We have some friends who are, for the most part, off-grid. They live in a rural suburb north of us. Their house is completely solar-powered, and while they have a grid-tied system, most days, they have net zero - which is to say that they are using everything they are producing - nothing goes out to the grid; nothing comes in from the grid.
The one caveat is that they still use propane for cooking and heating ... and drying their laundry ;).
They gave us a tour of their amazing property a few weeks ago. It's a gorgeous set-up, and if I said that I wasn't a little envious I'd be lying.
That said, we're actually in the same place, when it comes to complete self-sufficiency, and that's the middle. They just started at the other end - the technology end.
Deus Ex Machina and I started on the food end, and in that area, we are mostly self-sufficient. Five out of seven dinners per week include food we have grown and/or preserved (by canning, not freezing), and at least one meal each week consists entirely (except for things like seasoning) of foods we've grown on our quarter acre. We even hosted a dinner party with thirty guests in which a quarter of the food was grown here, and over half was locally sourced (the dessert - S'Mores - was not local ... or homegrown ;).
Our friends are, now, working toward their food security.
And we are, now, in a position to begin working on the technology side of things. Our first purchase: the bicycle generator.
Although it's not (and never will be) grid-tied, reckon if I pedal long enough, I could get to net zero?