User Manual

PowerOptimal Elon® 100 User Manual
Version date: 2022/06/28
Page 12 of 24
Version number: 2.15
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4. What to expect in terms of performance
4.1 Hot water production
Heating water takes a LOT of energy. A household geyser can use up to 40% of a house’s electricity.
Heating a single 200 litre geyser from 15 °C to 60 °C will use over 10 kWh. This is about the same
amount of energy burnt by a person running a distance of over 100 km at 10 km/hr, or enough energy
to watch more than 120 hours of TV
2
.
The more solar panels you have on your roof, the faster the Elon® 100 system will heat your water.
Typically, the number of panels has been selected to heat water over most of the sunlight hours (from
morning to afternoon). This will be slower than heating water using grid electricity. So you can expect
a gradual temperature rise from morning to afternoon.
As one would expect, hot water production increases with increase in number of solar panels. Keep in
mind that these numbers are averages over the year. This means that you should expect a lower
number in winter and a higher number in summer.
2
46” OLED TV at 82W.