PLTU Asam-asam 1 & 2 is a 260 MW coal power station in South Kalimantan, Indonesia. It is operated by PLN - South Kalimantan Regional Unit. Based on its capacity (estimated), it can supply roughly 325k homes (estimated). It ranks #142 of 401 Indonesia power plants by installed capacity. Commissioned in 2000, it is around 26 years old — long-established. 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 WRI1000910.
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 460 MW for Asam-Asam 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
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000102783; fuel: WRI GPPD
In context: how this plant compares
At 260 MW, PLTU Asam-asam 1 & 2 is well above the median coal plant in Indonesia (220 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 Indonesia coal capacity
- 0.3% of 101,995 MW across 191 plants in this dataset
- Age among peers
- 9 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 PLN - South Kalimantan Regional Unit.
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) — Southern Hemisphere, latitude 3.9°S — 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 #86 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
- Riam Kanan/pangeran Muhamad Nur · Hydro · 30 MW · South Kalimantan
- Kalimantan Cement Works power station · Coal · 55 MW ·
- Kalsel 1 power station · Gas · 100 MW · South Kalimantan
- Kalteng-1 Pulang Pisau power station · Coal · 120 MW · Central Kalimantan
Location
Coordinates -3.9253, 115.1043 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is PLTU Asam-asam 1 & 2?
PLTU Asam-asam 1 & 2 is a 260 MW coal power plant in South Kalimantan, Indonesia, commissioned in 2000.
Who operates PLTU Asam-asam 1 & 2?
PLTU Asam-asam 1 & 2 is operated by PLN - South Kalimantan Regional Unit.