Indonesia’s electrical energy potential is very significant in supporting the manufacturing and service industries. The efforts of state power companies to manage their supply chain systems require a sustainable strategy to increase end-customer satisfaction in global competition. One strategy in achieving sustainable competence can be done through measuring and managing supply chain performance using the SCOR Method and Value Stream Mapping (VSM). The implementation of these two methods will be able to integrate every process and decision making in increasing productivity, especially in the company’s supply chain activities. Measurements result of the supply chain performance on XYZ Berau Company from 2019 to 2021 by implementing the SCOR 12.0 and the value stream mapping (VSM) method showed an increase, where the realization of supply chain performance in 2021 was 91.42 with a good category. However, there is still a gap in the KPI value of 8.58, where the highest Gap value is in KPI P-3 material fulfillment duration. For 2021, the Gap Value for KPI P-3 material fulfillment duration is 4.17 or 48.60% of the total existing gap. The application of the VSM method shows that for KPI P-3 material fulfillment duration, the value-added ratio current state is 63.57% with a value-added activity of 44.5 days, compared to the total process cycle time of 70 days. Research recommendations have brought improvement, resulting in the value-added ratio future state increased by 98.89%, with value-added activity for 44.5 days, from the total process cycle time of 45 days. So, the 45 days target for KPI P-3 material fulfillment duration can be achieved.