Sohar Power


Operational Highlights


The capacity of a plant is defined as the total electrical power (in MW) and water (in m3/day), which can be delivered by the plant under specific environmental conditions (Reference Site Conditions). The contractual capacity of Sohar plant is 585 MW and 6,250 m3/hr, constant over the 15 years period of the PWPA.

Results of the Performance Test conducted at the end of Contract Year (CY) 8 to establish capacities for CY 9 was lesser than the guaranteed, as shown in the following graphs.  This was caused by the partial unavailability of the plant caused by the incident dated 19 march 2015. After undertaking required repair activities, an Additional Performance Test was performed in July 2015, which demonstrated capacities above guaranteed numbers.   


Availability is the amount of time the plant is technically capable of generating power and water as per specifications. Under the PWPA, Sohar plant shall be available for 100% of time in summer period; and 85% of the time for power and 87% of the time for water in the winter period. Forced Outages of 1.5% and 2% for power plant and the water plant respectively have been assumed in the Company budget.

The total power made available during 2015 was 4,288.5 GWh which works to an availability of 84.1%.  The total water made available during 2015 was 47,992,623 m3 which works to an availability of 88.1%.




The reliability of the plant is the ability of the plant to deliver the declared availability, as per PWPA. Any failure to deliver the declared capacity will be treated as forced outage.  The objective of Sohar Power is to minimize these forced outages, in order to maximize its revenues. During 2015 the plant showed reliability of 96.1% for power and 94.6% for water.


Plant Efficiency (Heat Rate)

The efficiency of the power plant is measured in terms of the amount of heat required to produce one unit of power.  The Contracted Heat Rate of the plant is 8,997 MJ/MWh for natural gas.


Utilization; Energy and Water Delivered

During the year 2015 the energy delivered was 3,345.7 GWh with a utilization factor of the power plant of 78%. The total water delivered by the water plant was 48,094,005 m3 with a utilization factor of almost 100%.

Evolution of statistics for power and water capacity made available by Sohar Power and amount delivered to the grid.


Annual maintenance of all equipment was undertaken during the year. 

Based on their fleet experience across the world, the Original Equipment Manufacturers (“OEM”) of major equipment notify their users on various improvements or issues to be addressed in order to improve efficiency, safety or mitigate risks identified in their equipment.  SPC along with its Operator is working on a few such recommendations.

SPC and its Operator have diligently studied and rectified during the year various causes for fuel inefficiency, which led to unnecessary drain on profitability.  This is an ongoing exercise and due attention is being given to this aspect.


Other productivity and efficiency improvements to existing equipment, systems and processes have been implemented during the year and some others are being analyzed, jointly with SOMC.


Force Majeure

1.       Over the years, due to extraneous factors affecting its performance, SPC has raised Force Majeure claims on OPWP. The following have been agreed between OPWP and SPC to constitute Force Majeure events:

Sl. No.      




Affected facility

Equivalent hours


Cyclone Gonu


June 6, 16:00 – June 7, 20:00

Entire Plant



Red Tide


a)   Jan 3, 19:00 – Jan 5, 10:00

b)   Jan 9, 00:00 – Jan 12, 19:00

Desalination Facility



Red Tide


a)   Apr 11, 06:30 – Apr 16, 06:30

Desalination Facility



2.       During the year Force Majeure claims have been raised by SPC to OPWP, on account of:


i)        Flood event (03 to 06 May and 19 May 2015)

ii)       OETC 220Kv Bus fault (29  September to 01 October 2015)


Both claims are being reviewed by OPWP.