The dashed-line portion of the droop curve of the 90MW GTG corresponds to output values below the DLN limit. This range is from 0MW to 54MW, 54MW being 60% of the rated output. The GTG is not to operate in this range in the DLN mode. The solid-line portion of the droop curve of the 90MW GTG is the permissible operating range and equals 36MW, this being the difference between Pmax (90MW) and the DLN limit of 54MW. The % loading x is based on the total power required P as shown below: