WikiProject Power networks/Philippines

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This page aims to coordinate the efforts of mapping electricity-related objects in the Philippines.


Power Grid Status

Most power transmission lines are owned/operated, maintained, expanded, and constructed (for transmission projects since 2009) by the National Grid Corporation of the Philippines, while power generating sites are owned by various companies. The government-owned National Transmission Corporation also involves on the ownership of these lines and other transmission facilities aside from NGCP. It is currently divided into three grids: the Luzon Power Grid, the Visayas Power Grid, and the Mindanao Power Grid. They are further subdivided into dozens of transmission lines, which carry up to 500 kilo volts of energy.

Minor lines are feeders operated by distribution utilities, like Meralco (Manila Electric Company), and local electric cooperatives/companies, which may also operate subtransmission lines between substations within their power networks and the main power grid by NGCP. The minor lines feed power from the substations to residential and industrial users (although some industrial users also feed power from the subtransmission lines operated by utilities or local electric cooperatives/companies).

National Grid Corporation of the Philippines

operator=National Grid Corporation of the Philippines

The National Grid Corporation of the Philippines (NGCP), a private company given a 50-year concession to operate and expand the Philippine power grid, operates most transmission lines in the Philippines. NGCP-owned transmission lines, with voltages of 69 kV, 115 kV, 138 kV, 230 kV, 350 kV DC, and 500 kV, connects power plants with its substations, and feeds them to utility/cooperative owned substations via sub-transmission lines (69 kV and 115 kV), although the utilities/cooperatives may own their own subtransmission lines, mostly lines once operated by NGCP.

National Transmission Corporation

owner=National Transmission Corporation

operator=National Transmission Corporation

The National Transmission Corporation (TransCo) is a government-owned and controlled corporation that is one of the two owners of transmission facilities (along with NGCP) in the Philippines. It was created in 2001 through the Electric Power Industry Reform Act (RA 9136). It also owns, maintains, and operates the distribution facilities that are located on some of the country's economic or freeport zones and all barangays located within its jurisdiction.




Meralco also operates a network of transmission lines, called sub-transmission lines, that uses either 115 kV or 69 kV. The sub-transmission lines feed power from large substations mainly operated by the National Grid Corporation of the Philippines to Meralco's distribution substations, which may serve a part of a city or municipality or even a whole city/municipality. Occasionally, sub-transmission lines may feed power from a power plant or link to a substation that serves a large industrial customer.


TODO: Add more guidelines on mapping power facilities and power lines

  1. Power generators/power plants are sometimes called "power stations". Do not tag them as power=station. Instead, tag them as power=plant. The generators inside would get the power=generator tag.
  2. Power stations are individually named (in most cases) and are called "substations" (e.g. "San Jose del Monte Substation"). Do not tag them as power=sub_station. Instead, tag them as power=substation.
  3. Sub-transmission lines (69 kV to 115 kV, except for two lines in Ilocos Region, which are transmission lines instead) mounted on tubular steel, concrete, or wood poles, usually shared with minor power lines and telephone/cable television lines, like those owned by the National Grid Corporation of the Philippines, Meralco and some electric cooperatives/companies on most provinces, are to tagged as power=tower(usually for H-frames and lattice structures) or power=pole(for most structures) and the specific tower or pole design, commonly flag, triangular, H-frame, or asymmetrical, depending on the arrangement of the cables and insulators on the pole, whether the insulators are mounted on a cross-arm or on the pole itself. Some utility poles have designs other than the usual cross-arm mounted insulator type, like flag, triangular, or asymmetrical (with insulators mounted on the pole or on an adaptor made from cross-arms typically found on most poles) but they should be tagged with power=pole. Insulators or cross-arms only carrying ground wires should not be considered when tagging design of a sub-transmission pole or utility pole.
  4. Power lines below 69 kV (e.g. 20 kV) should be mapped as power=minor_line. If line has voltages higher than 69 kV, they should be mapped as power=line. The frequency of the power grid in the Philippines is 60 Hz, except high-voltage direct current, like the HVDC Luzon Leyte, which should be tagged with frequency=0, used to mark HVDC or DC contact lines or third rail used for railways and rapid transit systems.
  5. Tagging a tower with owner=National Transmission Corporation or operator=National Transmission Corporation is optional. If its high voltage sign says "TransCo Property" even though that structure/s is/are part of a project done by NGCP (the purpose for this is because TransCo is still involved on the ownership of transmission facilities) such as towers 255, 256, 266, and 267 of Hermosa-Balintawak transmission line and that line or facility was built when TransCo is still the operator, you may tag them.
  6. If a tower that is made of steel was painted with aluminum paint by NGCP because it lasts for more than 20 years which starts a rusting or decaying stage, you may tag it as colour=aluminum or colour=zinc.


Here is a list of some common voltages used in power lines in the Philippines

voltage description Line characteristics
220/440 Typical voltage on secondary distribution lines (split-phase from pole-mounted transformers, or rarely, distribution substations). Primarily used in houses and establishments that do not require three-phase appliances, like small businesses.
  • Triple-wire (two phase wires and one neutral/ground wire), but two wires without a neutral are common in the provinces.
  • Usually twisted insulated cable, but bare wires are also used, mainly in split-phase systems without a neutral installed.
  • Uses small insulators, either one or a set of three.
  • Mounted on poles, mostly under primary distribution lines, but may run on a separate set of poles, especially on residential areas.
220/380 Three-phase secondary distribution voltage, usually used to feed large commercial users.
  • Four wire or three wire (wye/Y or delta ) system, with three phase wires and one neutral/ground wire, or three wires with no neutral.
  • Voltage usually obtained from a pole-mounted transformer bank composed of three single-phase transformers.
  • Line typically serves only one customer, typically commercial users.
220/380/440 Three-phase voltage used for high-leg delta systems. *Voltages are 220/440 volts split-phase for ordinary appliances and lighting, 440 volts three-phase for larger appliances, and 380 volt high-leg voltage.
  • Transformers used can be two, one with two secondary wires (one links to one phase wire from the second transformer), and another carrying three secondary wires (one is a center tap)and larger than the other, or a single-phase transformer with four secondary wires (one is a center tap linked to a neutral wire), usually arranged in groups of three, forming a transformer bank.
3625/6280 Distribution voltage still used on some areas of Metro Manila, and fed by the 34.5 kV system. Most of these systems are already obsoleted (customers connected to 6.28 kV systems being reconnected to the 34.5 kV system, 6.28 kV lines below 34.5 kV lines discarded, or 6.28 kV-only lines replaced by 34.5 kV lines), but still exist on parts of Manila, Pasay, Quezon City, and Parañaque. Transformers of 3.625/6.28 kV lines are distinguishable from those in 34.5 kV lines by having bushings on the side rather than on the top.
7970/13800 (sometimes 7620/13200) Standard three-phase distribution line voltage by many electric cooperatives, but also used by Meralco in certain areas (i.e. northern Bulacan, southern Cavite, part of central Laguna, and Batangas City - San Pascual area). May be found under a 69 kV subtransmission line as a feeder.
  • Uses one or two-shed pin insulators, but typically uses one-shed insulators
  • Transformers found on the line usually has two bushings, but only accommodates one phase.
20000/34500 Standard distribution voltage used by Meralco, but also used by Cagayan Electric Power and Light Company (CEPALCO) in some lines in Cagayan de Oro.
  • Can be either two-phase or three-phase
  • Usually overhead power lines, but may be an underground or overhead cable.
  • Almost placed roadside, with some exceptions
69000 Typical subtransmission line voltage by NGCP and many provincial electric cooperatives. Also used by Meralco on subtransmission line in Bulacan and Batangas City and the Meralco-owned Clark Electric Distribution Company (CEDC) serving Clark Freeport.
  • Usually mounted on single poles, usually with two cross-arms with insulators forming an asymmetric arrangement or an "armless" design, where the insulators are mounted on the pole instead on a cross-arm, but H-frame towers, with two or three poles and a cross-arm, and rarely, lattice towers (used on one 69 kV line in Isabela and another in Pampanga) and tubular steel poles (like on a 69,000 line that leads to Samal, Bataan) are also used. NGCP usually uses both poles with cross-arms and poles with insulators mounted on them directly, but electric cooperatives/utilities and Meralco primarily uses armless poles (Meralco's subtransmission line linking its two substations in Batangas City with the JG Summit chemical plant in Simlong, however, uses both designs, with and without cross-arms, like some NGCP subtransmission line that parallel some of its segments).
  • Uses hanging insulators, mounted on the cross-arm placed on the pole, or pin insulators mounted on the pole itself.
  • Lines may link to large industrial users fed directly to the subtransmission grid.
115000 Standard subtransmission voltage by Meralco, especially on Metro Manila, Laguna, Cavite, Rizal and most of Bulacan. Used also by NGCP on some subtransmission lines in Cavite and transmission lines in Ilocos Region. *Usually mounted on insulators on single poles, either wood,concrete, or steel and with or without cross-arms, but H-frame towers or lattice towers are also used.
  • May feed a large industrial customer connected to the subtransmission grid.
  • Cables are usually single-conductor, but double-bundle cable are also used.
138000 Typical voltage of NGCP transmission lines in Visayas and Mindanao.
230000 Typical voltage of NGCP transmission line in Luzon. *Usually supported by lattice towers, but can also be used on tubular steel poles (i.e. Hermosa-Balintawak, Limay-PPDC, SMC Consolidated Power Plant-Limay, Bay-Biñan, Mexico-Hermosa, Biñan-Muntinlupa, Limay-Hermosa, Limay-GNPower, Hermosa-San Jose, etc.)


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

Power lines mapped

TODO: Add more power lines


115 kV

Name of line Link to relation Originating Point Terminating point Circuits and bundling Notes/status
San Pedro - Pamplona San Pedro Substation Pamplona Substation Single bundle (San Pedro - Alabang), double-bundle (Alabang-Pamplona)

230 kV

Name of Transmission Line Name used by NGCP Link to relation Originating Point Terminating point Circuits and bundling Notes/status
Biñan-Dasmariñas Transmission Line 1524350 (i j p h a m x g) Biñan Substation Dasmariñas Substation Double-circuit, quadruple-bundle
Biñan-Muntinlupa Transmission Line 1524351 (i j p h a m x g) Biñan Substation Muntinlupa Substation Double-circuit, double-bundle Former 115 kV line. Now connected to Muntinlupa Substation.
MakBan-Calauan-Kalayaan Transmission Line 1407254 (i j p h a m x g) Makban Geothermal Power Plant Kalayaan Hydroelectric Power Plant Single-circuit, unbundled Now Lumban - Calauan Transmission Line (after energization of the new parallel Bay - Lumban Transmission Line)
MakBan-Batangas Transmission Line 1407227 (i j p h a m x g) Makban Geothermal Power Plant Batangas Power Substation Double-circuit, quadruple-bundle Renamed Bay - Batangas Transmission Line
San Manuel-Concepcion-Mexico Transmission Line 1447951 (i j p h a m x g) San Manuel Substation Mexico Substation Double-circuit, double-bundle Former single-circuit line on wood H-frame towers.
Mexico-Hermosa Transmission Line 1459152 (i j p h a m x g) Mexico Substation Hermosa Substation Double-circuit, unbundled
Hermosa-Balintawak Transmission Line Hermosa-Quezon Transmission Line (whole line)
Balintawak/Quezon-Duhat Transmission Line (Balintawak Substation to Duhat Overpass, Bocaue, Bulacan)
Duhat-Hermosa Transmission Line (Duhat Overpass to Hermosa Substation)
6966521 (i j p h a m x g) Hermosa Substation Balintawak Substation Single-circuit, double-bundle Has cut-in connection with Meralco Duhat Substation (formerly direct tap connection).
Hermosa-Limay Transmission Line 6756605 (i j p h a m x g) Hermosa Substation Limay Substation Double-circuit, unbundled
Limay-Hermosa Transmission Line 156802419 (i j p hx ) Limay Substation Hermosa Substation Double-circuit, double-bundle
Limay-GNPower Transmission Line 250027678 (i j p hx ) Limay Substation GNPower Mariveles Coal Power Plant Double-circuit, quadruple-bundle
Hermosa-San Jose Transmission Line 6817263 (i j p h a m x g) Hermosa Substation San Jose del Monte Power Substation Double-circuit, double-bundle
Mexico-Balintawak Transmission Line Mexico-Quezon Transmission Line (whole line)
Mexico-Duhat Transmission Line (Mexico Substation to Meralco Duhat Substation)
Duhat-Balintawak/Quezon Transmission Line (Duhat Substation to NGCP Balintawak Substation)
6908495 (i j p h a m x g) Mexico Substation Balintawak Substation Double-circuit, unbundled
Hermosa-Olongapo Transmission Line 7012766 (i j p h a m x g) Hermosa Substation Olongapo Substation Double-circuit, unbundled
San Jose del Monte-Balintawak Transmission Line San Jose-Quezon Transmission Line 6678059 (i j p h a m x g) San Jose del Monte Power Substation Balintawak Substation Double-circuit, unbundled
Bay-Biñan Transmission Line 6847442 (i j p h a m x g) Bay Substation Biñan Substation Double-circuit, double-bundle (steel poles) and quadruple-bundle (lattice towers)
Limay-PPDC Transmission Line 7085142 (i j p h a m x g)
7085143 (i j p h a m x g)
Limay Substation PPDC Park Double-circuit, unbundled
SMC Power Plant-Limay Transmission Line 7085128 (i j p h a m x g)
7085127 (i j p h a m x g)
San Miguel Consolidated Power Plant Limay Substation Double-circuit, quadruple-bundle
Limay-FAB Transmission Line 6903271 (i j p h a m x g) Limay Substation Barangay Malaya, FAB Compound Double-circuit, unbundled
Orion-BNPP Transmission Line 6824330 (i j p h a m x g) Hermosa-Limay Transmission Line, Calungusan, Orion, Bataan Bataan Nuclear Power Plant Double-circuit, unbundled
Concepcion-Clark Transmission Line 7533155 (i j p h a m x g) Concepcion Substation Clark Substation Double-circuit, unbundled
Sucat-Araneta-Balintawak Transmission Line Sucat-Doña Imelda-Quezon Transmission Line (whole line)
Manila-Muntinlupa Transmission Line (Manila/Paco Substation to Muntinlupa Substation)
7496337 (i j p h a m x g) Muntinlupa Substation Araneta Substation Single-circuit, double-bundle
San Rafael-Balintawak Transmission Line San Rafael-Quezon Transmission Line San Rafael Substation Balintawak Substation Double-circuit, unbundled
MSPP-Subic Transmission Line 478081497 (i j p hx ) Morong Solar Power Plant Subic Substation Double-circuit (lattice towers) and single-circuit (steel poles), double-bundle
Calaca-Laguna Technopark-Biñan Power Transmission Line 1576833 (i j p h a m x g) Calaca Power Plant Biñan Substation Double-circuit, double-bundle

500 kV

Name of Transmission Line Link to relation Originating Point Terminating point Circuits and bundling Notes/status
Alaminos-Tayabas Transmission Line 2405491 (i j p h a m x g) Alaminos Tayabas Substation Double-circuit, quadruple-bundle
Alaminos-Dasmariñas Transmission Line 2405524 (i j p h a m x g) Dasmariñas Substation Alaminos Double-circuit, quadruple-bundle
Ilijan-Alaminos Transmission Line 2405751 (i j p h a m x g) Ilijan Power Plant Alaminos Double-circuit, quadruple-bundle
San Jose-Tayabas Transmission Line 2442269 (i j p h a m x g) Tayabas Power Substation San Jose del Monte Power Substation Double-circuit, quadruple-bundle Now complete. Long gap at Tanay and Santa Maria filled up


Name of Transmission Line Link to relation Originating Point Terminating point Circuits and bundling Notes/Status
Bacolod-Kabankalan Transmission Line 1524342 (i j p h a m x g) Bacolod Substation Kabankalan Substation
Negros Geothermal - Bacolod Transmission Line Negros Geothermal Power Plant Bacolod Substation

Components of power lines

Name of line Components Amount of abandoned or reused structures Former amount of structures Total number of structures Former total number of structures
San Pedro - Pamplona 15 steel poles, 26 portal towers, 100 wood poles, 2 h-frame towers 143 145 (including tap to former Muntinlupa Substation)
Biñan-Dasmariñas Transmission Line 44 lattice towers 44
Biñan-Muntinlupa Transmission Line 167 steel poles, 51 lattice towers, 1 h-frame tower 219
Bay-Batangas Transmission Line 102 lattice towers 102
Mexico-Hermosa Transmission Line 99 lattice towers, 12 steel poles, 6 cement poles 4 ERS towers, 1 portal and h-frame tower 117 116
Hermosa-Balintawak Transmission Line 13 lattice towers, 478 steel poles, 9 portal towers, 1 cement pole (whole line)
7 lattice towers, 397 steel poles, 9 portal towers, 1 cement pole (Duhat-Hermosa)
6 lattice towers, 81 steel poles (Balintawak-Duhat)
2 lattice towers, 14 steel poles (whole line)
2 lattice towers, 13 steel poles (Duhat-Hermosa)
1 steel pole (Balintawak-Duhat)
504 steel poles, 11 lattice towers, 13 portal towers, 1 h-frame tower (whole line)
424 steel poles, 5 lattice towers, 11 portal towers, 1 h-frame tower (Duhat-Hermosa)
80 steel poles (Balintawak-Duhat)
501 (whole line)
414 (Duhat-Hermosa)
87 (Balintawak-Duhat)
529 (whole line)
449 (Duhat-Hermosa)
80 (Balintawak-Duhat)
Hermosa-Limay Transmission Line 112 lattice towers, 3 steel poles 115
Limay-Hermosa Transmission Line 2 portal towers, 2 steel poles, 125 lattice towers 129
Limay-GNPower Transmission Line 48 lattice towers, 2 steel poles 50
Hermosa-San Jose Transmission Line 216 lattice towers, 2 steel poles, 1 portal tower 2 steel poles (uses original steel pole towers 381 and 382 of Hermosa-Balintawak transmission line) 6 ERS towers 219 225
Mexico-Balintawak Transmission Line 161 lattice towers, 2 monopole, 4 h-frame, 8 steel poles (whole line)
39 lattice towers, 2 monopole, 1 h-frame (Duhat-Balintawak)
122 lattice towers, 3 h-frame, 8 steel poles (Mexico-Duhat)
175 (whole line)
42 (Duhat-Balintawak)
133 (Mexico-Duhat)
171 (whole line)
41 (Duhat-Balintawak)
130 (Mexico-Duhat)
Hermosa-Olongapo Transmission Line 2 steel poles, 75 lattice towers 77 75
Bay-Biñan Transmission Line 194 steel poles, 45 lattice towers 46 lattice towers 239
Limay-PPDC Transmission Line 108 steel poles 108
SMC Power Plant-Limay Transmission Line 7 steel poles, 4 lattice towers 11
Limay-FAB Transmission Line 2 portal towers, 48 lattice towers, 1 wood pole 51
Orion-BNPP Transmission Line 80 lattice towers 80
Concepcion-Clark Transmission Line 185 steel poles, 20 lattice towers, 2 portal towers 207
Sucat-Araneta-Balintawak Transmission Line 210 steel poles, 29 lattice towers (whole line)
35 steel poles, 5 lattice towers (Araneta-Manila)
122 steel poles, 24 lattice towers (Manila-Muntinlupa)
52 steel poles (Balintawak-Araneta)
239 (whole line)
146 (Manila-Muntinlupa)
52 (Balintawak-Araneta)
40 (Araneta-Manila)
MSPP-Subic Transmission Line 35 steel poles, 13 lattice towers 48
Calaca-Laguna Technopark-Biñan Power Transmission Line 160 lattice towers, 1 steel pole 161
Ilijan-Alaminos Transmission Line 142 lattice towers 142
Alaminos-Dasmariñas Transmission Line 119 lattice towers 119
Alaminos-Tayabas Transmission Line 127 lattice towers 127
San Jose-Tayabas Transmission Line 261 lattice towers 261
San Manuel-Concepcion-Mexico Transmission Line 310 lattice towers, 1 steel pole (whole line)
213 lattice towers (San Manuel-Concepcion)
97 lattice towers, 1 steel pole (Concepcion-Mexico)

Number of towers that were painted with aluminum or zinc paint

This table shows the amount of structures that were painted with aluminum or zinc paint by NGCP to protect them from corrosion, especially if they now stand for more than 20 years.

Name of line Amount of structures Total
Hermosa-Balintawak Transmission Line 60 steel poles, 6 lattice towers, 1 portal tower (whole line)
60 steel poles, 6 lattice towers (Balintawak-Duhat)
1 portal tower (Duhat-Hermosa)
67 (whole line)
66 (Balintawak-Duhat)
1 (Duhat-Hermosa)
Mexico-Hermosa Transmission Line 32 lattice towers 32
Limay-Hermosa Transmission Line 61 lattice towers, 1 portal tower 62
Dasmariñas-Las Piñas Transmission Line 7 steel poles (#201-208)
Hermosa-Olongapo Transmission Line
Hermosa-Limay Transmission Line 73 lattice towers 73
Mexico-Balintawak Transmission Line

Number of retired structures

Name of line Amount of structures Total
Hermosa-Balintawak Transmission Line 104 steel poles, 4 portal towers, 1 h-frame 109
Mexico-Hermosa Transmission Line 19 lattice towers, 1 portal tower, 1 h-frame, 2 ERS towers 23
Hermosa-San Jose Transmission Line 22 lattice towers, 2 ERS towers, 2 chainette towers 26

