Jiguey 1 — Dominican Republic

Jiguey 1 is a 49.5 MW hydro power plant in San Cristobal, Dominican Republic. It is operated by EGEHID. Based on its capacity (estimated), it can supply roughly 50k homes (estimated). It ranks #28 of 30 Dominican Republic power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 6.7% of Dominican Republic's electricity; the national grid averages 537 gCO₂/kWh (23.8% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1023731.

Data provenance

Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.

capacity: WRI GPPD; fuel: WRI GPPD

In context: how this plant compares

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.

Key facts

Share of Dominican Republic hydro capacity

21.8% of 227 MW across 3 plants in this dataset

Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).

Capacity vs largest hydro plants in Dominican Republic

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

Owner

Operated by EGEHID.

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) — Northern Hemisphere, latitude 18.5°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.

Site climate & environmental severity

This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.

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.

How it compares & nearby plants

The #3 largest hydro power plant of 3 in Dominican Republic by capacity.

Dominican Republic has 3 hydro power plants in this dataset, together about 227 MW of capacity.

Nearby power plants

• Punta Catalina power station · Coal · 752 MW · Peravia
• Palamara power station · Oil · 107 MW · Santo Domingo
• Haina TG · Oil · 184.9 MW · San Cristobal
• Itabo power station · Coal · 260 MW · San Cristobal
• Falcondo mine power station · Oil · 198 MW · Monseñor Nouel
• Metaldom · Oil · 42 MW · Nacional

Location

Coordinates 18.5464, -70.3772 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions