Historical ownership mapping of the electricity value chain
A handful of groups dominate the power chain.
This historical explorer aggregates plants and utilities to the controlling groups coded in the supplied workbook. Five source-coded groups account for roughly seven in ten megawatts of installed capacity. A single distribution company delivers more than half the electricity sold in the source series.
Historical source coding · field vintages vary · not a current legal ownership record
Installed generating capacity, by source-coded controlling group
Coverage in supplied workbookGeneration · capacity snapshotDistribution sales · 2015 seriesConnections · circa 2018Do not read these as one common-year market snapshot.
01 / GENERATION
Who makes the megawatts
Every generating plant, aggregated to the source-coded group attributed control in the supplied workbook. Coal-heavy and
Luzon-heavy, the fleet is dominated by San Miguel, Aboitiz and Lopez — with the
government’s residual assets (PSALM) still a top-five holder.
Installed capacity ranking
Share of national installed MW
Fuel mix
Installed MW by primary source
Concentration HHI
02 / DISTRIBUTION
Who delivers it — and to whom
Distribution tells two stories at once. By energy sold, one utility —
MERALCO — moves more than half the country’s electricity. By customer connections,
electric cooperatives serve the most households. Toggle to see the split.
Distribution ranking
Share of energy sold (MWh)
By utility type
Share of energy sold
Concentration HHI
03 / RETAIL SUPPLY
Who sells to the open market
Retail electricity suppliers compete for large “contestable” customers.
The licences cluster around the very same names — Aboitiz and the MERALCO group each field
six suppliers, Ayala four.
Licensed retail suppliers, by source-coded controlling group
04 / VALUE CHAIN
The same names, end to end
The real story isn’t any single segment — it’s how the same groups
appear across all three. Each row is a source-coded controlling group; the bars show its footprint in generation,
distribution and retail side by side. Groups filling every column are vertically integrated across
the chain.
Source-coded group
Generation — share of MW
Distribution — share of MWh
Retail suppliers
of the largest groups operate in two or more
segments of the chain. ALL 3 marks full
generation–distribution–retail integration.
05 / THE DATA
Explore every plant
All generating plants in the dataset. Search by plant, owner, parent company or source-coded group; filter by
fuel or grid; click a column to sort.
Download the supplied ownership records. Plant records preserve the source-coded operator, parent company, controlling group, grid and contract field; summary records reproduce the displayed rankings.
Interpretation guardrail. The table reproduces the source workbook's historical labels. Corporate structures, operating arrangements and beneficial ownership may have changed; use this as a research explorer, not a current legal register.