Hydro power plant in Saint Ann, Jamaica. Approximate location 18.4122, -77.0696.
HydroSaint AnnJamaica
Lower White River is a 5 MW hydro power plant in Saint Ann, Jamaica. It is operated by Jamaica Public Service Company. Based on its capacity (estimated), it can supply roughly 4,805 homes (estimated). It ranks #9 of 10 Jamaica power plants by installed capacity. Commissioned in 1952, it is around 74 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 2.4% of Jamaica's electricity; the national grid averages 563 gCO₂/kWh (12.6% low-carbon) (2024).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1023925.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Jamaica Public Service Company. All plants by this company →
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a tropical savanna climate (Köppen Aw) — Northern Hemisphere, latitude 18.4°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
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.
The #2 largest hydro power plant of 3 in Jamaica by capacity.
Jamaica has 3 hydro power plants in this dataset, together about 15 MW of capacity.
Coordinates 18.4122, -77.0696 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
