PLN, Jakarta sign cooperation agreement

Public utility PT Perusahaan Listrik Negara (PLN) signed on Tuesday a cooperation agreement with the Jakarta administration to build more power infrastructures in order to strengthen power supplies in the capital.

The agreement was signed by PLN?s President Director Sofyan Basir and Governor Basuki Tjahaja Purnama, PLN said in a statement.

Under the agreement, PLN will build more power infrastructures, such as substations and transmission lines, while the Jakarta administration will provide licenses and its own land assets for the projects.

At present, PLN said, Jakarta?s substations and transmission lines is suffering from overload. As such, PLN needs to build more of such facilities in the capital. Power load in the capital now reaches 6,500 MW at night and 7,300 MW during the day. There are 11 high-voltage substations with a voltage of 500 kV and interbus transformer (IBT) capacity of 500 MVA. With such high load, the IBT transformers between high-voltage substations carry 80 percent above their normal capacity, even 90 percent, which is an overload situation.

PLN plans to build new high-voltage substations in five locations with 500 kV to 150 kV IBT and a minimum capacity of 500 MVA. They are expected to come onstream in 2018-2019.

At the same time, PLN, through uprating program, will install new transmission lines and underground cables, while replacing conductors with new ones with new technology that is able to better transmit power.

Editing by Johannes Simbolon