Ok Menga

Hydro power plant in Papua, Papua New Guinea. Approximate location -5.2448, 141.1364.

HydroPapuaPapua New Guinea

Ok Menga is a 57 MW hydro power plant in Papua, Papua New Guinea. It is operated by OK Tedi Mining. Based on its capacity (estimated), it can supply roughly 57,065 homes (estimated). It ranks #3 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).

57MW installed capacity
57,065homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022431.

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 OK Tedi Mining. 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 5.2°S — which shapes how much energy it can produce and how its output varies through the year.

21.7°Cannual mean temp
0heating degree-days (base 18°C)
1,364cooling degree-days (base 18°C)
1,063 melevation

Monthly mean temperature

J: 22 °CJF: 22 °CFM: 22 °CMA: 22 °CAM: 22 °CMJ: 21 °CJJ: 21 °CJA: 21 °CAS: 21 °CSO: 22 °CON: 22 °CND: 22 °CD22 °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 #2 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 -5.2448, 141.1364 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Built from open public data; no personal information. Operate this site? Request a correction or removal.