Analisa Nilai SAIDI Penyulang Tegal PLN Bengkalis Sebagai Indikator Keandalan Sistem Distribusi Listrik di PT PLN (Persero) ULP Bengkalis

The reliability of the electric power distribution system is a crucial aspect in maintaining continuous service ton customers. One of the key indicators used to measure this reliability is SAIDI (System Average Interruption Duration Index), which represents the average duration of power interruptions experienced by customers within a specific period. This study aims to analyze the SAIDI value of the Tegal Feeder at PT. PLN (Persero) ULP Bengkalis during the period from January to March 2025. The data analyzed includes the duration and frequency of power outages, as well as the number of affected customers. The analysis shows that the highest SAIDI value occurred in January, reaching 16,503 minute/customer, while the lowest value was in March at 5,766 minute/customer. The fluctuating SAIDI values indicate the need for improvements in the protection system and distribution network maintenance. This study provides strategic recommendations to enhance system reliability, including strengthening protection systems, routine tree trimming, and increasing public awareness regarding electrical network safety.