We wired the camp for 120 last year, we were then able to make drip coffee(1200w) vs LP boiled water & French press.I live offgrid so I look at my batteries slightly differently. Also because to get grid here would have cost me 75K and solar + battery was a no brainer. In one sense my ROI was instant (Not Paying Big Power Big Bux) but the costs versus what I would have had to pay out monthly is pretty darn close too and that's with my latest upgrade pile coming, it'll be back in that black within the year. Considering no power failures (happens a lot up here) or other issues that come with Grid, all good.
For the years before that the biggest load was 8a for the water pump charging batteries for small power tools.
The wife is excited to be able to use a hair drier next year lol. So it is baby steps.