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Power Quality

Singapore has one of the most reliable supply of electricity.

According to the latest international benchmarking report by DNV GL in 2018, Singapore’s electricity grid is ranked top among major cities. We have an average interruption time of less than 1 minute per customer a year.


SAIDI 2017

Like all electricity supply systems, there is the occasional voltage dip, which is a momentary reduction in electricity supply voltage and not a power failure.

Voltage dips are generally caused by failure of high voltage equipment. Through proper maintenance of such equipment, we strive to keep the frequency of voltage dips in the electricity system to the minimum.

The table below gives information on voltage dip incidents in Singapore.

For the latest update on voltage dip incidents, consumers can call the SP PowerGrid Ltd’s 24-hour Electricity Service Centre at tel: 1800 778 8888 or regulatory action taken against Licensed Workers.


Search For
Date Owner / Location Of Equipment / Cable Type Of Equipment / Cable Name of Manufacturer Licensed Electrical Engineer In-Charge (if applicable)
28 Nov 2021 SP PowerAssets Ltd, LKN Bldg 22kV substation 22kV/LV Transformer ABB N.A.
24 Nov 2021 HSBC Institutional Trust Services (Singapore) Limited As Trustee Of Ascendas Real Estate Investment Trust 1 Kaki Bukit View Techview Singapore 415941 22kV/LV Transformer ABB Tan Tock Peng
14 Nov 2021 SP PowerAssets Ltd, 400kV circuit between Labrador 400kV substation and West Jurong Island 400kV substation 400kV XLPE Cable Furukawa Electric N.A.
10 Nov 2021 SP PowerAssets Ltd, 6.6kV circuit between Chip Bee Gdn 22/6.6kV substation and Cornwall Gdn No.2 6.6kV substation 6.6kV XLPE Cable Kukje N.A.
03 Nov 2021 HSBC Institutional Trust Services (Singapore) Limited As Trustee - Manager Of RCS Trust 2, 4, 250 & 252 Stamford Road & North Bridge Road Singapore 178882 22kV/LV Transformer ABB Lee Wai Meng
01 Oct 2021 Natsteel Holdings Pte Ltd 22 Tanjong Kling Road Singapore 628048 22kV Air Circuit Breaker ABB Ang Koh Seng
05 Sep 2021 Rokko Leadframes Pte Ltd 27 Tuas Avenue 2 Singapore 639458 Voltage Transformer Balleau (Model: VKM 24) Leong Yat Seng
27 Aug 2021 SP PowerAssets Ltd, Marsiling 66/22kV substation 22kV/LV Transformer Meiden N.A.
14 Aug 2021 Siltronic Singapore Pte Ltd 10 Tampines Industrial Avenue 5 Singapore 528820 22kV Cable Termination Sucofit Wong Kok Liang
13 Aug 2021 Engineering Manufacturing Services (S) Pte Ltd 60 Benoi Road Singapore 629906 Cable 6.6kV XLPE/SWA/PE Furukawa Philip Su Mun Poh
12 Aug 2021 SP PowerAssets Ltd, 6.6kV circuit between Scenic Hts and President Theatre 6.6kV substations 6.6kV XLPE Cable Xinjiang Tebian Electric Apparatus Stock N.A.
01 Jul 2021 Ed. Zublin, AG Singapore Branch 60A Jalan Bahar Site Office, DTSS Phase 2 - Contract T-07 Singapore 649736 400V LV Switchboard SG Electrical Equipment Suppliers and Manufacturing Pte Ltd Tan Sze Yan
21 Jun 2021 SP PowerAssets Ltd, 6.6kV circuit between Juying Pri Sch and Jurong West St 91 Blk 934 substations 6.6kV XLPE Cable Pacific Electric Wire & Cable N.A.
04 May 2021 JTC Corporation 1 Banyan View Singapore 627521 22kV Cable Termination Raychem Chin Hin Pok
18 Apr 2021 Sembcorp Marine Integrated Yard Pte Ltd Sembcorp Marine, Admiralty Yard Admiralty Road West Singapore 759956 6.6kV Cable Joint 6.6kV Cable Joint Tan Chek Yuan
13 Apr 2021 HSBC Institutional Trust Services (Singapore) Limited As Trustee Of Ascendas Real Estate Investment Trust 1 Kaki Bukit View Techview Singapore 415941 22kV Cable Termination Sucofit Tan Tock Peng
25 Mar 2021 Defence Science And Technology Agency Sungei Gedong Camp Sungei Gedong Road Singapore 710000 6.6kV Switchgear ABB Hoo Wei Qiang
