The electrical power system consists of a large and complex structure which consists of power generation, transmission, distribution and utilization of the supply for customer end users. This power structure is generally expected to fulfill the customer demand with efficient and quality of supply. In practice the complexity of the system specially distribution network due to the reasons such as loading pattern, length of the line, the minute-to-minute change of customer‟s load and other factors, it is mainly faced in to voltage drop, voltage fluctuation and power losses. The goals of this thesis were to minimize power losses, enhance system voltage, and improve the overall efficiency of Debre Berhan distribution network found in north shewa zone, Amhara region and located 130 km in north direction of Adiss Ababa. It provides power to the consumers through nine different feeder lines. Among those feeder lines, Ankober feeder is more complex due to number of connected branches, nature of loads, feeder length and other factors and hence the system faces on poor voltage profile and have a significant power loss. The feeder has 91 km length and it consists of 82 buses and 6 laterals with an operating voltage of 15 kV. The total real and reactive power for base configuration model is 7422.07 kW and 5336.445 kVar respectively with a line loading of 250 A, and feeder capacity of 11 MVA. The load flow results for the base case configuration at normal (100%) loading condition shows that, the minimum voltage profile of the system was 0.8987 pu which is below IEEE standard value. The total pre-compensation active and reactive power losses were also 221.34kW and 140.125kvar respectively. To overcome the problem, a hybrid Fuzzy-Flower pollination optimization technique was applied for optimal location and size of distribution static synchronous compensator (D-STATCOM) in the selected feeder (Ankober) line of the substation. After implementing the proposed solution, the post compensation minimum voltage was improved to 0.9542 pu. The overall real and reactive power loss was also reduced by 62.87% and 61.84% respectively. Finally, the feeder cost after installing a single optimal D-STATCOM is reduced from the base case cost of 116,336.3$ to 61,339.06$. Thus, this proposed optimal solution was found to be best efficient for the enhancement of the feeder performance. Key words: Distribution system, FACTS, Feeder line, Flower pollination, Fuzzy logic Power loss, Voltage profile