Indonesia’s Electricity Systems – Kalimantan Selatan, Tengah & Timur

The Kalimantan Selatan, Tengah and Timur network currently comprises two separate systems that are expected to be interconnected by the end of 2017. The Barito system is located in the southeast part of Kalimantan (in Kalimantan Selatan and Kalimantan Tengah provinces) while the Mahakam system occupies east Kalimantan (in Kalimantan Timur province).

At a Glance

Operational systems: Kalimantan Selatan & Tengah (Barito)
Kalimantan Timur (Mahakam)
Operating voltages: 150kV, 70kV, 20kV, 0.4kV
Energy sales (2017): 7,494 GWh
Peak load (2016): Barito: 552 MW
Mahakam: 429 MW
Installed capacity (2016): Barito: 710 MW
Mahakam: 761 MW
Firm capacity (2016): Barito: 665 MW
Mahakam: 482 MW
Maximum reserve margin at peak load (2016): Barito: 20.44%
Mahakam: 12.35%
Base Generation Cost (2016): Barito: 1,203 Rp/kWh
Mahakam: 1,357 Rp/kWh

Power Plant Fuel Mix

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

Kalimantan Selatan & Tengah (Barito):

Kalimantan Timur (Mahakam):

Operational Characteristics

The Barito and Mahakam systems are currently separate standalone networks, although an interconnector (Tanjung-Kuaro-Petung-Kariangau) is currently under construction and is expected to be completed by the end of 2017.

The system dispatchers are PLN AP2B Kalselteng for the Barito system (based in Banjarbaru) and PLN AP2B Kaltim for the Mahakam system (based in Balikpapan).

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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