There is no single monthly electricity figure that describes every South African household. Build a budget from measured consumption over a defined period, then reconcile the main appliances with that total. Occupancy, hot water, heating, cooling and pumps can change the pattern substantially.
Start with consumption, not the rand receipt
A purchase receipt tells you units bought and any deductions. It does not by itself show electricity consumed that month. To reconcile a prepaid period, start with opening credit, add all loaded units and adjustments, then subtract closing credit. Account for free allocations and changes shown by the supplier.
For a simple illustration, opening credit of 40 kWh plus 300 kWh loaded less 25 kWh closing credit implies 315 kWh used, assuming no other adjustments. Do not treat the R amount paid as though every rand purchased energy at one constant rate.
List the major tasks separately
| Category | Preferred basis | Detailed guide |
|---|---|---|
| Hot water | Measured circuit kWh or element run time | Geyser |
| Cooling/heating | Representative measured kWh and conditions | Air conditioning / heating |
| Refrigeration | Measured daily or label-based annual energy | Fridge/freezer |
| Cooking and laundry | kWh per useful session or cycle | Cooking / laundry |
| Pumping | Electrical input and actual schedule | Pool pump |
| Lighting/electronics | Input and hours or measured energy | Calculator |
Do not count the same load twice. If a measured whole-kitchen figure includes refrigeration, adding a fridge estimate again inflates the budget. Keep the time basis consistent: yearly labels, per-cycle figures and daily measurements need conversion to the chosen month.
An example budget with stated assumptions
Suppose hot water is measured at 180 kWh/month, refrigeration at 36, cooking at 40, laundry at 30, and lights/electronics at 24. The total is 310 kWh. Adding the assumed heater routine from its guide adds 180 kWh, bringing the scenario to 490 kWh.
This is arithmetic for a hypothetical household, not a national average or a SIMcloud customer statistic. Replace each line with your own evidence. The calculator converts measured daily kWh or timed electrical input into the chosen period.
Investigate a difference systematically
- Confirm that the meter serves the property and that all receipts match its complete number.
- Choose matching opening and closing dates.
- Include every loaded token, free allocation and relevant adjustment.
- Check whether the appliance estimates overlap or use incompatible periods.
- Record occupancy, weather, outages and unusual tasks.
- Ask the supplier about unresolved meter or account discrepancies with the evidence attached privately.
Do not open equipment or infer tampering solely from an estimate. A positive balance, a loaded token and a connected supply are different questions. Use the meter guide and the token troubleshooting guide for those tasks.
Turn the budget into energy cost
Apply the actual account tariff, including cumulative blocks or time periods where relevant. Keep fixed service charges and debt recovery separate. If you qualify for support, use the FBE application and collection guide; this budget does not determine eligibility.
Measure again after one meaningful change. Repeating the same method over comparable periods is more informative than trying to reach a generic monthly target that may describe a very different home.
Household budget questions
Can I compare my house with a neighbour only by rands?
Tariffs, deductions, occupancy and billing periods can differ. Compare matched kWh and clearly identified conditions first.
Is a higher winter total proof of a meter problem?
No. Check actual loads and account evidence. An unresolved discrepancy belongs with the supplier, not an assumed diagnosis from a generic benchmark.
Method references: Eskom energy guidance and the source-linked tariff reference. Reviewed 1 November 2026.