PLTG Krakatau Posco Energy — Indonesia

PLTG Krakatau Posco Energy is a 200 MW gas power station in Banten, Indonesia. It is operated by PT. Krakatau Posco Energy (JV : Korea Posco Energy (70%) + PT. Krakatau Daya Listrik (30%)). Based on its capacity (estimated), it can supply roughly 225k homes (estimated). It ranks #166 of 401 Indonesia power plants by installed capacity. Commissioned in 1978, it is around 48 years old — long-established. In context, gas supplies about 18.5% 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 WRI1000835.

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 200 MW, PLTG Krakatau Posco Energy is well above the median gas plant in Indonesia (150 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). 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 Indonesia gas capacity

0.4% of 44,657 MW across 138 plants in this dataset

Age among peers

0 of 99 dated gas 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 gas plants in Indonesia

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by PT. Krakatau Posco Energy (JV : Korea Posco Energy (70%) + PT. Krakatau Daya Listrik (30%)).

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 rainforest climate (Köppen Af) — Southern Hemisphere, latitude 6.0°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.

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 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 #55 largest gas power plant of 138 in Indonesia by capacity.

Indonesia has 138 gas power plants in this dataset, together about 44,657 MW of capacity.

Nearby power plants

• PLTGU Krakatau Daya Listrik (KDL) · Gas · 400 MW · Banten
• Cilegon PTIP Power Station · Coal · 40 MW · Banten
• Asahimas Chemical power station · Coal · 300 MW · Banten
• Bojonegara Serang power station · Coal · 750 MW · Banten
• Jawa-7 power station · Coal · 1,982 MW · Banten
• PLTU Suralaya · Coal · 3,400 MW · Banten

Location

Coordinates -6.0048, 105.9961 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions