Manah is a 254 MW gas power station in Muhafazat ad Dakhiliyah, Oman. It is operated by Nama Holding SAOC [100%]. Based on its capacity (estimated), it can supply roughly 286k homes (estimated). It ranks #21 of 32 Oman power plants by installed capacity. Commissioned in 1997, it is around 29 years old — long-established. In context, gas supplies about 91.9% of Oman's electricity; the national grid averages 544 gCO₂/kWh (4.5% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1023721.
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 180 MW for Manah power plant, 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: Wikidata P2109; fuel: WRI GPPD
In context: how this plant compares
At 254 MW, Manah is below the median gas plant in Oman (445 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 Oman gas capacity
- 1.8% of 14,120 MW across 26 plants in this dataset
- Age among peers
- 3 of 26 dated gas plants in Oman 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 Oman
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Nama Holding SAOC [100%].
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 22.7°N — 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 ~9% 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 a benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with dust abrasion 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 #19 largest gas power plant of 26 in Oman by capacity.
Oman has 26 gas power plants in this dataset, together about 14,120 MW of capacity.
Nearby power plants
- Rusail · Gas · 684 MW · Muhafazat Masqat
- SMN Barka · Gas · 688 MW · Al Batinah
- ACWA Barka · Gas · 456 MW · Al Batinah
- Misfah Independent power plant · Gas · 1,600 MW · Muscat
- AL GHUBRAH · Gas · 480 MW · Muhafazat Masqat
- Mina Al Fahal · Solar · 4.4 MW · Muhafazat Masqat
Location
Coordinates 22.7067, 57.5779 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Manah?
Manah is a 254 MW gas power plant in Muhafazat ad Dakhiliyah, Oman, commissioned in 1997.
Who operates Manah?
Manah is operated by Nama Holding SAOC [100%].