Do you want to install solar panel to supply electricity to few appliances in your home? Still not able to find required size of panel in square inches(square meters).
Let me explain in an easy manner with a simple calculation.
Assuming you want to supply electricity to appliances like computer, computer monitor and television for your home using free solar power.
You can see average watt-hours required by each appliance.
An example chart is provided below.

• Appliance -AC or DC Watts Hours-Used Per Day- Watt-hours Per Day
• Computer--75-3--225
• Computer Monitor--150--3--450
• Television--300--6--1800
• Total Watt Hours per day =2475

So, total power requirement at home is 2475 Watt-Hours per day using solar power.
Question is what is the required panel size to get 2475 Watt-Hours per day? We are assuming average available sunlight in US is 5 hours per day.
But generally it is more in sunny days.
Typically, The PV solar panel of 1 square inch generates 0.
070 Watts.
So for 5 hours, The panel of 1 square inch will generate 0.
0350 Watt Hours per day (0.
070 watts per square inch * 5 hours = 0.
350 watt hours per day).
To get 0.
350 watt hours per day, you need PV solar panel of 1 Square Inch.
Then to get 2475 Watt Hours per day, how many Square Inches of PV solar panel required? Answer= (2475 / 0.
350) * (1) = 7071 Square Inches If I convert 7071 square inches into square meters then it is 4.
56 square meters (1 square inches = 0.
00064516 square meters).
So, if you install 4.
56 square meters of PV solar panel at your home then you can use computer, computer monitor and television whole day free of cost as you do not need any electricity from power grid.
It is really amazing to generate your own electricity with 4.
56 square meters of panel.