How is Frequency related to Kinetic Energy?
Don't mix two identical mechanics
The mean velocity of electrons in a wire it is very-very low (less than a mm/s) and it is analogous to current. Consequently the power (as kinetic energy) passing per second it depends of current.

On the other hand we can accelerate protons (not in a wire) to velocities up to 80% of light speed, and and in this case we can apply deBorglie equation.