Have been living completely off grid for the past 6 years. We live rurally. My background is in electronics/electrical systems, so I designed and built the system we use ourselves, and have done a bit of consulting for others looking to go off grid.
For what it's worth, living in town, with power at the gate, it doesn't make financial sense to go off grid. It was going to cost $30k to get power to our house, I put in a complete system, including a large battery bank, for that.
We designed and set up the house with off grid living in mind. We don't do without any of the normal comforts