Formal title: Main imbalance price based on ex-post unconstrained schedule

Current Status

Initial Written Assessment
Assessment Procedure
Report Phase
With Authority


This Modification seeks to amend the calculation of the “main” imbalance price such that when the market is short (NIV>0), System Buy Price (SBP) will be based on the least expensive Offers that the System Operator (SO) could have utilised on an unconstrained system. Conversely, when the market is long (NIV


P211 was raised by EDF Energy on 16 April 2007. The final Modification Report was submitted to the Authority on 22 October 2007. The BSC Panel provided a majority recommendation to the Authority to reject P211. The Authority rejected the Proposed Modification on 16 October 2008.


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