Anyone help me to know what to consider when designing solar power for the home?

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I made this picture in passing and only when I got home noticed this wasn’t just a homeless person, but a high tech traveller.

Question by Aristotle: Anyone help me to know what to consider when designing solar power for the home?
Hello,
I know little on solar power for the home. I understand that it is possible to convert power to chemical form then use it as electricity. My question is, what elements are involved and how is the sizing being done?
I need the power design to power lights (say 10), TV and radio.

Feel free to answer in the comment section below