He has collaborated with numerous musicians including Terje Rypdal, Kenny Wheeler, Eirik Hegdal, Vigleik Storaas, Nils-Olav Johansen, Ole Morten Vågan, Eyolf Dale, and Ståle Storløkken, and released his debut solo album The Attic in 2011.

More recently, Powell has played and recorded with musicians and small groups such as Eyolf Dale, Espen Berg, Natacha Atlas, Solfrid Molland, Iro Haarla, og Bridges with Seamus Blake.

His first, The Attic, was released on the Inner Ear label in 2011, and was recorded by his trio with pianist Eyolf Dale and bassist Jo Skaansar, as well as guest musicians Jasper Van Hulten (drums), Tore Brunborg (saxophone) and Erik Johannessen (trombone).

The album "Circadian Rhythm and Blues" consists of two parts, one with the trio, and the other where Powell plays completely solo, recorded in Tøyen Church in collaboration with producer Øyvind Røsrud Gundersen.

In addition to his performance activities, Powell has been involved in teaching, and since 2015 has been a university lecturer at the Norwegian Academy of Music, where he has taught subjects including trumpet, arranging, ear training and ensemble playing.