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Lake Hargy

Hydro power plant in West New Britain, Papua New Guinea. Approximate location -5.3392, 151.1341.

HydroWest New BritainPapua New Guinea

Lake Hargy is a 2 MW hydro power plant in West New Britain, Papua New Guinea. It is operated by PNG Power Limited. Based on its capacity (estimated), it can supply roughly 1,501 homes (estimated). It ranks #14 of 15 Papua New Guinea power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 21.1% of Papua New Guinea's electricity; the national grid averages 514 gCO₂/kWh (23.7% low-carbon) (2024).

2MW installed capacity
1,501homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022421.

Capacity vs largest hydro plants in Papua New Guinea

Ramu: 75 MW75RamuOk Menga: 57 MW57Ok MengaYonki Toe of Dam: 18 MW18Yonki Toe …Pauanda: 12 MW12PauandaLake Hargy: 2 MW2Lake HargySirinumu Dam: 2 MW2Sirinumu D…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by PNG Power Limited. All plants by this company →

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a tropical rainforest climate (Köppen Af) — Southern Hemisphere, latitude 5.3°S — which shapes how much energy it can produce and how its output varies through the year.

18.9°Cannual mean temp
0heating degree-days (base 18°C)
319cooling degree-days (base 18°C)
1,580 melevation

Monthly mean temperature

J: 19 °CJF: 19 °CFM: 19 °CMA: 19 °CAM: 19 °CMJ: 19 °CJJ: 18 °CJA: 18 °CAS: 19 °CSO: 19 °CON: 19 °CND: 19 °CD19 °C

Heating degree-days here run 100% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 13/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

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.

How it compares & nearby plants

The #5 largest hydro power plant of 6 in Papua New Guinea by capacity.

Papua New Guinea has 6 hydro power plants in this dataset, together about 165 MW of capacity.

Nearby power plants

Location

Coordinates -5.3392, 151.1341 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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