Typical Monthly cost savings

Average Monthly electrical consumption of a household

1000 kW

Average Monthly consumption of the geyser

430 kW (45%)

Current cost per kW electricity usage

R1.77 (varies region to region)

Current cost of running a geyser on average

R500 per month

Electrical energy saved per month when converting to solar geyser

215 kW (50%)

* conservative value affected by various factors

Cost of installed water heater (Geyser)

R6 612 (on 100l unit)

(Varies from system to system)

 

 

Cost of corresponding size electrical geyser (including installation!)

R6 500

Extra cost of solar geyser

R6612 - R6 500 = R112

The monthly kW savings:

430 kW - 215 kW = 215 kW

Monthly Rand savings:

215kW * R1.77 = R380.00

 

 

Resultant payback period if you HAVE to replace your existing geyser

R112 / R380.00
= Less than 1 month!

 

Payback period if you are simply replacing your electrical geyser (ie. You didn't NEED to replace an existing geyser.)

R6612 / R380.00 = 17.4 months

 


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