Hello I don't know much about physics but I thought I would come here because the topic interests me and I would like more professional opinions on the matter as their seems to be a lot of disinformation out there. People claiming to have created free energy machines and the like, Which make use of tesla coils and stuff. What I was wondering is that is zero point energy impossible to harness, Is the ground state really unavailable to us? A detailed explanation as to why this is so would be nice. I am currently obsessed with the casimir experiment which I want to replicate for myself some day once I have learnt a sufficient amount of physics. Thank you for your time.