PV Gap

Walter Said:

how many panels of solar cells i need to produce enough electricity for running a house's devises and machines

We Answered:

There are a number of factors that are necessary to consider in order to answer your question. First of all, you have to know the total load of the electrical appliances in the household. In order to make sure the solar system can supply it, you need to see if the solar cells are capable of supporting the maximum load that will be drawn at one time, and also the regular load throughout the day. To get a ballpark figure of load, check your latest utility bill. Usually, they will give you your total kilowatt hours used per month. Divide by 30, and you'll know the average kilowatt hours used per day by your household. Keep in mind that a newly installed household solar system usually supplies 3-5 kilowatts per day on a sunny day. Is your average daily usage within that range? If not, you would need a larger household solar system, with more panels and capacity.

Since different models and brands of panels have different capacity, and different households have different usage patterns, it's impossible to say offhand how many panels are needed for an unspecified household. But if you start with the energy needed, and compare that to solar systems being offered in your area, you should be able to find the information you are looking for.