Analisa Perhitungan ENS (Energy Not Saved) Pada Penyulang Solo di PT PLN (Persero) ULP Bengkalis

The availability and continuity of electrical energy supply are important factors in supporting community activities and economic growth. PT PLN (Persero) as the main provider of electrical energy in Indonesia has a responsibility to maintain the reliability of the distribution system, including the feeder network. This study aims to analyze the calculation of Energy Not Served (ENS) at the Solo Feeder at PT PLN (Persero) ULP Bengkalis as one indicator of distribution network reliability performance. ENS is the amount of energy that cannot be supplied to customers due to disruptions or blackouts, which is calculated based on the duration of the disruption and the number of affected loads. The methods used in this study include collecting disturbance data over a specific period, identifying disturbance points, and calculating the ENS based on applicable standards at PT PLN. The analysis results indicate the magnitude of the ENS values that occurred and the factors influencing the high ENS figures at the feeder. These findings are expected to serve as a basis for evaluation in planning preventive maintenance and improving the reliability of the electricity distribution system in the Bengkalis ULP work area.