PT PLN (Persero), through its North Sumatra Main Development Unit (UIP), has successfully energized the 150 kV Blangpidie–Tapak Tuan High Voltage Overhead Line (SUTT) along with the 150 kV Blangpidie Extension Substation and the 150 kV Tapak Tuan Substation with a capacity of 30 Mega Volt Ampere (MVA).
The newly operational infrastructure forms part of PLN’s efforts to strengthen the backbone of the electricity system along the west coast of Aceh, particularly in South Aceh Regency. The project is also aimed at reducing reliance on diesel-powered power plants (PLTD) in the region.
Acting Regent of South Aceh, Baital Mukadis, welcomed the development, stating that the operation of the Tapak Tuan Substation would enhance the reliability and quality of electricity supply. He expressed optimism that improved system stability would support public services, community activities, and regional economic growth.
PLN President Director Darmawan Prasodjo said the energization aligns with the company’s commitment to supporting President Prabowo Subianto’s Asta Cita vision, particularly in advancing national energy self-sufficiency. He noted that the infrastructure strengthens energy security by reducing dependence on fossil fuel-based power generation.
According to Dewanto, General Manager of PLN UIP North Sumatra, the 150 kV Blangpidie–Tapak Tuan SUTT spans 115 circuit kilometers and comprises 166 transmission towers. The line serves as a regional interconnection, helping maintain voltage quality, improve supply continuity, and connect the electricity systems from Blangpidie in Southwest Aceh to Samadua in South Aceh.
The project is expected to reduce diesel consumption by an average of 638.6 kiloliters per month. A 30 MVA transformer has also been prepared to accommodate growing electricity demand from households, businesses, and industries.
With the transmission line now operational, South Aceh is set to eliminate its dependence on medium-voltage grids and diesel generators. The Kota Fajar diesel power plant will cease operations as the high-voltage system becomes fully functional.
PLN stated that the new infrastructure will enhance voltage stability, allow more flexible load maneuvering during disruptions, and significantly reduce the risk of blackouts. The company also emphasized that the project was executed in compliance with technical standards and occupational health and safety (K3) regulations, with support from local government authorities.
Through this development, PLN reaffirmed its commitment to building reliable, safe, and sustainable electricity infrastructure to support economic growth and public welfare across Indonesia.
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