Indonesia’s Electricity Systems – Sulawesi Bagian Selatan

The Sulawesi Bagian Selatan (SULBAGSEL) system is an interconnected network spread across three provinces – Sulawesi Selatan, Sulawesi Barat and Sulawesi Tengah.

At a Glance

Operational systems: Sulawesi Selatan & Barat (SULSELBAR)
Palu / Sulawesi Tengah (SULTENG)
Operating voltages: 275kV, 150kV, 70kV, 20kV, 0.4kV
Energy sales (2017): 8,542 GWh
Peak load (2017): 1,452 MW
Installed capacity (2017): 1,557 MW
Firm capacity (2017): 1,456 MW
Maximum reserve margin at peak load (2017): 0.275%
Base Generation Cost (2016): 1,078 Rp/kWh

Power Plant Fuel Mix

Fuel mix estimated based on firm capacity as at March 2017:

Operational Characteristics

The dispatcher for the SULBAGSEL system is PLN AP2B based in Makassar.

There is a 275kV transmission line that links the southern system (SULSELBAR) and the Palu / central system (SULTENG). This transmission infrastructure is owned by PT Poso Energy in order to evacuate power generated from the PLTA Poso hydropower plant. PT Poso Energy also owns the 275/150kV substations at Sulewana (GITET Pamona) and Palopo (GITET Latuppa). The link is connected to the PLN network at 150kV GI Palopo (in the southern system) and 150kV GI Poso (in the central system).

The southern and central systems largely operate independently (i.e. maintaining their own energy balance) and there is limited inter-area power transfers except for the power emanating from PLTA Poso.

This article is part of a series examining all of the major electricity networks in Indonesia. For more information and links to all of the articles, please refer to the overview page.

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