Here in France it is totally legal to produce your own electricity as you wish and consume it. You have regulations if you try to connect your installation to the grid but you can totally have different circuits.

Waste water is more problematic, with a strong push for new constructions to be connected to the waste management system when doable. Off the grid system here are allowed to but have to follow some regulations, basically to prevent flooding your neighbors with fecal matter when it rains.

Hard to tell. Definitely not where I live (Estonia) since local planning bureaucrats seem to have a fairly strict understanding of “how you are supposed to live”. What follows is an imaginary conversation with planning officials over years:

• “why do you ask for a building permit, you’ve got to get a road first”

• “we want you to pay for the road, paving it, running road lighting along it, etc, please invest several hundred thousand into getting that road”

• “so, to bypass our demands, you built an agricultural building, please don’t live there, at least not publicly”

• “you want to install solar panels, there’s a permit for that”

• “so, to bypass our demands, you installed movable solar panels and a solar fence, we are severely concerned about it and consider taking action, but won’t”

• “after years, out of sheer bordedom, we are intending to privatize your access way and attach pieces of it to other plots of land”

• “we can’t take public ownership of it, as that could obligate us to build a road there, and we don’t really understand why you wouldn’t want to force us to”

• “oh, you spoiled part of our plan by requesting a power grid connection to be built along that path of land, now we’re kind of stuck with it, but hey, let’s try to obstruct getting the grid connection built”

• “let’s have doubts about why a power grid connection is needed, as the buidling it might supply isn’t properly registered”

• “oh, you have written that you need a power grid connection for a vehicle charging point and those have really low planning requirements, damn convenient to you, in fact you might get the connection built indeed”

Any tropical rainforest country where even if the laws are on the books, it would take all of their resources to enforce them. In America, Colombia and Ecuador seem like top options. In Africa, Cameroon and Gabon. In Asia, Borneo (Malaysia/Indonesia) or Papua New Guinea.

what are you trying to achieve by living off the grid here? escape from fascist regime? or AI apocalypse?

if you have to care about regulation, you are not off grid.

i would say the answer is country with large off grid areas, where no one will bother you and you have something to hunt. northern canada? siberia?