The phrase "absolute powerhouse" means that something or someone is extremely powerful or strong. It indicates a high level of capability and effectiveness in a particular area. Full definition
But as with any cliché, the term exists for a reason; there are certain fruits and vegetables that are absolute powerhouses when it comes to nutrient density and health benefits. (mindbodygreen.com)
Real Madrid, Barcelona and Bayern Munich are all absolute powerhouses, the three best teams in the game. (squawka.com)
I think our midfield is going to be built around Emre Can, who is becoming an absolute powerhouse for us. (anfieldindex.com)