Living off the grid means to be self sustaining in all aspects. No gas heat, no oil heat, only wood stoves. No shopping with credit or debit cards. Eating only what you raise or kill. No public utilities like water or flush toilets.
Basically, if this is your choice - go live in some of those militia compounds in Idaho with the anti-governent kooks who look like refugees from Duck Dynasty or Cliven Bundy's ranch.