Storage insures constant power loading for the bulk power system.
Besides this, the peak power loading of the target q pk is used to constrain the operational window of the core plasma.
British Dictionary definitions for power loading
a load or burden; weight
the addition of an inductance to electrical equipment, such as a transmission line or aerial, to improve its performance See loading coil
an addition to an insurance premium to cover expenses, provide a safer profit margin, etc
the ratio of the gross weight of an aircraft to its engine power (power loading), wing area (wing loading), or some other parameter, or of the gross weight of a helicopter to its rotor disc area (disc loading)
(psychol) the correlation of a factor, such as a personality trait, with a performance score derived from a psychological test
material, such as china clay or size, added to paper, textiles, or similar materials to produce a smooth surface, increase weight, etc
(Austral & NZ) a payment made in addition to a basic wage or salary to reward special skills, compensate for unfavourable conditions, etc