Account Energy Imbalance Cashflow (CAEIaj): payments by Imbalance Parties at System Buy Price (SBPj) for negative energy imbalance volumes, i.e. top-up, and payments to Imbalance Parties at System Sell Price (SSPj) for positive energy imbalance volumes, i.e. spill;
Information Imbalance Charge (CIIij): payments by Imbalance Parties at the Information Imbalance Price (IIPj) on the magnitude of any deviations of BM Unit Metered Volumes from Final Physical Notification (FPN) (as modified by any accepted balancing mechanism Offers or Bids). However, ever since the BSC was introduced, the Information Imbalance Price has been set always to be zero;
Period BM Unit Cashflow (CBMij): payments to Imbalance Parties at Offer Price for accepted Offers, and payments by Imbalance Parties at Bid Price for accepted Bids;
BM Unit Period Non-Delivery Charge (CNDij): payments by Trading Parties either: for non-delivered Offers, in the event that a payment at an Offer Price to a Trading Party exceeds the imbalance price paid on the shortfall resulting from any non-delivery; or for non-delivered Bids in the event that the imbalance price paid to a Trading Party for the spill caused by any non-delivery exceeds the price paid by the Trading Party for the Bid. Payments by Imbalance Parties in relation to non-delivered TERRE bids.
Residual Cashflow Reallocation Cashflow (RCRCaj): a payment to or from Trading Parties, being the aggregate of all Account Energy Imbalance Cashflows and Information Imbalance Charges pro-rated over a Trading Party’s Credited Energy Volumes. Specifically, payments are pro-rated according to the Credited Energy Volumes for Primary BM Units other than Interconnector BM Units that are in delivering Trading Units, and the Credited Energy Volumes times minus one for Primary BM Units other than Interconnector BM Units that are in offtaking Trading Units1;
Replacement Reserve Cashflow (CRRp): a payment to or from Imbalance Parties in respect of the BM Unit as a result of Replacement Reserve activations.
Replacement Reserve Instruction Deviation Cashflow (CDRp): a payment to or from Imbalance Parties based upon the difference between the TSO dispatched Replacement Reserve Accepted Offer Volume and the centrally defined EU Standard Product Shape Volume. These volumes are priced at the Balancing Energy Deviation Price. However, as per the P344 solution, the Balancing Energy Deviation Price has been set to zero.
System Operator Cashflow (CSOj): typically a payment by the Transmission Company to cover the net cost of Offer Acceptances, Bid Acceptances and Total System RR Cashflow.
Intellectual Property Rights, Copyright and Disclaimer
The copyright and other intellectual property rights in this document are vested in Elexon or appear with the consent of the copyright owner. These materials are made available for you for the purposes of your participation in the electricity industry. If you have an interest in the electricity industry, you may view, download, copy, distribute, modify, transmit, publish, sell or create derivative works (in whatever format) from this document or in other cases use for personal academic or other non-commercial purposes. All copyright and other proprietary notices contained in the document must be retained on any copy you make.
All other rights of the copyright owner not expressly dealt with above are reserved.
No representation, warranty or guarantee is made that the information in this document is accurate or complete. While care is taken in the collection and provision of this information, Elexon Limited shall not be liable for any errors, omissions, misstatements or mistakes in any information or damages resulting from the use of this information or action taken in reliance on it.
1 The sign convention of the BSC is that amounts of energy put on to the System are positive amounts and amounts taken from the System are negative. Hence the (generally) negative values in offtaking Trading Units are multiplied by minus one.