Power Charges are a key mechanic in *Path of Exile 2*, allowing players to significantly boost the power of certain skills. While not essential for all builds, they are crucial for maximizing the potential of some, such as the Tempest Flurry Invoker build. Unlike Frenzy and Endurance Charges, Power Charges don't inherently provide benefits; their value lies in their consumption by specific abilities. This consumption triggers enhanced effects, making them a cornerstone of certain powerful builds.
Think of them as fuel for specific skills. Abilities like 
Falling Thunder consume Power Charges to unleash more potent attacks. While not a requirement for most skills, they are integral to optimizing certain builds and exploiting unique item or skill interactions.
