Modified consumer behaviour and the implementation of energy-efficient solutions can reduce electricity demand, while also enabling South Africans to save money on their energy bill, says South African National Energy Development Institute (SANEDI) energy efficiency and corporate communications GM Barry Bredenkamp.
Considering the constrained energy supply, every individual must play his or her part in reducing electricity use and help reduce the pressure on the national electricity grid, he says.
“With many people still working from home, there are now many new individual offices to be warmed for comfort, rather than traditional shared offices which feature optimised central heating systems.
"We recommend the use of gas heaters where possible, and that heaters be turned off once the room has warmed. All-day use of electric heaters is discouraged, not only because of electricity consumption, but also because hot, dry air can lead to respiratory issues,” says Bredenkamp.
Another heating concern lies with geysers. The use of a geyser controller to reduce the heat of hot water is recommended and should be considered. Many geysers, especially older ones, get hotter than required. Reducing the temperature will help save energy on water heating, he says.
“Cooking can [also] be an energy-intensive activity, especially when the whole country is making dinner at the same time. It puts strain on our grid and might mean some people are left in the dark.
"Cooking on gas or over a fire is a one way to overcome this or, if that is not available, using a microwave, as they are more energy-efficient than even modern ovens,” Bredenkamp says.
Further, home appliances are convenient and newer models are increasingly energy efficient, but they should still be used wisely, he says.
South Africans must be sure to take care when using their kitchen appliances. For example, ensure you have a full load of dishes or clothes before turning on the dishwasher or washing machine.
Tumble dryer use should be avoided. In addition, fridges must be properly sealed and not set to be unnecessarily cold.
“These simple measures can help save energy through the remaining half of winter and beyond. Improving your daily habits and thinking carefully about what appliances you use, when and how can make a difference and help with demand-side management in South Africa,” states Bredenkamp.