How many panel of solar cell are needed to produce enough electricity to run all house machines and devises?
Question:
We need to know a lot more information to answer the first part of the question.
Where you are has a huge effect on the answer because that determines the insolation (the power density of the sun on the ground) and also the cloud cover you are likely to experience. Then you need to know what kind of electrical equipment you have, particularly do you use gas or electricity for heating and cooking. Finally you need to know the efficiency of the solar cells you want to use (a factor of 4 variation can exist between different types)
As for storing the power for night time use, batteries would be the simplest, and most common scheme.
See the sources for a couple of decent discussions
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