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Interconnector Under Test. Update to TSC Modifications Committee 5 th December 2012. Background. Mod 10 1 1 raised on 22nd March 2011 Testing Tariffs to apply for Commissioning, Grid Code Compliance or otherwise Meeting 35 Deferred pending a SEMO Impact Assessment Meeting 36
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Interconnector Under Test Update to TSC Modifications Committee 5th December 2012
Background • Mod10 11 raised on 22nd March 2011 • Testing Tariffs to apply for Commissioning, Grid Code Compliance or otherwise • Meeting 35 • Deferred pending a SEMO Impact Assessment • Meeting 36 • 3 Options presented • Option 1 was Recommended for Approval • RA Approval • Letter issued 21st July 2011
Mod 10 11 Implementation Options FRR dated 28 June 2011 set out the implementation options: • Option 1 - Market require a facility to designate an Interconnector as Under Test in settlement for a range of trading dates. • Option 2 - Restriction for submitting bids (definition for a range of testing dates in MPI) • Option 3 –Inclusion of an Interconnector Unit test profile. This relates to an agreed testing profile between the IA and the SO.
Modifications Committee Views • The Committee agreed that Option 1 should be pursued due to the timelines for Intraday Release and EWIC deployment. • A full solution including Options 1, 2 and 3 was preferable due to uninstructed imbalances arising while under test and restricted bidding. • In the FRR, the SOs stated that a Modification to Appendix E would be required for Option 3 to be implemented and the SOs would consider raising this Modification in due course.
Mod 10 11 Implementation • Mod 10 11 (Option 1) implementation date in the CMS was November 2012 release • Mod 33 11 allowed SEMO to perform workaround to manually apply the Testing Tariffs as per Option 1 from the date of EWIC Commissioning (i.e. July 2012) • The T&SC was updated to allow Interconnectors Under Test with an effective date for July 2012.
Issues with Option 1 • Not appropriate for Operational Interconnectors • i.e. Not suitable for Interconnector which goes on/off test • No ability to block bids and offers • Interconnector participants can submit bids/offers even if Interconnector is under test • No provision available for test profiles • RA approval required to set DOG and PUG to zero as Interconnector would be unfairly penalised Cost of Options 2 and 3 to implement • New vendor quote received for revised design for Options 2 and 3 is now €307k compared with €504k • Investigated alternate approach
TSOs Recommendation • Set ATC to zero when an Interconnector is testing • IUN/MIUNs will be zero for Interconnector Users and their bids will not be taken into consideration • DOG and PUG will need to be set to zero on an annual basis i.e. TSOs will recommend through annual consultation process for RA approval • Can be implemented immediately • No further modification to the T&SC is therefore recommended in respect of Interconnector Under Test