Alaoji is a 1,074 MW gas power station in Abia, Nigeria. It is operated by Alaoji Generation Company Ltd [100%]. Based on its capacity (estimated), it can supply roughly 1.2 million homes (estimated). It ranks #11 of 69 Nigeria power plants by installed capacity. Commissioned in 2015, it is around 11 years old — relatively modern. In context, gas supplies about 68.7% of Nigeria's electricity; the national grid averages 456 gCO₂/kWh (31.3% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000030.
Data status
Known data
Calculated from dataset
Not available
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 496 MW for Alaoji power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
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
At 1,074 MW, Alaoji is well above the median gas plant in Nigeria (501 MW). Technically it is described as OCGT. Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Nigeria gas capacity
- 3.5% of 30,326 MW across 48 plants in this dataset
- Age among peers
- 12 of 36 dated gas plants in Nigeria are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest gas plants in Nigeria
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Alaoji Generation Company Ltd [100%].
Local climate & thermal context
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a tropical monsoon climate (Köppen Am) — Northern Hemisphere, latitude 5.1°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.
A gas turbine here also runs ~8% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).
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 a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness 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 #8 largest gas power plant of 48 in Nigeria by capacity.
Nigeria has 48 gas power plants in this dataset, together about 30,326 MW of capacity.
Nearby power plants
- Afam IV power station · Gas · 450 MW · Rivers
- Afam V power station · Gas · 276 MW · Rivers
- Afam VI power station · Gas · 650 MW · Rivers
- Afam (FIPL) power station · Gas · 360 MW · Rivers
- Ibom Power · Gas · 189 MW · Rivers
- Bonny Island LNG power plant · Gas · 180 MW · Rivers State
Location
Coordinates 5.067, 7.3216 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Alaoji?
Alaoji is a 1,074 MW gas power plant in Abia, Nigeria, commissioned in 2015.
Who operates Alaoji?
Alaoji is operated by Alaoji Generation Company Ltd [100%].