How much does a geyser cost to run per month in South Africa?

A standard 2kW electric geyser running 2 hours per day costs approximately R336/month at R2.80/kWh (2 kW × 2 hrs × 30 days × R2.80 = R336). This is typically the largest single electricity cost in a SA home. Installing a solar geyser or timer can cut this by 60–80%.

How can I reduce my electricity bill in South Africa?

The top ways to reduce your bill: 1) Install a solar geyser or geyser timer (saves R200–R400/month); 2) Replace incandescent bulbs with LED (10W vs 60W); 3) Insulate your geyser; 4) Wash clothes in cold water; 5) Use a gas stove instead of electric; 6) Consider rooftop solar panels; 7) Shift heavy loads to Eskom off-peak hours (22:00–06:00) if on Homeflex tariff.

Electricity Bill Calculator South Africa 2026

Estimate your South African electricity bill for 2026. Select your municipality (Eskom, Cape Town, Johannesburg, eThekwini, Tshwane), add appliances or enter kWh directly, and see your monthly cost including service charges.

⚡ Quick Calculator Get a fast estimate

Municipality / Utility

Input Method

Appliance	Watts	Hrs/Day	Days/Mo	kWh
				120 kWh
				108 kWh
				18 kWh

Estimated Monthly Bill

R 905,55

Energy Charge (246 kWh)

R 688,80

Service / Network Charge

R 216,75

Effective Rate

R3,68/kWh

Annual Estimate

R 10 866,60

How to Use the Electricity Bill Calculator

Select your municipality or utility — Eskom, City of Cape Town, Johannesburg City Power, eThekwini (Durban), or Tshwane. Each has different tariffs and service charges.

Choose "By Appliances" to add specific appliances (geyser, stove, pool pump, etc.) and set hours used per day. Or switch to "Enter kWh Directly" if you know your monthly consumption from your bill or smart meter. The calculator shows your estimated monthly bill including fixed service charges.

Need more detail?

📊 Extended Calculator More options, charts, and scenario comparison

Monthly Usage & Cost by Appliance

Electric Heater240 kWh — R 739,77

4 hrs/day

Electric Stove210 kWh — R 647,30

1 hrs/day

Air Conditioner180 kWh — R 554,83

3 hrs/day

Pool Pump132 kWh — R 406,87

4 hrs/day

Electric Geyser120 kWh — R 369,89

2 hrs/day

Fridge108 kWh — R 332,90

24 hrs/day

Washing Machine30 kWh — R 92,47

0,5 hrs/day

TV & Electronics22,5 kWh — R 69,35

5 hrs/day

LED Lighting18 kWh — R 55,48

6 hrs/day

Kettle15 kWh — R 46,24

0,25 hrs/day

Total Monthly Bill (Eskom)

R 3 531,85

Total kWh

1 075,5 kWh

Energy Charge

R 3 315,10

Service Charge

R 216,75

Annual Estimate

R 42 382,14

Understanding Your South African Electricity Bill

A typical South African electricity bill has two main components: the energy charge (based on kWh consumed) and a fixed service/network charge (payable regardless of usage).

Typical SA Household Consumption

Household Size	Monthly kWh	Monthly Bill (Eskom est.)
1–2 people, flat/townhouse	100–200 kWh	R500–R780
3–4 people, medium home	300–500 kWh	R1,050–R1,650
4–6 people, large home	600–900 kWh	R2,000–R3,000
Pool pump, large home	800–1,200 kWh	R2,600–R4,000

Common Appliance Wattages

Appliance	Typical Wattage	Monthly kWh (2 hrs/day)
Electric geyser	2,000–3,000W	120–180 kWh
Electric stove (all 4 plates)	5,000–7,000W	300–420 kWh
Pool pump	750–1,100W	45–66 kWh (at 2hrs; usually 4–8hrs)
Air conditioner	1,000–2,500W	60–150 kWh
Kettle	2,000–2,200W	3–4 kWh (15 min/day)
Fridge	100–200W	72–144 kWh (runs 24/7)
LED bulb	8–15W	2–5 kWh

Need full precision?

🔬 Professional Calculator Complete parameters, sensitivity analysis, and detailed breakdown

Eskom Homeflex Time-of-Use Optimisation

Shift heavy loads (geyser, washing machine) to off-peak hours to save significantly.

Peak kWh (07–10h, 18–20h weekdays)

kWh

Standard kWh (10–18h, 20–22h weekdays)

kWh

Off-Peak kWh (22–06h & weekends)

kWh

Homeflex TOU Bill

R 957,75

Standard flat-rate bill

R 1 056,75

Monthly saving / extra cost

R 99,00 saved

Peak rate

R4.9/kWh

Off-peak rate

R1.15/kWh

Tip: Set your geyser timer to heat between 22:00–05:00. At off-peak rate vs peak, a 2kW geyser running 3 hrs saves R 675,00/month.

Frequently Asked Questions

Eskom Homepower average tariff is approximately R2.80/kWh in 2026. Municipal surcharges add 10–30% on top, so City of Cape Town charges around R3.12/kWh and Johannesburg around R2.95/kWh. The exact rate depends on your municipality and consumption block.

Eskom residential service charge is approximately R216.75/month (2026). This fixed charge covers metering, billing, and network maintenance. Municipal utilities typically charge R228–R285/month. The service charge is payable regardless of usage.

A standard 2kW electric geyser running 2 hours per day costs approximately R336/month at R2.80/kWh. This is typically the largest single electricity cost in a SA home. Installing a solar geyser or timer can cut this by 60–80%.

Eskom uses an Inclining Block Tariff (IBT) where higher usage is charged at higher rates: Block 1 (0–350 kWh) ~R2.28/kWh; Block 2 (351–600 kWh) ~R3.05/kWh; Block 3 (above 600 kWh) ~R3.69/kWh. Low-usage households pay less per unit than high-usage households.

Top ways to reduce your bill: Install a solar geyser or geyser timer (saves R200–R400/month); replace bulbs with LED; insulate your geyser; wash clothes in cold water; use a gas stove; consider rooftop solar; shift heavy loads to Eskom off-peak hours (22:00–06:00) if on Homeflex tariff.