An example of metaphor used in science journalism:
"Life's energy currency ATP using electricity from the grid for the first time
…
For the first time the gap between manmade electricity and the biochemical energy that powers life, adenosine triphosphate (ATP), has been directly bridged using a new to nature metabolic pathway. This discovery discards the need for complex membranes and the roughly 3000 reactions used by cells to generate ATP in nature and consists of just four enzymes."
Bradley van Paridon (2023) Life's energy currency ATP made using electricity from the grid for the first time, Chemistry World, Oct 2023 p.35
The title of this article seems to use 'energy currency' in a figurative sense. However, in the body of the article, it is suggested that ATP is a form of energy (which would be an alternative conception).
Read about the nature of alternative conceptions
Read about some examples of science misconceptions
Read about historical scientific conceptions