Load requirements for a new off-grid system
The new ~realistic~ system needs to power:
small refrigerator ~350 watts x 8hrs/day x 1.5 (efficiency loss due to hot environment) x 7 days/week
laptop 33 watts x 12hrs/day x 7 days/week
smartphone/hotspot 43 watts x 12hrs/day x 7 days/week
graphics display ~120 watts x 4hrs/day x 5 days/week
desktop ~500 watts x 4hrs/day x 5 days/week
[alternatively, and probably the better solution for redundancy: new laptop with sufficient graphics capability to drive display/Photoshop/Adobe Apps (--online not an option--) ~120 watts x 4hrs/day x 5 days/week; then, reserve desktop for backup/failsafe, so ~500 watts 2hrs/day 1 day/week]
printer 23 watts x 0.5hr/day x 1day/week
miscellaneous small tools used occasionally:
hand drill : 588 watts x 1hr/month (likely to increase);
rotary tool 36 watts x 1 charge/month (likely to increase);
dog clippers : (1) wired ~15 watts x 3hrs x 1 day/month, (2) cordless 8.85 watts x 2 (charges) x 1 day/month;
camera battery charger 5.04 watts (usage varies widely);
AA/AAA battery charger 10.5 watts (usage indeterminate);
weather radio .78 watts (emergency use only; can charge by solar or hand crank).
That's about it, I think.
I'm uncertain how to figure out the load values for the miscellaneous tool usage because there is so much variability in that category.