A-Z Finder

 

E

    Economic Dispatch

    means the process of determining optimised Market Schedule Quantities for an Optimisation Time Horizon for Price Maker Generator Units that are not Under Test, given a Unit Commitment Schedule for those Units as defined in Appendix N: “Operation of the MSP Software”.

     

    Effective Date

    means the Trading Day from which the registration of a Unit or Units to a Participant shall be effective, as specified in a Commencement Notice issued by the Market Operator, or as deferred in accordance with paragraph 2.48.  Effective Dates are aligned to Trading Day timescales and all references to Effective Date shall apply from the start of the relevant Trading Day at 06:00.

    For more information on Registration, please click here

     

    Electrical System Collapse

    means the situation existing when all Generation has ceased in part of the Transmission System and there is no electricity supply such that Black Start procedures as set out in the Grid Code are initiated.

     

    Eligible Availability

    means the level of Availability of a Generator Unit that is used for the determination of Capacity Payments in respect of the Unit.

     

    Emergency Meeting

    means an emergency Meeting of the Modifications Committee in accordance with paragraph 2.209.

     

    End of Restricted Range 1

    means the end-point in MW of the first restricted range of operation of a Generator Unit for the purpose of Appendix O: “Instruction Profiling Calculations” only.

     

    End of Restricted Range 2

    means the end-point in MW of the second restricted range of operation of a Generator Unit for the purpose of Appendix O: “Instruction Profiling Calculations” only.

     

    End Point of Start Up Period

    means the Minimum Stable Generation level of a Generator Unit.

     

    Ending Overlap Optimisation Period

    means, for any given Optimisation Time Horizon and the associated run of the MSP Software, that part of the Optimisation Time Horizon which falls after the relevant Trading Day.

     

    Energy Charge

    means the charge to be made to a Participant in respect of energy purchased during a Billing Period calculated as the product of SMP and the relevant quantity.

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    Energy Limit

    means an upper limit on the amount of energy that can be generated by an Energy Limited Generator Unit for a Trading Day.

     

    Energy Limit Factor

    means a factor between zero and one, which is multiplied by the Energy Limit to set a limit on the amount of energy that can be generated by an Energy Limited Generator Unit for the period between the end of the Trading Day and the end of the Optimisation Time Horizon for use within the MSP Software.

     

    Energy Limit MSP Constraint Cost

    means a value that is used within the MSP Software as set out within Appendix N: “Operation of the MSP Software”.

     

    Energy Limit Period

    means the time period between the Energy Limit Start and the Energy Limit Stop.

     

    Energy Limit Start

    means 06:00 on the Trading Day, and shall be submitted as such.

     

    Energy Limit Stop

    means the end of the Trading Period commencing at 05:30 on the Trading Day, and shall be submitted as such.

     

    Energy Limited Flag

    means a flag to indicate whether a Generator Unit is an Energy Limited Generator Unit.

     

    Energy Limited Generator Unit

    means a Generator Unit which complies with the criteria set out in paragraph 5.93 and is so registered by a Participant.

     

    Energy Limited Generator Unit Technical Characteristics

    means data submitted after the Trading Day by the System Operators identifying the redeclared Energy Limit for Energy Limited Generator Units.

     

    Energy Limited Generator Unit Technical Characteristics Data Transaction

    is a Data Transaction in relation to Energy Limited Generator Unit Technical Characteristics detailed in Appendix K: “Market Data Transactions”.

     

    Energy Payment

    means the payment to be made to a Participant in respect of a Billing Period for energy sold by that Participant in the relevant Billing Period calculated as the product of SMP and the relevant quantity.

    For more information on payments, please click here

     

    Engineering Tolerance

    means the percentage tolerance between the Dispatch Quantity under a Dispatch Instruction and Actual Output of a Generator Unit, without accounting for frequency deviations, within which the Generator Unit is deemed to be operating in accordance with its Dispatch Instruction, and which is used in the calculation of Uninstructed Imbalances.

     

    Error Supplier Unit

    means a Supplier Unit for a Jurisdiction for which Loss-Adjusted Net Demand in that Jurisdiction (allowing for net transfers between Jurisdictions) is calculated in accordance with paragraph 4.91.

     

    euro

    means the currency in Ireland.

     

     

     

    Ex-Ante Indicative Market Schedule

    means for a Trading Day the Market Schedule Quantities (MSQuh) for each Trading Period in the Trading Day for each Generator Unit u (excluding Autonomous Generator Units in accordance with paragraph 5.22 and Interconnector Residual Capacity Units in accordance with paragraph 5.83), produced by the Ex-Ante Indicative MSP Software Run as set out in paragraph 4.62.

    For more information on pricing runs please click here

    Ex-Ante Indicative MSP Software Run

    means as defined within Appendix N: “Operation of the MSP Software”.

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    Ex-Ante Indicative Operations Schedule

    means the schedule as determined day-ahead by the System Operators taking system constraints and reserve requirements into account to give indicative MW outputs for the Trading Day, including Interconnector flows and Pumped Storage Unit operation.

    For more information on pricing runs please click here

    Ex-Ante Loss of Load Probability

    means the Loss of Load Probability λ determined as part of the Capacity Payments calculation as set out in Appendix M: “Description of the Function for the Determination of Capacity Payments”.

    Excessive Generation Event

    has the meaning set out in paragraph 4.74.

     

    Expiry Date

    means the Trading Day up to which the registration of a Unit or Units is effective.

    For more information on Registration please click here

     

    Export Point

    means the nominal commercial point of entry to the Transmission System of the Active Power generated at a Transmission Connected or Distribution Connected site.

     

    Ex-Post Capacity Payments Proportion

    means the proportion, determined in accordance with paragraph 4.98, of the Annual Capacity Payment Sum that will be distributed into Trading Periods in the relevant Year based on the Ex-Post Loss of Load Probability (φ) for each Trading Period, determined at the end of the relevant Capacity Period.

     

    Ex-Post Indicative Market Schedule

    means for a Trading Day the Market Schedule Quantities (MSQuh) for each Trading Period in the Trading Day for each Generator Unit u (excluding Autonomous Generator Units for which the Ex-Post Indicative Market Schedule only includes Market Schedule Quantities for Trading Periods up until midnight on the Trading Day in accordance with paragraph 5.23, Interconnector Residual Capacity Units in accordance with paragraph 5.83 and Interconnector Error Units in accordance with paragraph 5.84) , produced by the Ex-Post Indicative MSP Software Run as set out in paragraph 4.63.

    For more information on pricing runs please click here

    Ex-Post Indicative MSP Software Run

    means as defined within Appendix N: “Operation of the MSP Software”.

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    Ex-Post Indicative Settlement

    means the Settlement processes from which Ex-Post Indicative Settlement Statements are derived.

    Ex-Post Indicative Settlement Statement

    means the Settlement Statement sent to the Participants before the Initial Settlement Statements are calculated.

    Ex-Post Initial Market Schedule

    means for a Trading Day the Market Schedule Quantities (MSQuh) for each Trading Period in the Trading Day for each Generator Unit u (excluding Interconnector Residual Capacity Units in accordance with paragraph 5.83 and Interconnector Error Units in accordance with paragraph 5.84), produced by the Ex-Post Initial MSP Software Run as set out in paragraph 4.64.

    For more information on pricing runs please click here

    Ex-Post Initial MSP Software Run

    means as defined within Appendix N: “Operation of the MSP Software”.

    For more information on pricing runs please click here

    Ex-Post Loss of Load Probability

    means the Loss of Load Probability φ determined as part of the Capacity Payments calculation as set out in Appendix M: “Description of the Function for the Determination of Capacity Payments”.

     

    Ex-Post Loss of Load Probability Table

    means a table of data relating to Input Margin and Output Loss of Load Probability used in the derivation of Ex-Post Loss of Load Probability.

     

    Ex-Post Loss of Load Probability Table Data Transaction

    is a Data Transaction in relation to the Ex-Post Loss of Load Probability Table detailed in Appendix K: “Market Data Transactions”.

     

    External Data Provider

    Any Meter Data Provider or Interconnector Administrator that is obliged under Appendix L “Meter Data Transactions” to submit Meter Data to the Market Operator.

     

SEMO is a joint venture between EirGrid PLC and SONI Limited