Power metal is a style of heavy metal combining characteristics of traditional metal with speed metal, often within symphonic context. Generally, power metal is characterized by a more uplifting sound, in contrast to the heaviness and dissonance prevalent in styles such as doom metal and death metal. The term refers to two different but related styles: the first pioneered and largely practiced in North America with a harder sound similar to speed metal, and a later more widespread and popular style based in Europe (especially Germany, Finland, Italy, Scandinavia), Argentina, Brazil, and Japan with a lighter, more melodic sound and frequent use of keyboards.

Power metal is today associated with fast tempo and melodic harmonies, the sound tempered by characteristics of speed metal, power metal's musical forerunner.

Power metal is highly focused on the vocalist, with "clean" vocals being much more prevalent than the growling vocals often associated with extreme metal. Inspired by Ronnie James Dio, Bruce Dickinson, Rob Halford, Geoff Tate and other heavy metal vocalists, power metal vocals are often in a high register. The majority of the genre's vocalists sing in the tenor range, capable of hitting very high notes. There are however many exceptions who sing in either baritone or bass range, or even make use of growls. Many power metal vocalists record multi-layered vocals reminiscent of Queen, creating a choral effect.