Buying prepaid electricity online in City of Johannesburg
- Powertime
- Mar 13
- 3 min read

Electricity is an essential part of daily life, and in the City of Johannesburg, most households use prepaid electricity supplied by City Power. Understanding how to buy electricity, how tariffs work, and what to expect can help residents manage their usage and avoid surprises.
What Is Prepaid Electricity?
Prepaid electricity allows residents to pay for electricity in advance and load units onto a prepaid meter. Instead of receiving a monthly bill, customers buy electricity tokens as needed and enter them into their meter.
City Power supplies electricity to most Johannesburg households using prepaid or post paid systems. With prepaid electricity, customers have greater control over their usage and spending because they only use what they have paid for.
How to Buy Prepaid Electricity in Johannesburg on Powertime
Buying prepaid electricity in Johannesburg is simple and convenient. Customers can purchase electricity through various channels on Powertime, like via the mobile app. SMS Vending and the website.
They can use different payment methods when purchasing.
· Instant EFT (No charge)
· Debit or Credit card (Note a 3.5% VAT inclusive fee applies for credit card transaction
costs)
· Powertime Wallet
(Make a payment into Powertime’s bank account, using your username as beneficiary reference and upload your proof of payment via the website OR email it to support@powertime.co.za
Once payment is made, customers receive a 20-digit token, which is entered into the prepaid meter to load electricity units.
Always buy electricity from authorised vendors, as scammers sometimes offer fake or cloned electricity tokens.
Understanding Electricity Tariffs in Johannesburg
The City of Johannesburg uses an inclining block tariff system. This means electricity costs increase as more units are consumed in a month.
Energy charges (per kWh)
(Excluding VAT unless stated otherwise)
Consumption block | Tariff |
0–350 kWh | R2.6645 per kWh |
351–500 kWh | R3.0564 per kWh |
Above 500 kWh | R3.4826 per kWh |
These rates apply on an inclining block tariff, meaning the more electricity you use, the higher the price per unit.
Fixed monthly prepaid charges
Charge | Amount |
Service charge | R70 per month |
Network capacity charge | R130 per month |
Total fixed fee | R200 per month (R230 incl. VAT approx.) |
This fee is deducted when you purchase prepaid electricity and applies to most prepaid customers.
This structure encourages customers to use electricity efficiently and helps manage demand.
Your tariff resets at the start of each month, regardless of when you buy electricity.
Visit the full tariff schedule here: https://joburg.org.za/documents_/Documents/Consolidated_Tariffs_2025-26.pdf
Why You May Receive Fewer Units Than Expected
Sometimes customers notice they receive fewer electricity units than expected when purchasing electricity. This can happen because:
Monthly service charges are deducted first
Outstanding service fees may be recovered gradually
Higher tariff blocks result in more expensive electricity
City Power may deduct portions of each purchase to cover outstanding service charges until the balance is cleared.
Benefits of Prepaid Electricity
Prepaid electricity offers several advantages:
No unexpected monthly bills
Full control over electricity spending
Easy purchasing through multiple channels
Better budgeting and energy management
It also allows customers to monitor usage and reduce consumption when necessary.
Tips for Managing Your Electricity Effectively
Here are some practical tips:
Buy electricity early in the month to stay in lower tariff blocks
Monitor your usage regularly
Avoid buying electricity from unauthorised sellers
Keep your meter number safe and accessible
Purchase electricity from trusted vendors only
Using electricity wisely can help reduce costs and improve efficiency.
Support for Low-Income Households
Qualifying residents can apply for the Expanded Social Package, which provides free electricity units and reduced service charges.
Residents can register at City Power offices or City of Johannesburg service centres.
Conclusion
Buying electricity in the City of Johannesburg is straightforward and convenient. Prepaid electricity provides flexibility, control, and easy access to power when needed. By understanding tariffs, service charges, and purchasing options, residents can better manage their electricity usage and avoid unexpected deductions.
Always buy electricity from authorised vendors and monitor your usage regularly to ensure uninterrupted power supply.
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