Line references


  • 66WH-66XD - San Pedro-Pamplona

National Grid Corporation of the Philippines

  • 8L1BIN-DAS; 8L2BIN-DAS - Biñan-Dasmariñas Transmission Line
  • 8L1MUN-BIN; 8L2MUN-BIN; 8L3MUN-BIN; 8L4MUN-BIN - Biñan-Muntinlupa Transmission Line
  • 8L1CON-MEX; 8L2CON-MEX - San Manuel-Concepcion-Mexico Transmission Line (Concepcion-Mexico section)
  • 8L1MEX-HER; 8L2MEX-HER - Mexico-Hermosa Transmission Line
  • 8L1HER-QUE; HB - Hermosa-Balintawak Transmission Line
    • 8L1DUH-HER - Hermosa-Duhat Transmission Line
    • 8L1QUE-DUH - Balintawak-Duhat Transmission Line
    • RHB - refers to the 30 relocated steel poles (due to Lahar-Affected Relocation Project done by TransCo in early 2003) on Bacolor and San Fernando, Pampanga.
  • 8L1HER-LIM; 8L2HER-LIM - Hermosa-Limay Transmission Line
  • 8L1LIM-HER; 8L2LIM-HER - Limay-Hermosa Transmission Line
  • 8L1MEX-QUE - Mexico-Balintawak Transmission Line
    • 8L1MEX-DUH - Mexico-Duhat Transmission Line
    • 8L1DUH-QUE - Duhat-Balintawak Transmission Line
  • BTTP-SEMI - Limay-PPDC Park Transmission Line
  • 8L1LIM-LAM; 8L2LIM-LAM - SMC Power Plant-Limay Transmission Line
  • 8L1CON-CLK; 8L2CON-CLK - Concepcion-Clark Transmission Line
  • SA - Sucat-Araneta-Balintawak Transmission Line
    • 8L1MNA-MUN - Manila-Muntinlupa Transmission Line
  • 8L1SRF-QUE - San Rafael-Balintawak Transmission Line
  • 8L1HER-KSY-SBM; 8L2HER-KSY-SBM - Hermosa-SBMA Transmission Line
  • 8L1BAY-LUM; 8L2BAY-LUM - Bay-Lumban Transmission Line

Abbreviation of substations

National Grid Corporation of the Philippines

  • CON - Concepcion Substation
  • CAB - Cabanatuan Substation
  • MEX - Mexico Substaion
  • SRF - San Rafael Substation
  • LIM - Limay Substation/Bataan Thermal Power Plant
  • HER - Hermosa Substation
  • MUN - Muntinlupa Substation
  • BIN - Biñan Substation
  • LAM - Lamao Substation/SMC Consolidated Power Plant
  • SBM - Subic Substation
  • BAY - Bay Substation
  • LUM - Lumban Substation


Wholly owned

  • DUH - Duhat Substation
  • RF - Tegen Substation
  • GG - Gardner Substation
  • WR - Ayala Alabang Substation
  • FIL - Filinvest Substation
  • XO - Canlubang Substation
  • WH - San Pedro Substation
  • WK - Imus Substation
  • ZV - Bolbok Substation
  • SG - Batangas City Substation
  • MNA - Manila (Paco) Substation

Shared with NGCP

  • QUE/BAL - Balintawak (Quezon) Substation
  • LP - Las Piñas Substation
  • DAS - Dasmariñas Substation

Other distribution companies

  • CLK - Clark Substation

Mapped transmission and subtransmission lines constructed by each companies

Legend (on Exceptions section of each line):
TC - part of a transmission project done by TransCo
NG - part of a transmission project done by NGCP
Meralco - part of Meralco's subtransmission system
BATELEC-2 - part of subtransmission line by Batangas II Electric Cooperative
IEEE - part owned by Ibaan Electric and Engineering Corporation

National Power Corporation (NAPOCOR)

69 kV

  • Bay - Santo Tomas - Tanauan - Lipa 69 kV Line (wood pole, most sections transferred to BATELEC-II)
    • Exceptions:
      • Tap to CDO plant in Malvar (BATELEC-II)
      • Tanauan - LIMA and Lipa - Santo Toribio section (BATELEC-II, from 2011)
  • LIMA - Lipa 69 kV Line (wood pole, most sections transferred to LIMA Enerzone)
    • Exceptions:
      • Replaced steel pole near BATELEC-II tap point at Santo Toribio (NG? or LIMA?)
  • Batangas - Lipa 69 kV Lines 1 and 2 (Line 2 and Batangas-San Jose-Ingasco transferred to BATELEC-II)
    • Exceptions:
      • Line reconfiguration between Mahabang Parang and Bucal in Batangas City after construction of Batangas Substation (TC)
        • Transfer of Mahabang Parang - Bucal segment of Line 2 in Batangas City to Batangas - Ibaan - Rosario Tap - Rosario 69 kV Line after line configuration change
        • Transfer of Mahabang Parang - Bucal segment of Line 1 in Batangas City to Batangas - Lipa 69 kV Line 2
        • Transfer of Line 1 to roadside concrete poles between Mahabang Parang and Concepcion in Batangas City
      • 4 H-frames across STAR Tollway near Lipa City Exit (TC)
      • Tap to Nestlé Lipa plant (BATELEC-II)
      • Line reconfiguration between Mahabang Parang, Batangas City and Banaybanay 1, San Jose, Batangas (BATELEC-II, for Batangas Lipa Line 2; NGCP, for Batangas - Lipa Line 1, except tap to Nestlé Lipa by BATELEC-II, and Batangas - San Jose Tap - Ingasco)
        • Transfer of Line 2 to roadside steel poles between Mahabang Parang in Batangas City and Banaybanay 1 in San Jose (BATELEC-II)
        • Transfer of Line 1 between Mahabang Parang in Batangas City to Banaybanay 1 in San Jose (In front of Ingasco) to Batangas - San Jose Tap - Ingasco 69 kV line, and removal of connection with Line 2 in Banaybanay 1 (NG, for Line 1; BATELEC-II, for Batangas - San Jose Tap - Ingasco)
    • Replaced wood poles mostly along right of way or Philippine National Railways (PNR) Batangas Line (currently proposed for construction as the Calamba-Batangas Railway) (NG, for Line 1, using 18 meter steel poles with cross-arms; BATELEC-II, for Batangas - San Jose Tap - Ingasco, using 21 meter armless steel poles)
  • Batangas - Ibaan Tap - Rosario Tap- Rosario 69 kV Line (then Bucal Tap - Rosario Tap - Rosario 69 kV Line, tapped to Batangas - Lipa Line 2)
    • Exceptions:
      • H-frames across STAR Tollway in Malainin, Ibaan (TC)
      • Replacement of wood poles by steel poles on tap connection to Ibaan substation (IEEC)
      • Tap connection to Puyat Steel Ibaan plant and Taysan Substation (BATELEC-II)

115 kV

  • San Esteban - Bantay - Currimao - Laoag Transmission Line (lattice towers, except for steel pole in Laoag and H-frames at INEC Currimao)
    • Exceptions:
      • Relocated steel pole on Laoag Substation after construction of 230 kV switchyard (NG)
  • Dasmariñas - CEPZA 115 kV Line (wood pole)
    • Exceptions
      • Tap connection to Meralco Dasmariñas Substation (Meralco)
  • Biñan - Dasmariñas 115 kV line (wood pole; retired)
  • Dasmariñas - Silang - Tagaytay 115 kV Line (wood pole; transferred to Meralco from 2011)
    • Exceptions
      • Several wood poles, mostly along Aguinaldo Highway and 115/13.8 kV substation vicinities replaced by concrete or steel poles (Meralco)

230 kV

  • Hermosa-Balintawak Transmission Line
    • Duhat-Hermosa Transmission Line
      • Exceptions (as of March 2011):
        • Main line:
          • 30 steel poles on Guagua-San Fernando section of Olongapo-Gapan Road since early 2003 (TC; referenced as RHB-01 to RHB-30 instead of a standard tower number like the original 33 steel poles before the Lahar-Affected Transmission Line Relocation Project)
          • Steel poles 229, 230, 231, 232, 233, 237, 238, 241, 242, 244, 245, 246, 248, 249, 250, 251, 252, 253, 257, 258, 259, 260, 261, 262, 263, 264, 265, 268, 269, 270, 271, 272, 273, 274, 275, 277, 278, 279, 280, 282, 283, 285, 286, 287 and 288, and lattice towers 255 and 256 on NLEX San Simon-Pulilan section (NG; poles 228, 234, 235, 236, 239, 240, 243, 247, 254, 276, 281, 284, and 289, and lattice towers 266 and 267 are NAPOCOR-era or reused towers, with their old reference numbers were covered with paint, located behind, front, or right side of the pole or tower. When they were relocated at NLEX in 2011, they use their new reference numbers and disregarding the old one)
          • Current steel poles 381-383 on NLEX Balagtas segment (NG)
          • New steel poles at Olongapo-Gapan Road, City of San Fernando, Pampanga (NG; ongoing)
        • Separated from the main line:
          • Tap connection to Meralco Duhat Substation (Meralco)
    • Balintawak-Duhat Transmission Line
      • Exceptions:
        • Main line:
          • Current steel pole 474 near Dulalia Overpass (TC)
        • Separated from the main line:
          • Tap connection to Meralco Duhat Substation (Meralco; excluding the steel pole that is located along NLEX which reuses the original pole 127 of the main line)
  • Biñan-Muntinlupa Transmission Line
    • Exceptions:
      • Its line 4 and two steel poles located near SLEX and Skyway (NG)
  • San Manuel-Concepcion-Mexico Transmission Line (wood h-frame towers)
  • Mexico-Hermosa Transmission Line
    • Exceptions (as of 2015):
      • A three-level steel pole located between lattice towers 5 and 6 (NG)
      • 19 lattice towers on its Bacolor-Guagua section since early 2003 (TC)
  • Hermosa-Limay Transmission Line
  • Limay-Hermosa Transmission Line
    • Exceptions (as of 2012):
      • 2 steel poles located in Limay Substation (NG)
  • Hermosa-San Jose Transmission Line
    • Exceptions (as of April 2003):
      • 23 lattice towers on its Guagua-San Fernando section since early 2003 (TC)
  • Mexico-Balintawak Transmission Line
    • Mexico-Duhat Transmission Line
      • Exceptions:
        • 3 h-frame towers located near Philippine Arena (NG)
    • Duhat-Balintawak Transmission Line
      • Exceptions:
        • 1 h-frame tower in Meycauayan, Bulacan (NG)
  • Hermosa-Olongapo Transmission Line
    • Exceptions:
      • 2 steel poles near SCTEX (TC)
  • San Jose del Monte-Balintawak Transmission Line
  • Bay-Biñan Transmission Line (lattice towers from Biñan-Calamba; abandoned)
  • Limay-PPDC Transmission Line
  • Limay-FAB Transmission Line
  • Orion-BNPP Transmission Line
  • Sucat-Araneta-Balintawak Transmission Line
  • Calaca-Laguna Technopark-Biñan Power Transmission Line
  • Makban-Calauan-Kalayaan/Lumban-Calauan Transmission Line
  • Dasmariñas-Las Piñas Transmission Line
    • Exceptions (as of 2016)
      • Lattice tower (208A), formerly a water tower, connecting to 3rd 300 MVA transformer at Las Piñas Substation (NG)
  • Santiago - Tuguegarao Transmission Line (changed to Santiago - Gamu - Tuguegarao after cut-in to Gamu Substation)
    • Exceptions:
      • H-frame near provincial road in Ilagan (NG)

National Transmission Corporation

  • Bay (MakBan)-Batangas Transmission Line
  • Concepcion-Clark Transmission Line
  • San Manuel-Concepcion-Mexico Transmission Line (lattice towers)
  • Bay (MakBan)-Biñan Transmission Line (new steel poles from Biñan Substation to SLEX Calamba and lattice towers from Calamba to Bay Substation)
  • Biñan-Dasmariñas Transmission Line (lattice towers)

National Grid Corporation of the Philippines

115 kV

  • Caparispisan - Laoag Transmission Line (most sections designed for conversion to 230 kV double circuit as part of the proposed 230 kV loop in Northern Luzon)
  • Burgos - Laoag Transmission Line

230 kV

  • Subic-MSPP Transmission Line
  • Bay-Lumban Transmission Line
  • Limay-GNPower Transmission Line
  • Santiago - Tuguegarao Transmission Line (new)
  • Laoag - San Esteban Transmission Line
  • SMC Power Plant-Limay Transmission Line

500 kV

  • Mariveles-Hermosa Transmission Line (proposed)


115 kV

  • Duhat - Santa Maria
  • Lias - Santa Maria
  • San Pedro-Pamplona
  • Gardner - Filinvest - Ayala Alabang - Pamplona
  • Zapote - Bacoor - Pamplona
  • Imus - San Miguel Yamamura Tap - NGCP Dasmariñas
  • Dasmariñas Tap (connected to NGCP Dasmariñas - CEPZA 115 kV Line)

69 kV

  • Malolos - Baliuag
  • San Rafael - San Miguel
  • Calumpit - FBIC
  • NGCP Batangas - Batangas City (Line 1 and 2)
  • Batangas City - Bolbok Tap - JG Summit

===Batangas I Electric Cooperative (BATELEC-I)

  • Lemery Tap Line (tapped NGCP Calaca - Taal 69 kV Line)
  • Nasugbu Disconnector - Natipuan 69 kV Line

Not yet mapped

  • Natipuan - Pico de Loro Line (69 kV designed. Connection to Pico de Loro from last 69 kV pole at Ternate - Nasugbu Road currently designed at 13.2 kV)

Batangas II Electric Cooperative (BATELEC II)

  • Batangas - Lipa 69 kV Line 2 (Mahabang Parang, Batangas City to Banaybanay 1, San Jose)
  • Rosario Disconnector - Puyat Steel - Taysan 69 kV Line
  • Padre Garcia - B-Meg 69 kV Line
  • Batangas - Rosario - Padre Garcia Line (Rosario to Padre Garcia)
  • Padre Garcia Disconnector - San Juan 69 kV Line
  • Tanauan Disconnector - Canyon Woods 69 kV Line
  • Batangas - Mabini 69 kV Line (line on newer steel poles mostly along Route 4, Maharlika Avenue, and Bauan - Mabini Road)
  • Lipa - Santo Toribio 69 kV Line (ex-NGCP section of NAPOCOR-era Bay - Santo Tomas - Tanauan Tap - Lipa 69 kV Line between San Carlos and Santo Toribio in Lipa, and BATELEC II-built tap line along F. Leviste Highway)

Power stations/substations mapped

TODO: Add power stations/substations

National Grid Corporation of the Philippines

Ilocos Region

  • Laoag Substation (115/69-230 kV, power collection point from Bangui, Burgos, and Caparispisan wind farms)
  • Bantay Substation (115/69 kV)
  • San Esteban Substation (230/115/69 kV)
  • Bacnotan Substation (230/69 kV)
  • Bauang Substation (230/69 kV)
  • Kadampat Substation (500 kV step-up substation, collecting power from Sual and Masinloc Power plants)
  • Labrador Substation (230/69 kV)
  • San Manuel Substation (230/69 kV substation, with tie line with EHV substation)
  • San Manuel EHV Substation (230/500 kV step-up substation and 230/69 kV step-down substation, collecting most power from San Roque Hydroelectric Power Plant, and some power from Magat, Ambuklao, and Binga hydroelectric power plants.)
  • Santa Barbara Substation (230/69 kV, From 2016)

Cagayan Valley

  • Bayombong Substation
  • Santiago Substation
  • Gamu Substation
  • Tuguegarao Substation

Central Luzon

  • Concepcion Substation
  • Cabanatuan Substation
  • Mexico Substation
  • Hermosa Substation
  • Olongapo Substation
  • Botolan Substation
  • San Rafael Substation
  • San Jose Substation (500 kV step-down substation)
  • Limay Substation
  • Lamao Substation

Metro Manila

  • Araneta Substation
  • Muntinlupa Substation


  • Biñan Substation
  • Bay Substation
  • Lumban Substation
  • Calaca Substation (shared with Sem-Calaca Power)
  • Batangas Substation
  • Tayabas Substation (500 kV step-up substation, collects power from Pagbilao, Mauban, and Naga Converter Station)
  • Gumaca Substation


