AC/DC's Young brothers - guitarists Angus and Malcolm - wrote this song. They would often tell a story about how the song came about when Angus was flying in a plane that was struck by lightning and nearly crashed, but in the 2003 re-release of The Razor's Edge
, Angus explained in the liner notes: "It started off from a little trick that I had on guitar. I played it to Mal and he said, 'Oh I've got a good rhythm idea that will sit well in the back.' We built the song up from that. We fiddled about with it for a few months before everything fell into place.
Lyrically, it was really just a case of finding a good title, something along the lines of 'Powerage' or 'Highway To Hell
.' We came up with this thunder thing and it seemed to have a good ring to it. AC/DC = Power. That's the basic idea."