If I were to ask you, what are the various sources of energy, you’d list them in a jiffy. What if I asked you the various sources of renewable energy? You’d still be quick but not as quick as your answers for the former. Was that simple?
How about, name a few rather absurd sources of energy? That will definitely make you scratch your head and shrug your shoulders. So, here is an infographic that gives you 5 weird energy sources.