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How much energy would it take to power a lightsaber?

In honour of May 4th (or May-the-Force-Be-With-You day) we did some digging to find out what it would take in terms of Earth energy to power a lightsaber, or fire up the Death Star.

We found the following infographic at infographicjournal.com that points out that a lightsaber capable of melting steel (like when Qui-Gon Jinn cut into the thick blast doors of Nute Gunray’s bridge in Phantom Menace) would require 1.69 gigajoules of thermal energy. That’s equivalent to the power output of 120,380 AA batteries, 67 Tesla Powerwalls or 0.28 barrels of oil.

How Many Batteries Would it Take to Power a Lightsaber? Or the Death Star?

Courtesy of Infographic Journal