Weda Bay power station — Indonesia

Weda Bay power station is a 4,540 MW coal power station in North Maluku, Indonesia. It is operated by PT Weda Bay Energi [100%]. Based on its capacity (estimated), it can supply roughly 5.7 million homes (estimated). It ranks #3 of 401 Indonesia power plants by installed capacity. Commissioned in 2020, it is around 6 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_wedabay_indon.

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000104613; fuel: GEM GCPT

In context: how this plant compares

At 4,540 MW, Weda Bay power station is well above the median coal plant in Indonesia (220 MW). Technically it is described as supercritical. 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

4.5% of 101,995 MW across 191 plants in this dataset

Age among peers

66 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 Weda Bay Energi [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 0.5°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 #2 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

• East Halmahera power station · Coal · 830 MW · North Maluku
• Haltim power station · Coal · 200 MW · North Maluku
• Kayu Merah - Ternate · Oil · 21.1 MW · Maluku Utara

Location

Coordinates 0.478894, 127.984206 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions