JUAYMAH — Saudi Arabia

JUAYMAH is a 121.2 MW gas power station in Eastern Province, Saudi Arabia. It is operated by Saudi Electricity Company (SEC). Based on its capacity (estimated), it can supply roughly 137k homes (estimated). It ranks #125 of 156 Saudi Arabia power plants by installed capacity. Commissioned in 1976, it is around 50 years old — long-established. In context, gas supplies about 63.3% of Saudi Arabia's electricity; the national grid averages 692 gCO₂/kWh (2.2% low-carbon) (2024).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1030663.

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000409078; fuel: WRI GPPD

In context: how this plant compares

At 121.2 MW, JUAYMAH is below the median gas plant in Saudi Arabia (496.7 MW). Technically it is described as OCGT. 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 Saudi Arabia gas capacity

0.1% of 89,013 MW across 71 plants in this dataset

Age among peers

2 of 60 dated gas plants in Saudi Arabia 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 Saudi Arabia

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

Owner

Operated by Saudi Electricity Company (SEC). All plants by this company →

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 hot desert climate (Köppen BWh) — Northern Hemisphere, latitude 26.8°N — which shapes how much energy it can produce and how its output varies through the year.

Monthly mean temperature

Heating degree-days here run 95% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 16/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

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 #66 largest gas power plant of 71 in Saudi Arabia by capacity.

Saudi Arabia has 71 gas power plants in this dataset, together about 89,013 MW of capacity.

Nearby power plants

• JUAYMAH CO-GENERATION GAS PLANT · Gas · 496.7 MW · Eastern Province
• Ras Tanura Tihama power station · Gas · 150 MW · Eastern Province
• GHAZLAN · Gas · 4,256 MW · Eastern Province
• RAS TANURA CO-GENERATION PLANT · Gas · 153 MW · Eastern Province
• JUBAIL (SWCC) · Gas · 1,570 MW · Eastern Province
• MARAFIQ IWPP (1) · Gas · 2,744 MW · Eastern Province

Location

Coordinates 26.8, 50.006 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions