If you don't care to go into detail, that's fine, but your answer is vague. E.g. do you have a hidden, off-grid, underground lair?
if you are living mobile, you probably need gas or batteries for warmth or cooling. if your climate is currently comfortable, temperatures can be raised.
or maybe you are a nomad hunting and gathering your own food? the wilderness can be pillaged and sold and "secured" until there's nothing left to eat.
there is no perfect security.
No lairs necessary. You can read up on people who do FIRE.