Is Iron Man's arc reactor possible in real life? Experts weigh in on the sci-fi movie's premise. Menu. Reel Science. The MCU’s First Smash Hit Gets One Thing Right About Nuclear Fusion.

Iron Man & Spider-Man’s MCU Relationship Was Great (But This Part of It Never Made Sense) ... Tony never features a major Arc Reactor in his Spider-Man designs.

Moreover, building an arc reactor is extremely expensive. Instead, Williams designed her suit to run on solar and wind energy, making it special and setting it apart from the Iron Man suit.