It all depends on the power requirements of the tool shed. If all you have is a single 100W light with a pull switch your requirements are much lower than if you've mounted your sprinkler timers in the shed and these have to be plugged in somewhere, 24/7.
Size your panel(s) appropriately to the expected peak and normal, "nominal" demand. You'll lose about 30% of the power converting from AC to DC so if you can run the light/appliance off DC you're better off. If you're charging batteries you'll need a voltage regulator to prevent the batteries from being overcharged (and hence explode). If you want to tie into the grid instead there a special controller that you have to use to ensure the power generated is compatible with the local utility and rquires permits from the power company; that's outside the scope of a DIY project and you should consult a licensed contractor.
In the pilot episode "Shot from a Broken Bow", The Enterprise crew has to visit Rigel V to learn why a Klingon courier crashed on Earth. Some fan figured out that at the Ent's max speed of Warp 5 it would take 3-4 months to reach Rigel and asked the writers in a forum why they glossed over that timeframe, making it seem like "just a day or two".
Their answer was, "There's really a star called Rigel?"
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It all depends on the power requirements of the tool shed. If all you have is a single 100W light with a pull switch your requirements are much lower than if you've mounted your sprinkler timers in the shed and these have to be plugged in somewhere, 24/7.
Size your panel(s) appropriately to the expected peak and normal, "nominal" demand. You'll lose about 30% of the power converting from AC to DC so if you can run the light/appliance off DC you're better off. If you're charging batteries you'll need a voltage regulator to prevent the batteries from being overcharged (and hence explode). If you want to tie into the grid instead there a special controller that you have to use to ensure the power generated is compatible with the local utility and rquires permits from the power company; that's outside the scope of a DIY project and you should consult a licensed contractor.
In the pilot episode "Shot from a Broken Bow", The Enterprise crew has to visit Rigel V to learn why a Klingon courier crashed on Earth. Some fan figured out that at the Ent's max speed of Warp 5 it would take 3-4 months to reach Rigel and asked the writers in a forum why they glossed over that timeframe, making it seem like "just a day or two". Their answer was, "There's really a star called Rigel?"