Many homeowners wonder whether switching from a postpaid to a prepaid electricity meter truly delivers savings - or if it’s simply a marketing pitch. Our analysis shows that, for a typical freestanding property with an 80A supply in the City of Johannesburg, prepaid electricity can save you around R1,000 per month on average. Here’s how the numbers stack up for July 2025.
Understanding Postpaid vs. Prepaid Tariffs- Postpaid: You’re billed in arrears for every kilowatt-hour (kWh) consumed, plus fixed service and meter charges (totalling a whopping R1360.07 per month), and if you consume more than 500kW in a 31-day billing cycle, you also pay 6c/kWh for each kW over 500kW used.
- Prepaid: You purchase electricity units in advance at a slightly lower tariff, with no additional monthly account fees or interest on arrears. The only service charge is a service charge of R70 and a capacity charge of R130, on which no VAT is charged.
By paying upfront for your electricity, you avoid hidden fees and gain better control over consumption, and your wallet will thank you.
The Numbers for July 2025
Assuming 31 days in the billing period (1 July to 31 July 2025) and an 80 A supply, here’s what you’d pay under each system:
On average, homeowners save between R 880 and R 1 150 each month simply by preloading their meters.
Why the Big Savings?
Lower Service Charges
Postpaid accounts include monthly service and network charges - even if you consume very little electricity. Prepaid users pay a much smaller fee.
Better Consumption Awareness
When you see your remaining kWh balance dwindle in real time, you become more mindful of switching off appliances, reducing waste and lowering your bill further.
Beyond the Numbers: Convenience and Control
No Surprise Bills: Eliminate end-of-month sticker shock.
Further pros to switch to prepaidZero Debt Risk
Prevent illegal reconnection fees or hefty arrears interest.
Flexible Top-Ups
Load as little or as much as you like—ideal for budgeting.
Making the SwitchYou need to call the City of Johannesburg to make the switch, or visit a call centre. There are also consultants that assist clients with the switch.
Conclusion
For homeowners in the City of Johannesburg on an 80A supply, prepaid electricity isn’t just a trend—it’s a money-saving strategy. With potential monthly savings of around R1,000, plus greater control and no hidden fees, swapping to prepaid is a smart move for any household. Consider making the switch today and watch your electricity costs drop.