Power Theory was formed by guitarist Bob Ballinger in 2006 who envisioned an inspired blend of the iconic Heavy Metal sounds of the early 80's & NWOBHM fused with the aggressive stance forged by modern Power Metal. Ballinger's songwriting pulled directly from guitar heavy bands such as Judas Priest, Saxon, Accept & Iron Maiden while also retaining the melodic sensibilities the style is known for. The early days of Power Theory saw several lineup changes as trying to find musicians within the Philadelphia area who were of the same mind in their influences was an arduous process. Finally armed with a stable lineup in 2007 the band hit local venues ferociously, honing their early songs through numerous live performances before recording and releasing an EP independently in May, 2009 titled "Metal Forever".

Always pushing forward, 2010 saw Power Theory follow up this EP with the release of their debut full length album "Out Of The Ashes, Into The Fire". They hired notable producer Achim Koehler (Primal Fear, Sinner) for the mastering and on the strength of it landed a distribution deal with Pure Steel Records, Germany who released it internationally and through the Keep It True Festival in 2011. During this time more prestigious gigs were being offered with Power Theory opening for heavyweights like Accept, Kreator & Helstar, all of this topped by an invitation to play the 2012 Warriors Of Metal Open Air Festival in Ohio, USA. This festival was also used as the launch of their 2nd full length album "An Axe To Grind" again released internationally via Pure Steel Records.

As Power Theory continued fleshing out and defining its sound it became evident that a 2nd guitarist and vocalist with greater range would be required for the much stronger and diverse material Ballinger was crafting for the next album with greater emphasis placed on more serious and sometimes darker toned concepts. The band hit the road for 14 shows in 15 days directly supporting Vicious Rumors & Seven Witches in fall 2013, followed by a homecoming show opening for Raven, multiple Philly area shows and a second stage headlining appearance at the 2014 Ragnarokkr Festival in Chicago. Recording immediately began afterwards with Carlos Alvarez (Helion Prime, Judicator) brought on to engineer, produce & mix the album, Peter Baltes of Accept serving as executive producer and mastering by Brett Caldas-Lima (Ayreon, Devin Townsend) on what became the 3rd full length album "Driven By Fear", released internationally via Pure Steel Records in October 2015. Prior to the album's release Power Theory was invited to play Hard Summer Festival in Falkenfels, Germany and a show with FireForce in Belgium. Returning from Europe multiple live dates were played in 2016 to a steadily increasing following throughout Florida, Ohio, Michigan, NYC and of course Philadelphia. Power Theory was once again invited to perform at the Hard Summer Festival in Germany and also at the Rock On Fest in Budapest, Hungary, capping off yet another highly successful year filled with even greater achievements.