Hydro power plant in Central Luzon, Philippines. Approximate location 15.8107, 121.109.
HydroCentral LuzonPhilippinesconventional storage
PANTABANGAN-MASIWAY is a 132 MW hydro power station in Central Luzon, Philippines. It is operated by First Gen Hydro Power Corporation. Based on its capacity (estimated), it can supply roughly 132k homes (estimated). It ranks #84 of 186 Philippines power plants by installed capacity. Commissioned in 1977, it is around 49 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 10.3% of Philippines's electricity; the national grid averages 588 gCO₂/kWh (23.3% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1001901.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.
capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel
At 132 MW, PANTABANGAN-MASIWAY is below the median hydro plant in Philippines (150 MW). Technically it is described as conventional storage. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by First Gen Hydro Power Corporation.
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a tropical rainforest climate (Köppen Af) — Northern Hemisphere, latitude 15.8°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
This site has effectively no heating season (tropical/equatorial climate), so winter heat loss is not the driver here. The thermal concern shifts to year-round process heat and humidity/heat-driven corrosion of hot equipment.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
The #11 largest hydro power plant of 17 in Philippines by capacity.
Philippines has 17 hydro power plants in this dataset, together about 3,412 MW of capacity.
Coordinates 15.8107, 121.109 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
PANTABANGAN-MASIWAY is a 132 MW source-record hydro power plant in Central Luzon, Philippines, commissioned in 1977.
Its output is enough to supply roughly 132,150 homes (estimated).
PANTABANGAN-MASIWAY is operated by First Gen Hydro Power Corporation.
