Power networks/Philippines

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This page aims to coordinate the efforts of mapping electricity-related objects in the Philippines. It is intended to be a guide for mapping power lines from aerial imagery and on-the-ground observation.

Networks

A segment of Sucat-Paco-Araneta-Balintawak transmission line along Gregorio Araneta Avenue, Quezon City.
A segment of Hermosa-Duhat-Balintawak transmission line along Candaba Viaduct of North Luzon Expressway (NLEX). This is a part of the relocated San Simon-Pulilan segment of the transmission line, which was done in March 2011 due to the widening of MacArthur Highway, where the steel poles posed a safety hazard.

The Philippine power grid is divided into a transmission, sub-transmission, and distribution sector, and the grid frequency is at 60 Hz, the same as with North America.

The transmission grid, operating at 69 kV, 115 kV, 138 kV, 230 kV, and 500 kV, is divided into three grids, the Luzon Grid, the Visayas Grid, and the Mindanao Grid. Luzon Grid uses voltages of 69 kV, 115 kV, 230 kV, and 500 kV, while the Visayas and Mindanao grids use 69 kV, 138 kV, and 230 kV. The Luzon and Visayas grids are interconnected through the 350 kV DC HVDC Leyte-Luzon transmission line, while the Mindanao Grid remains isolated until the completion of a HVDC link from Negros to Lanao del Norte. Off-grid islands with multiple power sources (local power plants and offshore power barges) have transmission systems operating at 69 kV.

The transmission system is operated by the National Grid Corporation of the Philippines (NGCP), and facilities are owned by the National Transmission Corporation (TransCo), a state-owned company spun off from the National Power Corporation (NPC/NAPOCOR) after the Philippine electricity sector is formally deregulated in 2001.

There are also sub-transmission grids, which operate with voltages of 69 kV and 115 kV. NGCP normally runs these grids in conjunction with the transmission system in most of the country, but in poorer areas, 69 kV lines still function as transmission lines, and in Ilocos Norte, 115 kV is used for transmission. Power distributors and electric cooperatives also have their own sub-transmission systems, and many sub-transmission lines once maintained by NGCP are being handed to .

The distribution networks are operated by a handful of both private and public power distributors, and hundreds of electric cooperatives, collectively called power distribution companies (PDCs) by the Department of Energy (DOE).

Guidelines

Power lines

Standard voltages for power lines, from highest to lowest, are as follows. Unless otherwise marked, voltages are for three-phase systems, measured between each live wire. Distribution lines have a fourth neutral wire connected to ground, and both line-to-neutral (for single-wire lines) and line-to-line (for two or three-wire lines) voltages are listed.

Voltage Standard voltage code Network Comments Appearance Images
500 kV 9 Transmission Extra-high-voltage line voltage in Luzon. Existing lines already mapped fully. Some lines operating at 230 kV (e.g. Naga-Tayabas). Very tall towers. Lines use quadruple-bundle conductors. Some exceptions are the very tall steel poles inside Nagsaag EHV substation in Pangasinan.
Nagsaag EHV substation (NGCP), San Manuel jf673.jpg

0307jfPaddy fields grasslands trees Bagong Silang San Miguel Bulacan Farm Market Roadfvf 02.jpg

98312485.jpg

36022771.jpg
230 kV 8 Used on most transmission lines in Luzon. In Visayas and Mindanao, used for bulk transmission. some lines operate at 138 kV. Small to large double-circuit towers, or single delta towers. Newer lines in urban areas may use steel poles. H-frame in limited use. Some major ones upgraded to use double or quadruple-bundle conductor. A few lines with low ground clearance have some conductors supported by concrete poles.
09962jfLandscape paddy field villages trees Bridges Bulacan Bypass Arterial Roadfvf 06.jpg

Manila–Cavite Expressway.jpg

Lagunajf4084 10.JPG

10359160 339997986170525 859413123730987883 n.jpg

Steel pole 400 Hermosa Duhat Balintawak transmission line.jpg
138 kV 7 Used on the Visayas and Mindanao grids.
115 kV 6 Transmission/sub-transmission Medium to tall poles, and H-frame towers. Lines in Ilocos primarily use conventional towers. Meralco primary uses double-bundle conductor for upgrades and new lines. Few lines branching.
Tagaytayjf9771 08.JPG
69 kV 5 Used for sub-transmission in the majority of the country. Medium to tall poles, and H-frame towers. Lines may branch off to supply a large industrial customer or a distribution substation.
Famy,Lagunajf9888 04.JPG
20/34.5 kV 4 Distribution Mostly used for distribution by Meralco in most of its coverage area. Other distributors operating lines with this voltage are CEPALCO (in Cagayan de Oro), and LIMA Enerzone (at LIMA Technology Center in Lipa and Malvar, Batangas) Medium-size poles, usually placed roadside. Multiple wires and circuits may not be obvious from imagery. Networks form large webs of lines with many branches that may carry one or two wires. Step-down transformers normally mounted on poles.
25 kV single-phase none International AC railway electrification voltage. No installations yet, but is being planned for the future Mindanao Railway network.
7.97/13.8 kV 3 Used by most electric cooperatives, Meralco (in southern Cavite, central Laguna, Batangas City and San Pascual, Batangas, and northern Bulacan), and other electricity distributors. Wind farms also use this to collect power from each windmill. Medium-size poles, usually placed roadside. Multiple wires and circuits may not be obvious from imagery. Networks form large webs of lines with many branches ("laterals") that may carry one or two wires. Step-down transformers normally mounted on poles.
3.6/6.28 kV 2 Used by Meralco on older inner-city lines in Metro Manila. Most lines being replaced by 34.5 kV facilities.
127/220, 400, and 254/440 V none Voltage supplied to large commercial/industrial consumers, and high-rise buildings. Supplied through a three-phase transformer (usually a set of two or three single-phase ones), a large ground-mounted transformer, or an indoor substation. Wires usually connect directly to a single building. Rarely used for wide-area distribution.
230 V single-phase none Standard supply voltage for homes and small businesses and industries. Supplied from a single transformer connected to 1 or 2 wires of a primary distribution line. Smaller (9m) poles. Lines either use two wires (most common) or three (American-style split-phase, with 115/230 kV. Example would be those by Meralco).
Towers of the HVDC Leyte-Luzon

Some nonstandard voltages are 350 kV for the HVDC-Leyte Luzon transmission line and submarine cable, and 13.2/23 kV for the Visayas Electric Company (VECO) distribution network in Cebu.

Most transmission lines have two circuits (6 wires), though there are also those with only one circuit (3 wires). Sub-transmission lines are often single-circuit, while distribution lines may have more that 2 circuits carried by the same poles or structures. This do not include the ground cable used for lightning protection.

Part of a distribution circuit can be fed from another substation, where one substation has to be shut down, or a line segment is being repaired. Transmission and sub-transmission lines are usually looped in most places.

Substations

Operators

See WikiProject Power networks/Philippines/Operators for guidance when tagging operators of any power line in the Philippines by region.

Tagging examples

Image Tags Notes
Jf1394Transmission Lubao Lines Philippinesfvf 01.JPG

Transmission tower
ref=56
power=tower
structure=lattice
material=steel
design:incomplete=yes
line_attachment=anchor
ref:NGCP=(8LI1DUH-HER)350
Transmission line
name=Hermosa-Duhat-Balintawak Transmission Line
power=line
voltage=230000
cables=3
circuits=1
wires=2
operator=National Grid Corporation of the Philippines
ref=8LI1DUH-HER; 8LI1QUE-DUH; 8LI1QUE-HER; RHB; 82YY-85HM
start_date=06-1994

FvfSanSimonNLEX9227 23.JPG

Transmission tower
ref=227
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
ref:NGCP=(8LI1DUH-HER)182

Screenshotter--sanFernandoPampangatobocaueBulacanviaNLEX-6’41”.png

Transmission tower
ref=230
power=tower
structure=tubular
material=steel
design=flag
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)179

ref=231
power=tower
structure=tubular
material=steel
design=flag
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)178

ref=232
power=tower
structure=tubular
material=steel
design=flag
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)177

ref=233
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)176

SanSimonPampanga9552 18.JPG

Transmission tower
ref=234
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
old_ref=228
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)175

FvfNLExPampanga2280 21.JPG

Transmission tower
ref=244
power=tower
structure=tubular
material=steel
design=flag
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)165

ref=245
power=tower
structure=tubular
material=steel
design=flag
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)164

FvfNLExPampanga2240 07.JPG

Transmission tower
ref=253
power=tower
structure=tubular
material=steel
design=triangle
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)156

07362jfRiverside Districts Candaba Viaduct Apalit Pampanga villagesfvf 12.JPG

Transmission tower
ref=255
power=tower
structure=lattice
material=steel
design:incomplete=yes
line_attachment=anchor
operator=National Grid Corporation of the Philippines
owner=National Transmission Corporation
ref:NGCP=(8LI1DUH-HER)154

Screenshotter--sanFernandoPampangatobocaueBulacanviaNLEX-9’56”.png

Transmission tower
ref=264
power=tower
structure=tubular
material=steel
design=flag
line_attachment=suspension
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)145

ref=265
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)144

ref=266
power=tower
structure=lattice
material=steel
design:incomplete=yes
line_attachment=anchor
old:ref=264
operator=National Grid Corporation of the Philippines
owner=National Transmission Corporation
ref:NGCP=(8LI1DUH-HER)143

Screenshotter--sanFernandoPampangatobocaueBulacanviaNLEX-10’45”.png

Transmission tower
ref=271
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
operator=National Grid Corporation of the Philippines
ref:NGCP=(8LI1DUH-HER)138

Screenshotter--sanFernandoPampangatobocaueBulacanviaNLEX-18’57”.png

Transmission tower
ref=390
power=tower
structure=tubular
material=steel
design=triangle
line_attachment=suspension
tower:colour=aluminum
ref:NGCP=(8LI1DUH-HER)43

FvfSanLeonardoNE9754 26.JPG

Transmission tower
power=tower
structure=lattice
material=steel
design=delta
line_attachment=suspension

09962jfLandscape paddy field villages trees Bridges Bulacan Bypass Arterial Roadfvf 09.jpg

Transmission tower
ref=162A
power=tower
structure=tubular
material=steel
design=bipole
line_attachment=anchor
old_ref_1=381
old_ref_2=382
Transmission line
name=Hermosa-San Jose Transmission Line
power=line
voltage=230000
cables=6
circuits=2
wires=2
operator=National Grid Corporation of the Philippines

0033jfDolores San Agustin, City of San Fernando MacArthur Highway Pampangafvf 13.jpg

Transmission tower
power=tower
structure=lattice
material=steel
design=three-level
line_attachment=anchor
tower:colour=aluminum
Transmission line
name=Mexico-Hermosa Transmission Line
power=line
voltage=230000
cables=6
circuits=2
wires=1
operator=National Grid Corporation of the Philippines
ref=8LI1MEX-HER; 8LI2MEX-HER

8872South Luzon Expressway Metro Manila Skyway 23.jpg

Transmission tower
ref=50
power=tower
structure=tubular
material=steel
design=three-level
line_attachment=anchor
operator=National Grid Corporation of the Philippines
owner=National Transmission Corporation

ref=49
power=tower
structure=lattice
material=steel
line_attachment=anchor

ref=48
power=tower
structure=lattice
material=steel
line_attachment=anchor

Transmission line
name=Bay-Biñan Transmission Line
power=line
voltage=230000
cables=6
circuits=2
wires=2; 4
operator=National Grid Corporation of the Philippines
owner=National Transmission Corporation
ref=8LI1BIN-BYZ; 8LI2BIN-BYZ

Magallanes Interchange in Makati from the Magallanes MRT Station 01.jpg

Transmission tower
ref=100
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
ref:NGCP=(8LI1MNA-MUN)43

ref=101
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
ref:NGCP=(8LI1MNA-MUN)42

Transmission line
name=Sucat-Paco-Araneta-Balintawak Transmission Line
power=line
voltage=230000
cables=3
circuits=1
wires=2
operator=National Grid Corporation of the Philippines
ref=8LI1MNA-MUN; 8LI1DIM-MNA; 8LI1QUE-DIM; SA
start_date=2000

01658jfSanta Mesa PNR Station Pandacan Railway tracks Bridge Manilafvf 39.jpg

Transmission tower
ref=154
power=tower
structure=lattice
material=steel
design=flag
line_attachment=anchor
ref:NGCP=(8LI1DIM-MNA)32

ref=155
power=tower
structure=tubular
material=steel
design=flag
line_attachment=anchor
ref:NGCP=(8LI1DIM-MNA)31

Power lines mapped

Main article: Power networks/Philippines/Power lines mapped

Components of power lines

Main article: Power networks/Philippines/Components of power lines

Number of towers that were painted with aluminum or zinc paint

Main article: Power networks/Philippines/Number of towers that were painted with aluminum or zinc paint

Number of retired structures

Main article: Power networks/Philippines/Number of retired structures

Power line references

Main article: Power networks/Philippines/Power line references

Power line structures references

Main article: Power networks/Philippines/Power line structures references

Abbreviation of substations and power plants

Main article: Power networks/Philippines/Abbreviation of substations and power plants

Mapped transmission and subtransmission lines constructed by each companies

Main article: Power networks/Philippines/Mapped transmission and subtransmission lines constructed by each companies

Power stations/substations mapped

Main article: Power networks/Philippines/Power stations/substations mapped

List of relocated or reused and retired structures

Main article: Power networks/Philippines/List of relocated or reused and retired structures

Statistics

  • Amount of painted structures: 581 (steel poles), 259 (lattice towers), 2 (portal towers). Total: 842
  • Amount of reused structures: 18
  • Mapped power lines: 30 (NGCP), 1 (Meralco), 2 (BATELEC-I), 5 (BATELEC-II, including lines or line section divested from NGCP in 2011), 1 (LIMA Enerzone (LIMA Utilities), all from NGCP, originally commissioned by NAPOCOR). Total: 39