Browse the atlas
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
Sri Lanka · electricity network
Sri Lanka power grid
OverWatts maps 969 km of Sri Lanka's electricity transmission network across 53 line segments and 0 substations, the 112th most-mapped grid of 153 countries. Its backbone is high voltage (220–379 kV), carrying 969 km — 100% of the mapped length, with the highest tagged voltage at 220 kV. That works out to 14.8 km per 1,000 km² of land — moderate OpenStreetMap coverage, ahead of 48% of mapped countries. No cross-border capacity is recorded today; 500 MW is planned.
OpenStreetMap coverage
This grades how completely OpenStreetMap has drawn Sri Lanka'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. 2% of segments carry a real line name and 53% an operator tag.
Mapped line length by voltage
- 220–379 kV969 km 100%
53 segments · a segment is credited to the country containing its midpoint, so a border-crossing line counts once, on one side.
Cross-border links from Sri Lanka
- India500 MW · planned
0 MW existing · 500 MW planned · capacities from the Global Transmission Database v0.1 (CC BY 4.0), existing as of 2023
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 Sri Lanka's network
- Ceylon Electricity Board27 96%
- short=CEB1 4%
Segment counts from OSM `operator` tags, merged across spellings. Present on 53% of segments — this ranks who is recorded, not market share.
How Sri Lanka compares · mapped grid by country
- 1. People's Republic of China624,300 km
- 110. Cameroon1,011 km
- 111. Republic of the Congo1,007 km
- 112. Sri Lanka969 km
- 113. Honduras882 km
- 114. Uganda880 km
Frequently asked
- How big is Sri Lanka's transmission network?
- OverWatts maps 969 km of transmission line in Sri Lanka, across 53 segments, plus 0 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 Sri Lanka's grid?
- Most of the mapped network is high voltage (220–379 kV): 969 km of 969 km. The highest voltage tagged anywhere in the country is 220 kV.
- How complete is the grid map for Sri Lanka?
- Moderate — 14.8 km of mapped line per 1,000 km² of land, ahead of 48% 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 Sri Lanka?
- Ceylon Electricity Board, short=CEB are tagged as operators on mapped segments. Operator tags are present on 53% of Sri Lanka's segments, so this ranks who is *recorded*, not market share.
- What interconnectors connect Sri Lanka to its neighbours?
- None recorded as operating. 500 MW is planned across 1 pathway.
Elsewhere in Sri Lanka
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.