During ‘The Legend of Korra’ episode 3 entitled ‘The Revelation’, we saw Amon gather all the anti-benders in Republic City together in a large room where he demonstrated his Energy Bending ability
However the strange thing about this is that only the Avatar has the ability to Energy Bend.
One possibility that could become a reality is that Amon is not really Energy Bending. When Amon said that the sprites gave him the power to Energy Bend, I knew he was lying. When Avatar Aang learned to Energy Bend, he learned it through a Lion Turtle.
Avatar Aang never went to the spirit world to learn how to Energy Bend, therefore it doesn’t make sense for the spirits to have given Amon the power to Energy Bend. Spirits and Energy Bending don’t go hand-in-hand. But Energy bending and Lion Turtles do.
My theory is that Amon knows a special chi-blocking technique that takes away Bending for an extended period.
Only the Avatar can Energy Bend. And unless Amon is some sort of sub-Avatar (which is impossible), he must be faking his Energy Bending.