In this tutorial, we are going to learn about Calculate Solar Power for Home Appliances.

Here we are taking example
of 300W solar system calculation:

Suppose that we have below
items in our home for daily uses then we will calculate the power accordingly.

2 Fan which have power of
80W for each then total power will be = 2×80 = 160W

2 Energy saver which have
power of 20W for each then total power will be = 2×25 = 50W

1 Led TV which have power of
50W for each then total power will be = 1×50 = 50W

1 Tube Light which have
power of 40W for each then total power will be = 1×40 = 40W

Now total power is = 2 Fan
180W +2 Energy Saver 50 W+ 1 Led TV 50W + 1 Tube Light = 300W

For Solar System we need
below items:

- UPS/ Inverter =?
- Battery = (?)
- Solar Plates =?

300W solar system
calculation: Load = 300W

UPS / Inverter = 500- 1000 W

Power = Voltage X Current

P = VXI

300 = 12XI

I = 300/12 = 25A

Battery Size in AH = W X H /
V

Total Load X back up time in
hours / Battery Voltage

For 8 Hours back up time

300 X 8 / 12 = 200 AH

For 4 hours back Time

300 X 4 / 12 = 100 AH

Battery Charging current =
1/10^{TH }of batter rating.

= 200/10 = 20A

Solar Plate current = Input
Current + Battery Current

Now Solar Plate = 25A + 20 A
= 45A

Total Solar Current = 45A

Now we will calculate the
solar plate power = V X I

Maximum Solar plate voltage
= 14V

Then Solar Plate Power = 45
X 14 = 630W

Solar Plates = 630/150 = 4.2

It means we need total 4
solar plates for this load.

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