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(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 exluded from the ACE). In Belgium the ACE equals the FRCE (Frequency Restoration Control Error)", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "ACE", "type": "double"}, {"name": "igccvolumeup", "description": "Imported volume from neighbouring LFC areas to the Belgian LFC area in case of negative imbalances in the Belgian LFC area.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "IGCC+", "type": "double"}, {"name": "afrrvolumeup", "description": "Upward aFRR volumes activated in the Belgian LFC area.Note: this includes the volumes activated for the needs of other LFC areas and excludes volumes activated in other LFC areas for the needs of the Belgian LFC area as well as volumes netted via IGCC", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "aFRR +", "type": "double"}, {"name": "mfrrsaup", "description": "Scheduled activated upward mFRR energy bids in Belgium, without activations for reserve sharing.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "mFRR SA +", "type": "double"}, {"name": "mfrrdaup", "description": "Direct activated upward mFRR energy bids in Belgium, , without activations for reserve sharing.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "mFRR DA +", "type": "double"}, {"name": "reserve_sharing_import", "description": "Activated upward (import) capacity from emergency support contracts with neighboring transmission system operators.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "Reserve sharing +", "type": "double"}, {"name": "igccvolumedown", "description": "Exported volume from the Belgian LFC area to neighboring LFC areas in case of positive imbalances in the Belgian LFC area.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "IGCC-", "type": "double"}, {"name": "afrrvolumedown", "description": "Downward aFRR volumes activated in the Belgian LFC area.Note: this includes the volumes activated for the needs of other LFC areas and excludes volumes activated in other LFC areas for the needs of the Belgian LFC area as well as volumes netted via IGCC", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "aFRR -", "type": "double"}, {"name": "mfrrsadown", "description": "Scheduled activated downward mFRR energy bids in Belgium, without activations for reserve sharing.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "mFRR SA -", "type": "double"}, {"name": "mfrrdadown", "description": "Direct activated downward mFRR energy bids in Belgium, , without activations for reserve sharing.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "mFRR DA -", "type": "double"}, {"name": "reserve_sharing_export", "description": "Activated downward (export) capacity from emergency support contracts with neighboring transmission system operators.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "Reserve sharing -", "type": "double"}], "basic_metas": {"default": {"metadata_processed": "2026-04-28T04:06:47.478352+00:00", "data_processed": "2026-04-28T04:06:45.113669+00:00", "modified": "2025-06-26T04:58:51+00:00", "license": "Elia Open Data Licence", "description": "Instantaneous system imbalance (and its components) and the area control error (ACE) in Elia\u2019s control area. 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When imbalance prices are published on an one minute basis, the published prices have not yet been validated and can therefore only be used as an indication of the imbalance price.Only after the published prices have been validated can they be used for invoicing purposes. Contains the historical data and is refreshed daily.\ufeffThis dataset contains data until 21/05/2024 (before MARI local go-live).", "publisher": "Customers, Market and System", "theme": ["Balancing"], "title": "Imbalance prices per minute (Historical data - up to 22/05/2024)", "keyword": ["Market", "Imbalance prices", "EU Reg. 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The possible values are the following: Non-validated: 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.Validated: The published values have been validated.   ", "annotations": [{"name": "facet"}, {"args": ["alphanum"], "name": "facetsort"}], "label": "Quality status", "type": "text"}, {"name": "calculationtime", "description": "The date and time at the end of which the calculation has been performed.", "annotations": [{"args": ["minute"], "name": "timeserie_precision"}], "label": "Calculation time", "type": "datetime"}, {"name": "netregulationvolume", "description": "The difference between the sum of the volumes of all upward regulations and the sum of the volumes of all downward regulations requested by Elia.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "Net regulation volume", "type": "double"}, {"name": "systemimbalance", "description": "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 article 30.7 of the TC BRP.", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "System imbalance", "type": "double"}, {"name": "alpha", "description": "Additional component of the imbalance price in case of high system imbalances", "annotations": [{"args": ["\u20ac/MWh"], "name": "unit"}], "label": "Alpha", "type": "double"}, {"name": "marginalincrementalprice", "description": "The highest price paid by Elia for upward regulation during the time slot.", "annotations": [{"args": ["\u20ac/MWh"], "name": "unit"}], "label": "Marginal incremental price", "type": "double"}, {"name": "marginaldecrementalprice", "description": "The lowest price received by Elia for downward regulation during the time slot.", "annotations": [{"args": ["\u20ac/MWh"], "name": "unit"}], "label": "Marginal decremental price", "type": "double"}, {"name": "strategicreserveprice", "description": "Price when a volume of the strategic reserve is activated in the system.", "annotations": [{"args": ["\u20ac/MWh"], "name": "unit"}], "label": "Strategic reserve price", "type": "double"}, {"name": "systemimbalancevsincrementalbidscoordinable", "description": "System imbalance compared to Incremental coordinable bids. ", "annotations": [{"args": ["MW"], "name": "unit"}], "label": "System imbalance vs Incremental bids coordinable", "type": "double"}, {"name": "positiveimbalanceprice", "description": "Tariff applicable for a positive imbalance.", "annotations": [{"args": ["\u20ac/MWh"], "name": "unit"}], "label": "Positive imbalance price", "type": "double"}, {"name": "negativeimbalanceprice", "description": "Tariff applicable for a negative imbalance. ", "annotations": [{"args": ["\u20ac/MWh"], "name": "unit"}], "label": "Negative imbalance price", "type": "double"}], "basic_metas": {"default": {"metadata_processed": "2025-03-07T07:48:18.050166+00:00", "data_processed": "2025-03-07T07:48:16.178465+00:00", "modified": "2024-08-23T07:07:22+00:00", "license": "Elia Open Data Licence", "description": "System imbalance prices applied if an imbalance is found between injections and offtakes in a balance responsible parties (BRPs) balance area. When imbalance prices are published on an one minute basis, the published prices have not yet been validated and can therefore only be used as an indication of the imbalance price.Only after the published prices have been validated can they be used for invoicing purposes. Contains the historical data and is refreshed daily.\ufeffThis dataset contains data until 21/05/2024 (before MARI local go-live).", "publisher": "Customers, Market and System", "theme": ["Balancing"], "title": "Imbalance prices per minute (Historical data - up to 22/05/2024)", "keyword": ["Market", "Imbalance prices", "EU Reg. 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