Solar Panel Systems & Batteries

Simple formula for calculating back-up timing of a battery = Amps of battery x number of hours with sun-shine / Load = Back-up time in hours , For example : (200 Amps + 200 Amp = 400 Amps) x 10 hours / 540 Watts = around 7 Hours
Also note, Volt x Amps = Watts

Harvesting of Sun Energy
It is advisable to all Power companies and governments not to invest much in conventional power generation projects. The solar energy will be the largest power in the next decade.
It is blooming business. Due to high performance of solar panels, it is Gigawatt industry of the future. Wind and solar radiation are very common and are free for all. Fossil fuel producers & investors had postponed it but now it is not possible for them to further continue it. Due to new developments the solar panels that produce kilowatts can now produce megawatts and will soon produce Gigawatts. This new kind of technology is very much useful and effective in Pakistan due to longer duration and intense solar radiations.