Oman Main Interconnected System spot market

Oman (Main Interconnected System). Status: operational.

Wholesale design: A half-hourly day-ahead spot market has operated in the MIS since 1 January 2022 alongside long-term power purchase agreements and the single-buyer procurement model.

Operator
Oman Electricity Market Operator; Nama Power and Water Procurement
Pricing granularity
single system
Settlement interval
30 minutes
Nominal frequency
50 Hz
What a battery can sell

What ancillary services can a battery sell in Oman Main Interconnected System spot market?

Oman Main Interconnected System spot market has 5 ancillary-service products, across 5 families — frequency containment, automatic frequency restoration, replacement reserve, reactive power & voltage and black start & restoration: Black Start, Primary Response, Reactive Power / Voltage Control, Secondary Response, Tertiary Reserve. Response timing, direction and eligibility for each are in the cards below, as the official sources state them.

Facts below are stated as the official sources state them. A missing line means the source does not state that value — never that the value is zero.

Frequency containment

  • Primary Response

    operational

    Automatically contain frequency deviations following an imbalance.

    Direction
    symmetric
    Full activation
    5 s
    Sustain
    Full by t=5 seconds and sustainable until at least t=30 seconds from the event; t=30 is an event-time endpoint, not an additional 30-second duration
    Trigger / range
    Frequency deviation; normal system frequency band is not treated as the product activation threshold.
    Eligibility
    Generating units and other facilities meeting Grid Code requirements.
    Typical procurement
    System-operator determined
    Pricing
    Grid Code and contract terms

Automatic frequency restoration

  • Secondary Response

    operational

    Restore frequency and replace primary response following an imbalance.

    Direction
    symmetric
    Full activation
    30 s
    Sustain
    Full by t=30 seconds and sustainable until t=30 minutes from the Grid Code event/activation origin; not additional 1,800-second duration
    Trigger / range
    System-control signal following frequency deviation.
    Eligibility
    Generating units and other facilities meeting Grid Code requirements.
    Typical procurement
    System-operator determined
    Pricing
    Grid Code and contract terms

Replacement reserve

  • Tertiary Reserve

    operational

    Replace secondary response and restore reserve capability.

    Direction
    up
    Full activation
    30 min
    Trigger / range
    System-operator instruction.
    Eligibility
    Synchronized, non-synchronized and demand-reduction resources meeting Grid Code requirements.
    Typical procurement
    System-operator determined
    Pricing
    Grid Code and contract terms

Reactive power & voltage

  • Reactive Power / Voltage Control

    operational

    Maintain system voltages using reactive-power capability and voltage control.

    Direction
    non-directional
    Stated response
    Equipment- and instruction-specific
    Sustain
    Continuous/as required
    Trigger / range
    Voltage setpoints and system-operator instruction.
    Eligibility
    Generators and reactive compensation equipment meeting Grid Code requirements.
    Typical procurement
    Network-study-specific
    Pricing
    Grid Code and contract terms

Black start & restoration

  • Black Start

    operational

    Start generation without external power and support restoration of the MIS.

    Stated response
    Facility- and restoration-plan-specific
    Sustain
    Restoration-plan-specific
    Trigger / range
    Restoration plan.
    Eligibility
    Certified black-start facilities.
    Typical procurement
    Restoration-plan-specific
    Pricing
    Contract terms
Getting paid to exist

Does Oman Main Interconnected System spot market have a capacity mechanism?

No. Oman Main Interconnected System spot market's capacity/adequacy arrangement: No standalone capacity market. Responsibility sits with Nama Power and Water Procurement.

No standalone capacity market

not applicable

Long-term adequacy is procured through competitive IPP/PPA tenders by the single buyer, rather than a separate capacity-market auction.

competitive tender

Responsibility
Nama Power and Water Procurement
Auction held in 2025
No — No capacity auction for this market was found to have been held during 2025 in the sources reviewed.
Where this comes from

Official sources

Rules

Market explainer

Capacity-mechanism explainer

Current as of · from the Global Electricity Market Catalogue v1.2.0 (compiled to , CC BY 4.0). Facts belong to the linked official authorities; verify the current rules before design or bidding decisions.

Questions

Common questions about Oman Main Interconnected System spot market

Who operates Oman Main Interconnected System spot market?
Oman Main Interconnected System spot market covers Oman (Main Interconnected System) and is operated by Oman Electricity Market Operator; Nama Power and Water Procurement.
Was a qualifying capacity event held in Oman Main Interconnected System spot market in 2025?
No. No standalone capacity market: no qualifying 2025 event is recorded. No capacity auction for this market was found to have been held during 2025 in the sources reviewed.
How is energy traded, priced and settled in Oman Main Interconnected System spot market?
Oman Main Interconnected System spot market: A half-hourly day-ahead spot market has operated in the MIS since 1 January 2022 alongside long-term power purchase agreements and the single-buyer procurement model. pricing granularity — single system; settlement interval — 30 minutes.
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