Imbalance prices 1'

Elia publishes an imbalance price calculated based on cumulative activated volumes per minute.

Cumulative imbalance price and components per minute

This page provides information about the cumulative imbalance price and its components for every minute of the previous hour.

Time interval for publication of data

At the specified time, the most recent available data are collected and displayed as quickly as technically possible. The cumulative ACE and SI values published differ from those of the Current System Imbalance, as the latter values are instantaneous values.
All published values are non-validated values and can therefore only be used for information purposes.

Elia Open Data License


Imbalance Prices 1min

  • Quarter
    Start and end time of the corresponding quarter hour.
  • Minute
    The minute at the end of which the calculation has been performed.
    Example: “11:49” means that all events which occurred between 11:45:00.00 (hh:mm:ss) until 11:49:59.99 have been taken into account to compute the estimation of the data related to the quarter hour 11h45-12h00
  • Quality status

    Indication on the reliability of the data
    The possible values are the following:

    • Non-validated (default): no error registered during the calculation and publication run. The published data are likely but have not been validated by an operator
    • Data issue: at least one error registered during the calculation and publication run. The published data are uncertain and must be reviewed by an operator

    Important remark: the reference for the imbalance settlement are the 15-minute data

  • ACE
    The Area Control Error (ACE) is the unintentional deviation from the scheduled control program for the power interchange of a control area. (all the intentional deviations from the program, due to units delivering FCR, or due to exchanges of energy on the EU balancing platforms, are therefore excluded from the ACE). In Belgium the ACE equals the FRCE (Frequency Restoration Control Error)
  • SI
    The System Imbalance (SI) is the difference between the unintentional deviation from the scheduled control program for the power interchange of a control area and the frequency restoration reserves activated to cover the demands of this control area. In practice, it is calculated as described in T&C BRP. The values published at a given minute are computed taking into account the average of the events that happened between the start of the quarter hour and the end of the considered minute.
  • α

    Alpha

    Additional incentive applied on top of the regulation costs in cases of major system imbalances. The value of the alpha component is computed taking into account the measured SI of previous quarter hours (published on the 15-minute imbalance price table) and the estimated SI for current quarter hour (published in the current table)

  • α’

    Alpha’

    Additional incentive applicable in cases of reserve sharing activations requested by Elia with neighboring TSO(s). The value of the alpha’ component is computed taking into account the marginal price of reserve sharing activations requested by Elia. As of the first connection to MARI/Picasso the a' becomes zero

  • MIP
    The marginal price of upward activations comprises, for a given quarter-hour, the lowest price of energy used for upward activations to compensate for the imbalance in the Belgian control area for that quarter-hour, a floor and a dead band. For more information see article 30 of T&C BRP
  • MDP
    The marginal price of downward activations comprises, for a given quarter-hour, the lowest price of energy used for downward activations to compensate for the imbalance in the Belgian control area for that quarter-hour, a cap and a dead band. For more information see article 30 of T&C BRP
  • Price
    The imbalance price calculated for each quarter-hour.

Useful links

Open DataClick here to access to access all grid data published by Elia. The data can be easily explored, downloaded in standard file formats and accessed via API’s for use by other applications.
Role of the Balance Responsible PartyFor more information about the role of the BRP and how to become one, and for more details about imbalance tariffs, visit our 'Role of the BRP' page.

Keeping the balance

To find out more about the balancing mechanism and learn how to become a Balance Service Provider, see our 'Keeping the balance' page.

End User Documentation "1-minute publications"

Learn more about the information and hypotheses used in the 1-minute publication

Contact

Any questions about balancing data?
Transparency@elia.be

imbalance prices (15 minutes)             

Elia publishes imbalance price applied if an imbalance is found between injections and offtakes in a BRP's balance area.

Read more

Activated volumes and prices (1 minute)

Elia publishes cumulative volumes and prices per product of the activated balancing energy per minute.

Read more

Grid Data


In the interest of transparency and in accordance with its legal obligations, Elia publishes data about the Belgian electricity market. Return to the Grid Data homepage for an overview of the different sections.

Return to the Grid Data homepage

Balancing data

Consult the data in quasi real time on the restoration of the balance of the electrical system.                                                                                                                        

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