This paper presents a month of measurements on the feeders connecting a 63 MW wind farm in Zafarana Egypt, to the 22 kV busbars of the 22/220 kV/2X7S MVA Zafarana substation. Voltage variations and frequency harmonics are compared with the acceptable limits of the national grid within the Egyptian standard conditions and specification of the transmission systems. (C) 2003 Published by Elsevier Science Ltd.