PLN Modernises Jamali Control System to Strengthen National Electricity Reliability
PT PLN (Persero) Java, Madura and Bali Load Control Unit (UIP2B Jamali) is continuing the transformation of its electricity control system through the modernisation of its Supervisory Control and Data Acquisition–Energy Management System (SCADA-EMS). The move forms part of PLN’s digital transformation to improve the reliability of electricity supply whilst supporting the acceleration of the national energy transition.
General Manager of PLN UIP2B Jamali, Munawwar Furqan, explained that the modernisation was carried out because the SCADA-EMS system in use since 2005 had reached its end of life, meaning it no longer received hardware or software support from the manufacturer.
“The needs of the electricity system today are increasingly complex. We must be able to accommodate load growth, the digitalisation of operations, and the integration of new renewable energy (EBT) generation. That is why modernisation is a very important step,” said Munawwar, quoted from his statement on Saturday, 18 July 2026.
One of the main changes is the shift of the control system from a regional model to a centralised one. All system control is now concentrated at the Main Control Center (MCC) in Gandul, Depok, with a Disaster Recovery Center (DRC) in Ungaran as a backup centre, making system operation more integrated and reliable.
The latest-generation SCADA-EMS is also equipped with various advanced features, such as an Automatic Dispatch System, Digital Twin, weather-based predictive forecasting tools, and strengthened cyber security. This technology enables PLN to anticipate disruptions more quickly and supports the integration of ever-growing renewable energy generation.
Munawwar added that the migration from the old system to the new one was successfully carried out on 3 June 2026 and has now entered the parallel operation phase. All stages were carried out gradually with various risk mitigations to avoid disrupting the continuity of electricity supply to customers. Full implementation is targeted for completion by the end of 2026.
Beyond the technological upgrade, PLN is also strengthening the competence of its human resources through training, certification, and cooperation with various international institutions. PLN has also conducted benchmarking with electricity system operators in the United States, Denmark, Australia, and Germany in order to adopt best practices in the management of modern electricity systems.
Going forward, he said, PLN has also begun utilising Machine Learning, Big Data, and Predictive Analytics to support operational planning, load analysis, and faster and more accurate disruption evaluation.