Benjamin, power does imply "rate" of energy. And in this case it is power. The energy's already present, and needs to be "transfered, used, or transformed."
By decoupling - through various points - and allowing the energy to discharge, it's transfered.
And it's important to differentiate between "energy" and "power."
In physics, power is the rate at which energy is transferred, used, or transformed.
Pressure is force per unit area applied in a direction perpendicular to the surface of an object.
It's not pressure. Pressure is "applied" over an area...
Power is directed, transformed energy. It's the decoupling via the cones - that creates the "drain" that allows the energy to transform and become directed power.
Actually, you helped me clean that part up. Thanks...