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 and/or operated by the National Grid Corporation of the Philippines, while power generating sites are owned by various companies. 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.




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.


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.
13200 Standard three-phase distribution line voltage by many electric cooperatives. 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.
34500 Standard distribution voltage used by Meralco *Can be either two-phase or three-phase
  • Usually overhead power lines, but may be an underground or overhead cable.
  • Almost roadside
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 in Cagayan Valley) 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 line near Metro Manila 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.


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


Name of Transmission Line Link to relation Originating Point Terminating point Voltage, circuits, and bundling Notes/status Components
Biñan-Dasmariñas Transmission Line 1524350 (x i j p h a m r) Biñan Substation Dasmariñas Substation 230 kV, double-circuit, quadruple-bundle 44 lattice towers
Biñan-Sucat Transmission Line 1524351 (x i j p h a m r) Sucat Power Station Biñan Substation 230 kV, double-circuit, double-bundle Former 115 kV line. Now connected to Muntinlupa Substation.
MakBan-Calauan-Kalayaan Transmission Line 1407254 (x i j p h a m r) Makban Geothermal Power Plant Kalayaan Hydroelectric Power Plant 230 kV, single-circuit, unbundled Now Lumban - Calauan Transmission Line (after energization of the new parallel Bay - Lumban Transmission Line)
Alaminos-Tayabas Transmission Line 2405491 (x i j p h a m r) Alaminos Tayabas Substation 500 kV, double-circuit, quadruple-bundle
Alaminos-Dasmariñas Transmission Line 2405524 (x i j p h a m r) Dasmariñas Substation Alaminos 500 kV, double-circuit, quadruple-bundle
Ilijan-Alaminos Transmission Line 2405751 (x i j p h a m r) Ilijan Power Plant Alaminos 500 kV, double-circuit, quadruple-bundle
MakBan-Batangas Transmission Line 1407227 (x i j p h a m r) Makban Geothermal Power Plant Batangas Power Substation 230 kV, double-circuit, quadruple-bundle Renamed Bay - Batangas Transmission Line
San Jose-Tayabas Transmission Line 2442269 (x i j p h a m r) Tayabas Power Substation San Jose del Monte Power Substation 500 kV, double-circuit, quadruple-bundle Now complete. Long gap at Tanay and Santa Maria filled up
San Manuel-Concepcion-Mexico Transmission Line 1447951 (x i j p h a m r) San Manuel Substation Mexico Substation 230 kV, double-circuit, double-bundle Former single-circuit line on wood H-frame towers.
Mexico-Hermosa Transmission Line 1459152 (x i j p h a m r) Mexico Substation Hermosa Substation 230 kV, double-circuit, unbundled 99 lattice towers, 12 steel poles
Hermosa-Balintawak Transmission Line 6966521 (x i j p h a m r) Hermosa Substation Balintawak Substation 230 kV, single-circuit, double-bundle Has cut-in connection with Meralco Duhat Substation (formerly direct tap connection) 13 lattice towers, 475 steel poles, 9 portal towers
Hermosa-Limay Transmission Line 6756605 (x i j p h a m r) Hermosa Substation Limay Substation 230 kV, double-circuit, unbundled 112 lattice towers, 3 steel poles
Limay-Hermosa Transmission Line 156802419 (x i j p h) Limay Substation Hermosa Substation 230 kV, double-circuit, double-bundle 2 portal towers, 3 steel poles, 125 lattice towers
Limay-GNPower Transmission Line 250027678 (x i j p h) Limay Substation GNPower Mariveles Coal Power Plant 230 kV, double-circuit, quadruple-bundle 48 lattice towers, 2 steel poles
Hermosa-San Jose Transmission Line 6817263 (x i j p h a m r) Hermosa Substation San Jose del Monte Power Substation 230 kV, double-circuit, double-bundle 216 lattice towers, 2 steel poles, 1 portal tower
Mexico-Balintawak Transmission Line 6908495 (x i j p h a m r) Mexico Substation Balintawak Substation 230 kV, double-circuit, unbundled 161 lattice towers
Hermosa-Olongapo Transmission Line 7012766 (x i j p h a m r) Hermosa Substation Olongapo Substation 230 kV, double-circuit, unbundled 2 steel poles, 77 lattice towers
San Jose del Monte-Balintawak Transmission Line 6678059 (x i j p h a m r) San Jose del Monte Power Substation Balintawak Substation 230 kV, double-circuit, unbundled
Bay-Biñan Transmission Line 6847442 (x i j p h a m r) Bay Substation Biñan Substation 230 kV, double-circuit, double-bundle (steel poles) and quadruple-bundle (lattice towers) 194 steel poles, 45 lattice towers
Limay-PPDC Transmission Line 7085142 (x i j p h a m r)
7085143 (x i j p h a m r)
Limay Substation PPDC Park 230 kV, double-circuit, unbundled 108 steel poles
SMC Power Plant-Limay Transmission Line 7085128 (x i j p h a m r)
7085127 (x i j p h a m r)
San Miguel Consolidated Power Plant Limay Substation 230 kV, double-circuit, quadruple-bundle 7 steel poles, 4 lattice towers
Limay-FAB Transmission Line 6903271 (x i j p h a m r) Limay Substation Barangay Malaya, FAB Compound 230 kV, double-circuit, unbundled 2 portal towers, 1 wooden pole, 48 lattice towers
Orion-BNPP Transmission Line 6824330 (x i j p h a m r) Hermosa-Limay Transmission Line, Calungusan, Orion, Bataan Bataan Nuclear Power Plant 230 kV, double-circuit, unbundled 80 lattice towers



Name of Transmission Line Link to relation Originating Point Terminating point
Bacolod-Kabankalan Transmission Line 1524342 (x i j p h a m r) Bacolod Substation Kabankalan Substation
Negros Geothermal - Bacolod Transmission Line Negros Geothermal Power Plant Bacolod Substation

Power stations/substations mapped

TODO: Add power stations/substations

National Grid Corporation of the Philippines

Ilocos Region

  • Laoag Substation (collects power from Bangui and Burgos wind farms)
  • Currimao Substation (Ilocos Norte Electric Cooperative/INEC-owned)
  • Bantay Substation
  • San Esteban Substation
  • Bacnotan Substation
  • Bauang Substation
  • Kadampat Substation (500 kV step-up substation, collecting power from Sual and Masinloc Power plants)
  • Labrador Substation
  • San Manuel Substation (two substations. One is 500 kV step-up substation, collecting most power from San Roque Hydroelectric Power Plant, and some power from Magat, Ambuklao, and Binga hydroelectric power plants.)

Central Luzon

  • Concepcion Substation
  • Clark Substation (shared with Clark Electric Distribution Company/CEDC)
  • Cabanatuan Substation
  • Mexico Substation
  • Hermosa Substation
  • Olongapo Substation
  • Botolan Substation
  • San Rafael Substation
  • Duhat Substation (Meralco-owned)
  • Malolos Substation (Meralco-owned)
  • San Jose Substation (500 kV step-down substation)
  • Limay Substation

Metro Manila

  • Balintawak Substation (Meralco-owned, and also named Quezon Substation)
  • Araneta Substation
  • Paco Substation (Meralco-owned)
  • Muntinlupa Substation
  • Las Piñas Substation (Meralco-owned, and also named Zapote Substation)


  • Taytay Substation (shared with Meralco, and also named Dolores Substation)
  • Biñan Substation
  • Laguna Technopark Substation (Meralco-owned)
  • Bay Substation
  • Calauan Substation (Meralco-owned)
  • Lumban Substation
  • Calaca Substation (shared with Sem-Calaca Power)
  • Batangas Substation
  • Dasmariñas Substation (500 kV step-down substation. Shared with Meralco)
  • Amadeo Substation (Meralco-owned)
  • Tayabas Substation (500 kV step-up substation, collects power from Pagbilao, Mauban, and Naga Converter Station)
  • Gumaca Substation