How to Size Your Off Grid Solar System

This video is about designing an off grid solar system. I hope this information helps you on your venture to building your of grid solar system!
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[@gorangoran637]

Great job.

[@gavinocreencia7015]

Thank you for short explaination about solar..

[@BromideBride]

Quite clearly put. I would have added units to the calculation because that's just more relatable. I know what you mean but it wasn't obvious.
You can buy great quality inverters with 125V to 450V DC input from panels. Higher voltages and series connected panels are generally more efficient unless there's shading issues. I couldn't see the series fuses on the panels and that wasn't pointed out, but is important in parallel arrays.
Nice you included lead acid but choose lithium. There's no comparison. Lifepo4 are _always_ the better investment. I've lived with both and I would never again choose lead unless there was literally nothing else.
I would have made it *very* clear that there cannot be a grid supply at the fuse panel....... because........⚡ line men get upset at being fried.
I have more than two decades fully off grid experience at my current address and another living with batteries and generators as primary power so I'm coming at this with lots of experience and I've watched hundred of hours of video and listened to far too much misinformation.
This video is one of the most straightforward explanations I've watched.
Well done sir.

[@gorangoran637]

Can you please explain the numbers(not curent or voltage) with wich you devide. Are this some constants or something else?

[@sleemsolar]

The 1 in the first part of the formula, is the SOC of lithium Iron Phosphate battery which is static, the 1.05 is the % for 95% which must LFP batteries are efficient .But in order to use that in the formula, it needs to be a variable number , not a %, so dividing 100 by 1.05 gives you 95%. The same thing for inverters, must are 90% efficient, so the same thing apply, 100 divided by 90% equals 1.11 which represent 90%. The 3 represents 3 days of autonomy. Hope this helps.

[@gorangoran637]

Than you.