11 Mar 2021 SP PowerAssets Ltd, 22kV circuit between Labrador 230kV substation and Skylight 22kV substation 22kV Cable Joint 3M N.A.
02 Mar 2021 PSA Corporation Limited PSA Container Terminal Keppel & Tanjong Pagar Terminal Singapore 090000 6.6kV XLPE Cable Gold Star Cheah Wi Kwong
18 Feb 2021 SP PowerAssets Ltd, 6.6kV circuit between Yishun Ctrl Blk 323 22/6.6kV and Yishun Ring Rd Blk 356 6.6kV substations 6.6kV XLPE Cable Pacific Electric Wire & Cable N.A.
01 Feb 2021 Keppel Shipyard Limited 15 Benoi Road Singapore 629888 6.6kV PILC Cable PILC Cable Wan Siew Kay Tom
08 Jan 2021 Glory Wood Products (Pte) Ltd 17 Sungei Kadut Street 3 Singapore 729148 6.6kV Switchgear Yorkshire Switchgear Teo Chor Kok
01 Jan 2021 Singapore Refining Company Private Limited Lot A1259B Pulau Merlimau Singapore 610000 22kV/3.3kV Transformer Meiden Lee Wai Meng
30 Oct 2020 SP PowerAssets Ltd, North Link No 3 Transformer Station 22kV/LV Transformer Alstom N.A.
18 Sep 2020 JTC Corporation 1 Banyan View Singapore 627521 Schneider MV Motorpact Panel Schneider Electric Chin Hin Pok
13 Sep 2020 Keppel Merlimau Cogen, KMC CCP2 Generator Step Up Transformer Surge Arrestor Crompton Greaves N.A.
12 Sep 2020 Digital Singapore 1 Pte Ltd 3 Loyang Way Singapore 508719 22kV GIS Switchboard Schneider Electric Wong Kok Liang
16 Aug 2020 SP PowerAssets Ltd, 6.6kV circuit between Jln Pemimpin 22/6.6kV substation and Robert Bosch 6.6kV substation 6.6kV XLPE Cable Dainichi-Nippon N.A.
13 Aug 2020 SP PowerAssets Ltd, 6.6kV Switchgear at AMK St 22 Blk 215 22/6.6kV substation 6.6kV Switchgear ABB N.A.
06 Jul 2020 Hotel Properties Limited 581 Orchard Road Singapore 238883 22kV/LV Transformer ABB Yeo Chin Yin
05 Jun 2020 SP PowerAssets Ltd, 22kV circuit between Bukit Batok St 34 Blk 345 substation and Bukit Batok Town Centre Blk 644A substation 22kV XLPE Cable Gold Star N.A.
04 Jun 2020 Cogent Land Capital Pte Ltd 720 Dunearn Road Singapore 289631 22kV Switchgear Yorkshire YSF6 Chong Ah Chye
15 Apr 2020 SP PowerAssets Ltd, 22kV interconnector feeder at MacAlister Rd 66kV substation 22kV Cable Joint 3M N.A.
12 Apr 2020 SP PowerAssets Ltd, 6.6kV circuit between Marine Parade 66kV substation and Parkway View 6.6kV substation 6.6kV XLPE Cable Hitachi N.A.
08 Apr 2020 PSA Corporation Limited Brani Terminal Pulau Brani Singapore 090000 6.6kV XLPE Cable Fujikura Cable Cheah Wi Kwong
22 Mar 2020 Royal Group Development Pte Ltd 2 Bukit Manis Road Singapore 099891 22kV Voltage Transformer Balteau Wan Siew Kay Tom
20 Mar 2020 The Management Corporation - Strata Title Plan No. 1164 138 Cecil Street Cecil Court Singapore 069538 22kV Voltage Transformer Yorkshire Yeo Chin Yin
16 Mar 2020 SBS Transit DTL Pte Ltd 350 Woodlands Road Downtown Line Singapore 677730 22kV Rectifier Transformer Siemens Tan Kee Choon
07 Mar 2020 Tuas Power Generation Pte Ltd, 400kV Switch House 400kV GIS Circuit Breaker Toshiba N.A.
05 Mar 2020 SP PowerAssets Ltd, 22kV circuit between Jurong West 66/22kV substation and Jurong West St 71 Blk 712B 22kV substation 22kV Cable Joint 3M N.A.
24 Feb 2020 SP PowerAssets Ltd, 6.6kV circuit between Yishun Ring Rd Blk 114 22/6.6kV substation and Yishun West Area Office Blk 701A substation 6.6kV XLPE Cable Taihan Electric Wire N.A.
22 Feb 2020 SP PowerAssets Ltd, 22kV circuit between Pulau Seraya 66/22kV substation and Chemical Specialties 22kV substation 22kV Cable Joint 3M N.A.
13 Feb 2020 SP PowerAssets Ltd, 6.6kV cable between AMK St 22 Blk 215 22/6.6kV substation switchgear and its 6.6kV/LV transformer 6.6kV XLPE Cable Gold Star N.A.
11 Feb 2020 Changi Airport Group (Singapore) Pte Ltd 80 Airport Boulevard Changi Airport Singapore 819642 22kV Cable Termination Raychem Leng Meng Kae

To view Regulatory Action against Licensed Workers, please click here.

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