When you build a community off-grid, one of the biggest cost drivers is energy.

Energy is non-negotiable, it is THE core element of any country/city/group of people. If the settlement is in a normal populated location, then you can use solar panels with supplementary wood-gas based electric generation in winter.

If the settlement is in the arctic, the sun is absent for nearly half the year and if there are forests, they are slow growing. So realistically you have three options: Locate on top of a gas well, locate on top of volcanic geothermal, or develop nuclear energy.

Energy is something you can never have enough of.

If you're powering with solar and wood-gas, you want to dig a pool (with insulated liner and lid) for storing thermal energy. In the summer when your solar panels are over-producing, you'll be running air source heat pumps to push heat from the (warm) outside air into the pool water. The pool insulation will trap the heat until winter, when power is scarce. You then heat buildings and hot water using "ground source" heat pumps which, rather than cycling liquid through the ground, instead draw from the pool - therefore they are extremely efficient.

An olympic size swimming pool holds 2.5 million liters of water, water energy storage is 1.16 watt-hours per degree C, so ranging between 0C and 40C (104F) you can store 116,000 kWh of energy - the same as 11,000 liters (3,000 gallons) of heating oil.

You definitely don't want any gas stoves or appliances. You need electricity, so solve electricity 100% and then use only that.