Question about the machine

Just watched episode 9, loved it and will throw my two cents once I'm done processing it (bruh it was so good 😭) anyways, I have a question about the machine, specifically the circus itself, now we know they are brain scans and that they exist inside the circus, my question is how does the machine that runs the circus get it's power from because there has to be something powering it, especially since Caine got access to their social media at the very end