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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[@powerwall]

Thank you for the information about solar.

[@gorangoran637]

Great job.

[@gavinocreencia7015]

Thank you for short explaination about solar..

[@simon359]

I would double or triple the refrigerator demand, as it’s always running four or five times an hour. Most people underestimate the demand. Also I would double the solar, unless you have the ability to move the panels as the sun moves along the sky & overcast and rainy days. Basically I double everything just in case.

[@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.