PWM or MPPT.

[Throbbinhood]

The spreadsheet is an indication only (like anything we say here, really). If the clouds are black for three weeks on end, you'll struggle with a 95L engle, lights everywhere, for more than a few days. It's a handy indication when making solar purchases etc, to give you a rough idea and it accounts for summer/winter length of days.

For me, I have a 250w panel plus 180ah on board. Plus the ability to hook up the aux on the car, or just run the car for a quick juice up if need be. We stayed for two weeks over summer, plenty of overcast days, running 50L fridge at 1c, led lights on from 7pm-11pm and some on low all night (have a bub so it's easier leaving them on to see him at night). Plus phone chargers and whatever else. Never had an issue with that. Didn't need to use the electric blankets, if I did I'd like another 250w panel to juice them up during the day (when I do snow trips for instance), but I'll see how the current 250w copes (theoretically the fridge will draw fewer amps as the ambient temp will be much the same as internal fridge temp anyway).