The one thing I'm struggling with the most is power. In an extended grid-down situation, fuel may be hard to come by so using a generator may not be an option. I've been looking at various solar options over the last couple of weeks. To generate the type of power needed, especially in a portable way, is really expensive. Once you get to the point of needing more than ~100W out of solar, the folding, back-pack types don't put out enough.
For example, Goal Zero's 100W backpack solar is over $550. This one on Amazon is $300 and says it works with Yeti power packs:
Grape Solar 100W backpack folder Amazon also has one that uses SunPower cells. It doesn't "roll up", it folds in half. But, unlike all the other fold-in-half ones, it only weighs 4.5lbs instead of 30.
Generic folding 100W solar panel I also came across these guys:
Unisolar 136W solar power "strip" that's really long, but rolls up and can be stuck down to stuff (or even a tarp).
The Bioenno folks have some reasonably priced solar panels and charge controllers, unfortunately they're all set up to recharge their LiFeO4 batteries and not SLA batteries. The LiFe batteries are much, much lighter than SLA batts but are crazy expensive. I currently have a 15Ah one, it's
this one but I could see where that might not be enough for an "extended" time off-grid.
It's a puzzlement.