Wholly owned

  • Duhat Substation (230/115 kV)
  • Bocaue Substation (115/34.5 kV)
  • Malolos Substation (230/69 kV)
  • Santa Maria Substation (115/34.5 kV)
  • Meycauayan Substation (115/34.5 kV)
  • Lias Substation (115/34.5 kV)
  • Baliuag Substation (69/13.8 kV)
  • Cruz na Daan Substation (69/13.8 kV, inside NGCP San Rafael Substation)
  • FBIC Substation (69/13.8 kV)
  • Calumpit Substation (69/13.8 kV)
Metro Manila
  • Tegen Substation
  • Sampaloc Substation
  • Tutuban Substation (GIS)
  • Santa Cruz Substation
  • Ermita Substation (34.5/6.28 kV)
  • Malate Substation (34.5/6.28 kV)
  • Paco Substation (NGCP name: Manila Substation)
Quezon City
  • Diliman Substation
  • Kamuning Substation
  • Cubao Substation
Las Piñas
  • Zapote Substation (NGCP name: Las Piñas Substation)
  • Las Piñas Substation (34.5 kV switching station, formerly 34.5/6.28 step-down substation)
  • Pamplona Substation
  • Gardner Substation
  • Ayala Alabang Substation (GIS)
  • Filinvest Substation (GIS)
  • San Pedro Substation (115/34.5 kV)
  • Balibago Substation (115/34.5 kV)
  • Asia Brewery Substation (industrial only)
  • LIIP Substation (115/34.5 kV)
  • Laguna Technopark Substation (230/115 kV step-down and 115/34.5 kV industrial)
  • Laguna Bel-air Substation (115/34.5 kV)
  • LISP 1 Substation (115/34.5 kV, industrial only)
  • Canlubang Substation (115/34.5 kV)
  • LISP 2 Substation (115/34.5 kV, industrial only)
  • CPIP Substation (115/34.5 kV)
  • CIP2 Substation (115/13.8 kV, industrial only)
  • Los Baños Substation (115/13.8 kV)
  • Dila Substation (115/34.5 kV)
  • Calauan Substation (230 kV step-down)
  • Santa Cruz Substation (69-34.5/13.8 kV)
  • San Pablo Substation (115/34.5 kV)
  • San Pablo Substation (34.5/6.28 kV, all feeders retired or converted to 34.5 kV)
  • Bacoor Substation (115/34.5 kV)
  • Imus Substation (115/34.5 kV)
  • Dasmariñas Substation (115-34.5/13.8 kV)
  • NGCP Dasmariñas Substation (115/34.5 kV)
  • FCIE Substation (115/34.5 kV)
  • Silang Substation (115/13.8 kV)
  • Tagaytay Substation (115/13.8 kV)
  • Tagaytay West Substation (115/13.8 kV)
  • Amadeo Substation (230/115 kV)
  • FPIP Substation (industrial, 115/34.5 kV)
  • Bolbok Substation (69/13.8 kV)
  • Batangas City Substation (69/13.8 kV)

Shared with NGCP

  • Balintawak Substation (NGCP name: Quezon Substation)
  • Taytay Substation (NGCP name: Dolores Substation)
  • Dasmariñas Substation (500 kV step-down substation)
  • Las Piñas Substation

Ilocos Sur Electric Cooperative (ISECO)

  • Narvacan Substation

Cagayan I Electric Cooperative (CAGELCO-I)

  • Alcala Substation

Isabela I Electric Cooperative

  • Alicia Substation

Tarlac 1 Electric Cooperative

  • Gerona Substation

Pampanga 2 Electric Cooperative (PELCO-I)

  • Guagua Substation

Peninsula Electric Cooperative (PENELCO)

  • Orion Substation

Batangas I Electric Cooperative (BATELEC-I)

  • Lemery Substation
  • Calaca Substation (inside BATELEC-I main office grounds)
  • Balayan Substation
  • Nasugbu Substation
  • Natipuan Substation

To be mapped

  • Calatagan Substation
  • Taal Substation

Batangas II Electric Cooperative (BATELEC-II)

  • San Jose Substation (20 MVA)
  • Santo Toribio Substation (20 MVA)
  • Malvar Substation (15 MVA)
  • San Juan Substation
  • Cuenca Substation (15 MVA)
  • Lipa Substation (40 MVA)

Not yet mapped

  • Taysan Substation
  • Padre Garcia Substation
  • Rosario Substation

Other distribution companies

  • Currimao Substation (Ilocos Norte Electric Cooperative/INEC-owned)
  • Clark Substation (owned by Clark Electric Distribution Company)


  • Total amount of existing (abandoned or in use) mapped structures: 3,842
    • Lattice towers: 2,446
    • Steel poles: 1,432
    • Portal towers: 42
    • H-frame: 7
    • Monopole: 2
    • Cement poles: 7
    • Wood poles: 1
  • Mapped substations: 39
    • NGCP: 30
    • Meralco:
      • 230/115 kV: 6
      • 230/69 kV: 1
      • 115/34.5 kV: 31
      • 115/13.8 kV:
      • 115-34.5/13.8 kV:
      • 69/13.8 kV: 7
      • 69-34.5/13.8 kV: 7
      • 34.5/6.28 kV: 3 (remaining); 4 (retired or converted to switching station or VR facility)
    • ISECO: 1
    • LUECO: 1
    • CAGELCO-I: 1
    • ISELCO-I: 1
    • TARELCO-I: 1
    • PELCO II: 1
    • SFELAPCO: 1
    • BATELEC-I: 3
    • BATELEC-II: 5
    • IEEE: 1
    • VECO: 1
    • Davao Light: 2
    • Other distribution companies: 2
  • Amount of retired mapped structures: 158
    • Lattice towers: 41
    • Steel poles: 104
    • Portal towers: 5
    • H-frame: 2
    • ERS towers: 4
    • Chainette towers: 2
  • Amount of painted towers: 233
  • Amount of reused structures: 18
  • Mapped power lines: 38
    • NGCP: 30
    • Meralco: 1
    • BATELEC-I: 2
    • BATELEC-II: 5 (including lines or line sections divested from NGCP in 2011)
    • LIMA Enerzone (LIMA Utilities) : 1 (all from NGCP, originally constructed by NAPOCOR)