Manjung power station is a 4,100 MW coal power station in Perak, Malaysia. It is operated by TNB Janamanjung Sdn Bhd. Based on its capacity (estimated), it can supply roughly 5.1 million homes (estimated). It ranks #1 of 82 Malaysia power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. In context, coal supplies about 44.6% of Malaysia's electricity; the national grid averages 602 gCO₂/kWh (20.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000255.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000103017; fuel: WRI GPPD
In context: how this plant compares
At 4,100 MW, Manjung power station is well above the median coal plant in Malaysia (1,400 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Malaysia coal capacity
- 21.8% of 18,844 MW across 12 plants in this dataset
- Age among peers
- 2 of 10 dated coal plants in Malaysia are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Malaysia
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by TNB Janamanjung Sdn Bhd.
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a tropical rainforest climate (Köppen Af) — Northern Hemisphere, latitude 4.2°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 #1 largest coal power plant of 12 in Malaysia by capacity.
Malaysia has 12 coal power plants in this dataset, together about 18,844 MW of capacity.
Nearby power plants
- Segari · Gas · 1,304 MW · Perak
- GB3 · Gas · 640 MW · Perak
- SG. Piah Lower · Hydro · 54 MW · Perak
- Kenering · Hydro · 120 MW · Perak
- Sultan Aziz power station · Coal · 2,164 MW · Perak
- Kapar Energy Ventures (KEV) · Gas · 2,420 MW · Perak
Location
Coordinates 4.1586, 100.6423 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Manjung power station?
Manjung power station is a 4,100 MW coal power plant in Perak, Malaysia, commissioned in 2009.
Who operates Manjung power station?
Manjung power station is operated by TNB Janamanjung Sdn Bhd.