HOW MANY SOLAR PANEL OF WHAT WATTAGE WILL I REQUIRE for my LOAD ?


I want to basically go green (partially for my house)

I figured out the following (Kindly correct me if I am wrong):

I calculated the KWhs in following way:

(Watts x nos x hours)/1000 = KWhs / day (Correct me if I am wrong)

LOAD CALCULATION:

Room 1 -
- 5W LED x 4 nos x 4 hours per day = 0.08 KWh / day
- 3W LED x 1 nos x 1 hours per day = 0.003 KWh / day

Room 2 -
- 5W LED x 2 nos x 4 hours per day = 0.04 KWh / day
- 15W FAN x 1 nos x 8 hours per day = 0.12 KWh / day

Room 3 -
- 5W LED x 2 nos x 4 hours per day = 0.04 KWh / day

Room 4 -
- 3W LED x 2 nos x 3 hours per day = 0.02 KWh / day

Total Consumption per day = 0.30 KWhs / Day

Now, I calculated the number of solar panel required in following way

On an average of 5 - 7 hours of full sunlight / day. On an average in this situation a solar panel will product approximately 0.007 KWhs.

Therefor I assume I will require 43 Watts of solar panel, by calculating :
0.30 (Required KWhs ) / 0.007 (KWhs / watt of solar panel) = 42.85 Watts (Approx 43 Watts)

AREA REQUIRED TO PLACE THE PANEL:

I got to know on an avearage 1 SqFt is required for 10Watts of panel.
Threrefore I shall require 4.5 SqFt area to mount it.

Kindly update me if my calculations are correct.

Thanks
DevNet