customers no longer endure many hours of load-shedding, with others shed for four hours in one go. This schedule will reduce the frequency of customers being shed and in addition, blocks will not get shed at the same time for the same stage in consecutive days. In simple terms, our customers will be on for longer than it is now, especially in lower stages,” Mashava said.
Mashava said they are finalising plans and consultations with Eskom to ensure a smooth transition and the full implementation of the new load-shedding schedule by early to mid-June, which will see City Power assume complete responsibility for operating all of its substations during load-shedding.
The design of the new load-shedding schedule achieves the following:
• Eliminates the four hours duration in all stages and maintains two hours (plus 30 minutes) up to stage eight.
• In a four or five-day stage one or two load-shedding, a customer may be shed only once per day.
• After a block is restored, there is a two hours reprieve before the next scheduled time.
• A block is scheduled in a zig-zag fashion alternating between lower and higher stages in 24 hours. This reduces the frequency in comparison to the current load-shedding schedule.
• The maximum duration the block can be switched off in 24 hours is 12 hours or six times in higher stages like stage eight.
• Given that it is 16 blocks, two hours per time slot in 24 hours and 31 days, the algorithm is designed like a square to ensure fairness to all blocks. This explains a 50% chance of enjoying less frequent and 50% of the worst case depending on the day.
“It is for this reason that we needed to exempt the industrial loads to avoid the worst-case scenarios. We will gradually start excluding some businesses, and essential services from load-shedding, and City Power will start with network reconfiguration in the coming months,” said Mashava.
