Ruzizi I

Hydro power plant in Western Province, Democratic Republic of the Congo. Approximate location -2.6334, 28.9027.

HydroWestern ProvinceDemocratic Republic of the Congo

Ruzizi I is a 81 MW hydro power plant in Western Province, Democratic Republic of the Congo. It is operated by Societe Nationale D'elec. Based on its capacity (estimated), it can supply roughly 81k homes (estimated). It ranks #6 of 15 Democratic Republic of the Congo power plants by installed capacity. Commissioned in 1958, it is around 68 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 84.2% of Democratic Republic of the Congo's electricity; the national grid averages 28 gCO₂/kWh (100.0% low-carbon) (2024).

81Legacy source-record capacity
81,092homes powered (est.)
1958commissioned (~68 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000009.

Data status

Known data

FacilityRuzizi I WRI
CountryDemocratic Republic of the Congo · Western Province WRI
Coordinates-2.6334, 28.9027 WRI
FuelHydro WRI
MW installed capacity81 MW WRI source record; scope not independently normalised
OwnerSociete Nationale D'elec WRI
Commissioned1958 WRI

Calculated from dataset

Capacity rank in country#6 of 15 calculated
Fuel-specific rank in country#6 of 13 calculated
Capacity vs country/fuel peers1.08× · 75 MW median · 13 peers calculated
Homes-powered equivalent81,092 calculated
Climate20.0°C · HDD 0 derived from coordinates
Environmental severityC3 · 30/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset
CO₂ emissionsnot applicable not applicable

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Capacity provenance

The public capacity above is the current source-record value. A 2026 tracker candidate lists 36 MW for Ruzizi II hydroelectric plant, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).

Capacity claim grade: D_REJECT_KEEP_MASTER - recommended action: keep_master - confidence: rejected_candidate. This follows a claim-based data model: value + scope + source + confidence, rather than silently overwriting records.

Data provenance

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

In context: how this plant compares

At 81 MW, Ruzizi I is around the median hydro plant in Democratic Republic of the Congo (75 MW). 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.

Capacity vs largest hydro plants in Democratic Republic of the Congo

Inga II: 1,424 MW1kInga IINseke: 260 MW260NsekeNzilo: 228 MW228NziloZongo II: 150 MW150Zongo IIImboulou: 120 MW120ImboulouRuzizi I: 81 MW81Ruzizi IZongo 1: 75 MW75Zongo 1Moukoukoulou: 74 MW74Moukoukoul…

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

Owner

Operated by Societe Nationale D'elec.

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a subtropical highland climate (Köppen Cwb) — Southern Hemisphere, latitude 2.6°S — which shapes how much energy it can produce and how its output varies through the year.

20.0°Cannual mean temp
0heating degree-days (base 18°C)
733cooling degree-days (base 18°C)
1,474 melevation

Monthly mean temperature

J: 20 °CJF: 20 °CFM: 20 °CMA: 20 °CAM: 20 °CMJ: 20 °CJJ: 20 °CJA: 20 °CAS: 21 °CSO: 20 °CON: 20 °CND: 20 °CD21 °C

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

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 a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with heat / UV the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
30/100environmental-severity index
1.4°Cseasonal temperature swing
331 kmdistance to coast

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.

How it compares & nearby plants

The #6 largest hydro power plant of 13 in Democratic Republic of the Congo by capacity.

Democratic Republic of the Congo has 13 hydro power plants in this dataset, together about 2,668 MW of capacity.

Nearby power plants

Location

Coordinates -2.6334, 28.9027 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Ruzizi I?

Ruzizi I is a 81 MW source-record hydro power plant in Western Province, Democratic Republic of the Congo, commissioned in 1958.

How many homes can Ruzizi I power?

Its output is enough to supply roughly 81,092 homes (estimated).

Who operates Ruzizi I?

Ruzizi I is operated by Societe Nationale D'elec.

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