Kuala Tanjung Inalum captive power station is a 950 MW coal power station in North Sumatra, Indonesia. It is operated by PT Bukit Asam Tbk [100%]. Based on its capacity (estimated), it can supply roughly 1.2 million homes (estimated). It ranks #42 of 401 Indonesia power plants by installed capacity. Commissioned in 2023, it is around 3 years old — recently built. In context, coal supplies about 61.5% of Indonesia's electricity; the national grid averages 680 gCO₂/kWh (18.1% low-carbon) (2024).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_coa_kualatanjunginalumca_indon.
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
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: GEM GCPT; fuel: GEM GCPT
In context: how this plant compares
At 950 MW, Kuala Tanjung Inalum captive power station is well above the median coal plant in Indonesia (220 MW). 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 Indonesia coal capacity
- 0.9% of 101,995 MW across 191 plants in this dataset
- Age among peers
- 83 of 122 dated coal plants in Indonesia 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 Indonesia
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by PT Bukit Asam Tbk [100%].
Climate zone & how it works
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 3.4°N — which shapes how much energy it can produce and how its output varies through the year.
Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
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 #28 largest coal power plant of 191 in Indonesia by capacity.
Indonesia has 191 coal power plants in this dataset, together about 101,995 MW of capacity.
Nearby power plants
- Kuala Tanjung-2 power station · Coal · 450 MW ·
- Lamhotma power station · Coal · 200 MW ·
- Kuala Tanjung-1 power station · Coal · 270 MW · North Sumatra
- Batubara power station · Gas · 4,800 MW · North Sumatra
- Tangga (asahan II) · Hydro · 317 MW · North Sumatra
- PLTG Belawan · Gas · 260 MW · North Sumatra
Location
Coordinates 3.3506353, 99.4513321 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Kuala Tanjung Inalum captive power station?
Kuala Tanjung Inalum captive power station is a 950 MW coal power plant in North Sumatra, Indonesia, commissioned in 2023.
Who operates Kuala Tanjung Inalum captive power station?
Kuala Tanjung Inalum captive power station is operated by PT Bukit Asam Tbk [100%].