The unified power system network is one of the main features of rire world policy for serving the. electrical *tt. One example for such a system is the unitted it*u* lorauni* electrical power system network' *i1irt uit" to secure the supply of electrical, energy for the trvo countries. This unified nefwork has already been .rltritf*a and eiists in service, comecting both Egypt and Jordan since 1998. ln the near future other countries *irr u" connected to this network, starting from Morocco inth.*..t-SaudiArabiaintheeast'syriainthenorth dorm to Sudan in the south' This network' in frrrn' will be connecieC to the unified European nefu'ork though iurt.y in the north. A precise load fore.casting study is o...rtu,1' rtquired for this unified nefxork ihl, ,uort .on...n, with the Egyptian Jordanian unified nlt"o.t. rihich is the first staii of the Unified Arab World Po$er System Network' the studies of this work are carried out using orte of the econometric method technique:. rvhich is .utt"O " Multiple Regressi6n Curve ;i; ;;.' Using this technique, the peak- load'.generation energy and Jnergy sales are estillleted for the comlng years. For the cases of the study' actua-l data of the lnified F$\'er system, through the last.few years are used, then tlre output results are compared with the input data for resting the accuracy of the rechnique.'used' The study also collcentrates artd highlights o.n^the accuracy anti sensiririry of the applied rnodel used for this study' ii* p.op''s.i technique for the interconnected netrvorks can be applied to simple as well as practical and co;nplicaie,! power systenl networks'