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Urban solution for Singapore

Compact GIS technology enables substations to “hide” in the city

Singapore is the second smallest country in Asia, with over five million people living on just 710 square kilometers. Modest in geographical size but an economic powerhouse, the city is one of the most densely populated metropolises in the world.

Singapore’s annual electricity consumption is estimated at around 43 billion kilowatt hours and is expected to rise at over three percent per year over the next five years. 

One of SP PowerGrid’s major challenges is to find space for the electrical substations needed to meet Singapore’s growing demand for power – for this is a city where transmission towers or overhead lines are nowhere in sight. 

To address the increasing electricity demand, six new turnkey substations utilizing ABB’s compact 66-kilovolt (kV) GIS technology will be constructed across the island, including an underground substation. ABB will design, supply, install, test and commission the substations which include ELK-04 type GIS, IEC 61850 compliant automation, control and protection, and ancillary equipment. 

Compact GIS technology enables a footprint reduction of up to 70 percent in the space occupied by a substation compared to conventional air-insulated switchgear installations. When deployed as an underground substation, up to 98 percent of the installation’s volume can be hidden underground. These innovative and proven indoor and underground solutions enable the most stringent requirements for power supply within urban areas to be fully met while allowing for easy maintenance access and future expansions. 

Main data

Commissioning year: 2017
Supply voltage:


Main equipment:

ELK-04 type GIS, IEC 61850 compliant automation, control and protection, and ancillary equipment

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