Root on A string
x688xx
E♭5 is the E♭ power chord. Its notes are E♭ and B♭. It is the same chord as D♯5. No third means no major or minor quality. Mute unused strings carefully.
x688xx
11-13-13-x-x-x
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every E♭ and B♭ on the first 12 frets. The filled dots are the root, E♭. Build your own shape from any nearby group.
Other E♭ chords
Other power chords