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Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Philippines · electricity network
Philippines power grid
OverWatts maps 5,731 km of the Philippines's electricity transmission network across 1,039 line segments and 18 substations, the 51st most-mapped grid of 153 countries. Its backbone is high voltage (220–379 kV), carrying 4,782 km — 83% of the mapped length, with the highest tagged voltage at 500 kV. That works out to 19.5 km per 1,000 km² of land — moderate OpenStreetMap coverage, ahead of 54% of mapped countries.
OpenStreetMap coverage
This grades how completely OpenStreetMap has drawn the Philippines's network — not how much network exists. Large, sparsely-populated countries score low for geographic reasons alone, and every kilometre here is mapped length, so the totals are a floor rather than an operator-reported figure. 30% of segments carry a real line name and 83% an operator tag.
Mapped line length by voltage
- 380–764 kV880 km 15%
- 220–379 kV4,782 km 83%
- Voltage untagged69 km 1%
1,039 segments · a segment is credited to the country containing its midpoint, so a border-crossing line counts once, on one side.
On the interactive map
Load against the network
Where there is room to connect a new load depends on published hosting capacity, which most operators release only as their own map. OverWatts does not yet ingest those feeds, so these are the density measures the open data supports — generation and mapped demand against mapped network — not a headroom figure.
Operators tagged on the Philippines's network
- National Grid Corporation of the Philippines811 94%
- Meralco9 1%
- Southwest Luzon Power Generation Corporation7 1%
- GNPower Dinginin Ltd. Co.5 1%
- TEAM Energy4 0%
- AP Renewables, Inc.3 0%
- Korea Electric Power Company Philippines3 0%
- Santa Cruz Solar Energy Inc.3 0%
Segment counts from OSM `operator` tags, merged across spellings. Present on 83% of segments — this ranks who is recorded, not market share.
How the Philippines compares · mapped grid by country
- 1. People's Republic of China624,300 km
- 49. Iraq5,765 km
- 50. Democratic Republic of the Congo5,746 km
- 51. Philippines5,731 km
- 52. Namibia5,430 km
- 53. Tanzania5,410 km
Frequently asked
- How big is the Philippines's transmission network?
- OverWatts maps 5,731 km of transmission line in the Philippines, across 1,039 segments, plus 18 substations. This is mapped length from OpenStreetMap, not an operator-reported total — where OSM is incomplete the figure is a floor, never a ceiling.
- What voltage is the Philippines's grid?
- Most of the mapped network is high voltage (220–379 kV): 4,782 km of 5,731 km. The highest voltage tagged anywhere in the country is 500 kV.
- How complete is the grid map for the Philippines?
- Moderate — 19.5 km of mapped line per 1,000 km² of land, ahead of 54% of the 153 countries with any mapped grid. Coverage grades how completely OpenStreetMap has drawn the network, not how much network exists; large, sparsely-populated countries score low for geographic reasons alone.
- Who operates the grid in the Philippines?
- National Grid Corporation of the Philippines, Meralco, Southwest Luzon Power Generation Corporation and 5 others are tagged as operators on mapped segments. Operator tags are present on 83% of the Philippines's segments, so this ranks who is *recorded*, not market share.
Elsewhere in the Philippines
Network geometry: OpenStreetMap (ODbL) © OpenStreetMap contributors, ingested and measured by OverWatts · derived 2026-07-26. Counts every mapped line of 220 kV and above; the map layer draws the ≥380 kV backbone only, so it shows less than is measured here.