Differences

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--- opinion:solar:sizing.walkthrough [2022/05/27 15:05]
frater_secessus [daily power requirements]
+++ opinion:solar:sizing.walkthrough [2022/05/27 15:05]
frater_secessus [daily power requirements]
@@ Line 16: / Line 16: @@
 ===== daily power requirements =====
-This part is the least fun and the most important;  we must account for every watt we intend to "spend" off-grid.  Some people prefer pencil-and-paper, but doing the work on a spreadsheet (M$ Excel, freeware [[https://www.libreoffice.org/|LibreOffice]] Calc, or free-to-use [[drive.google.com/|Google Docs]]) can make the work easier and more organized.  You can also rapidly alter it to model new build ideas.
+This part is the least fun and the most important;  we must account for every watt we intend to "spend" off-grid.  Some people prefer pencil-and-paper, but doing the work on a spreadsheet (M$ Excel, freeware [[https://www.libreoffice.org/|LibreOffice]] Calc, or free-to-use [[https://drive.google.com/|Google Docs]]) can make the work easier and more organized.  You can also rapidly alter it to model new build ideas.
 The goal is to come up with a daily target in **watt-hours** (**Wh**).  There will be times we have to work in other units but Wh is the main thing.((Wh is independent of voltage))  **Watt-hours are calculated** by multiplying **the load's draw in watts** by **the hours it is expected to run**.    If we run a 4w device for 6 hours that is 24Wh (4W x 6h = 24Wh).

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