Where do Anunnaki spirits get their energy if they make the rounds among many humans to direct the spirit meddlers but don’t stay in one place for very long?

They have the ability to accumulate energy more efficiently than the fallen spirits from the angelic cohort and they have more range as a consequence, so they are not so different than the humans lost souls. They are being supported by Creator and given life support, so they are not in danger of immediate or rapid extinction as is the case for the spirit meddlers who are completely disconnected from the higher realms and any life support from above. So they are simply in a different class, and for the time being, enjoy maintenance level support without difficulty. It is only that they cannot raise their vibration independently to ascend to the light and rejoin their fellows that they continue to struggle in the lower realms, but they are nonetheless functional enough to go about and to follow orders they are given. So they are used as agents to commandeer the spirit meddlers and direct them and to impulse humans with programming by dialoguing with the deep subconscious mind and to help pave the way to accept spirit intrusions through various means of coercion or subterfuge.