1955 Doc is completely shocked and dismayed when he discovers how much power it takes to run the flux capacitor that he invented years later. How much is it?

"1.21 gigawatts?! 1.21 gigawatts!", Doc famously exclaims when he finds out how much power he required the flux capacitor to use when he invented it. In real life, it would take one-and-a-half nuclear reactors, or 600 wind turbines to create this much power. Of course, in the film, they rely on 1 lightning strike.

Asked by Tom Cohen · Last updated 5 years ago · 10K views