Balance delta 2017

Explanation

Time indication:

• Sequence number: sequence number of the presented minute information in the full day concerned
• Time: hour and minute when the snapshot of the values was taken

IGCC contribution

IGCC is based on "netting" of instantaneous imbalance values from the participating TSO's and is implemented as simultaneous mutual support: the imbalance of a participating TSO will be decreased when the same imbalance amount can also be decreased in the opposite direction on the imbalance of (a combination of) other participating TSO's. The volume of the contribution in both upward and downward regulation for the benefit of TenneT TSO b.v. is maximised to the available free transport capacity and/or the available upward and downward automatic Frequency Restoration Reserve (aFRR) in the Load Frequency Controller (LFC)

• Up: power supply from IGCC to NL (MW)
• Down: power supply from NL to IGCC (MW)

Activated power:

• Regulating: the aFRR capacity (MW) activated by the national LFC (MW):
  • up: quantity of the activated upward aFRR (sum of supplier upward setpoints)
  • down: quantity of the activated downward aFRR (sum of supplier downward setpoints)
• Reserve: quantity of dispatched mFRR bids (MW)
  • up: quantity of dispatched upward mFRR
  • down: quantity of dispatched downward mFRR
• Incident (0,1): this indicator is set to 1 upon activation of incident reserve in the respective direction to restore the Dutch power balance for situations with large power deviations. The activation of incident reserve influences the imbalance price for the PTU comprising this minute.
  • up: becomes 1 when incident reserve is activated for a significant Dutch power shortage
  • down: becomes 1 when incident reserve is activated for a significant Dutch power surplus

Price development:

• Highest price Up: price of the activated bid with the highest bidprice (€/MWh)
• Midprice: the calculated default activation/imbalance price (€/MWh will be used in the financial settlement when TenneT does not activate any power in the PTU comprising this minute)
• Lowest price Down: price of the activated bid with the lowest bidprice (€/MWh)

The high and/or low price remains empty in a situation where no power is activated in the respective direction or when activated power, from the start of a new PTU, is not needed anymore for balance corrections.

In the determination of the regulation state minutes are not included in which there was activation of reserves but there was no indication of a price accompanying the published activated power (>0).

The activation prices, the regulation state and the incident reserve up/down capacity indicators in the overview of settlement prices will play a leading role in the settlement.

How to use this page?

This web page presents data for today’s most recent 30 minutes. The information is updated once a minute. A delay of a few minutes in the processing and presentation of the real-time information from different systems is unavoidable. Only the sequence number of a line will be presented when, due to disruptions, no up-to-date information is available. Lines will be completed at a later point in time when the information becomes available within the timeframe of the overview.

The balance delta information presents for the power values and prices only so-called 1-minute snapshots of the TenneT contribution on the NL balancing process. The financial settlement is bases on the 4-second results from the TenneT system and can therefore deviate from the presented information.

Via the ‘export data’ function, historical Balance Delta information can be obtained. A link is available to download the presented Balance Delta values in XML format.

Further information

For further information related to this subject, please refer to the pages on the Product information regulating power.