Oil power plant in Saint Catherine, Jamaica. Approximate location 17.9006, -77.1071.
OilSaint CatherineJamaicaCCGT · HRSG
Old Harbour is a 348 MW oil power station in Saint Catherine, Jamaica. It is operated by Jamaica Public Service Company. Based on its capacity (estimated), it can supply roughly 261k homes (estimated). It ranks #2 of 13 Jamaica power plants by installed capacity. Commissioned in 1994, it is around 32 years old — long-established. In context, oil supplies about 30.5% 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 WRI1023917.
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
Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Oil-fired plants burn heavy fuel oil or diesel, usually as peaking or backup capacity on islands and grids without gas pipelines; high fuel cost keeps their utilisation low.
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 Jamaica Public Service Company.
This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a tropical savanna climate (Köppen Aw) — Northern Hemisphere, latitude 17.9°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 an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion 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 #1 largest oil power plant of 4 in Jamaica by capacity.
Jamaica has 4 oil power plants in this dataset, together about 595 MW of capacity.
Coordinates 17.9006, -77.1071 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Old Harbour is a 348 MW source-record oil power plant in Saint Catherine, Jamaica, commissioned in 1994.
Its output is enough to supply roughly 260,922 homes (estimated).
Old Harbour is operated by Jamaica Public Service Company.
