I've been living mostly off grid for the past 3.5 years in a bus I converted. Solar isn't expensive anymore, panels can be had for <$1/Wh. The cost of batteries

I've been living mostly off grid for the past 3.5 years in a bus I converted. Solar isn't expensive anymore, panels can be had for <$1/Wh. The cost of batteries is still significant but some of that can be mitigated by buying used packs for 1/4 the price. The key with being off grid is redundancy. One is none and two is one. For example, if there are storms that last a week you'll get almost no solar power. You need another way to get power, typically a fuel-based generator.