SHQ Review Process Update Erika Melén – Network Code Manager 10th December 2013

MOD390 – SHQ Review Current Process UNC Modification 390 was implemented in 2012 This introduced to code a process whereby DNOs provide reports to shippers by the end of April each year of sites where the SHQ/SPOR (maximum instantaneous rate in kWh/hour) appears significantly under- or overstated compared against actual usage. An obligation was placed on shippers to review the amended SHQ/SPOR amounts with customers and respond to the DNOs within 3 months to say whether or not they agreed to the amended values During the 2013 review 12 Shippers contacted for revisions to 146 sites - Out of the 12 Shippers only 7 responded – much improved from 2012 but still shows non-compliance from 5 shippers

Current SHQ Review Process SPOR report sent from GDN by end of April Shipper speaks to customer to establish if suggested values are suitable Shipper responds to GDN by end of July with either agreement to values or not (current breaches to this stage) If agreement then Shipper re-nominates site by end of August / Oct-Jan if SOQ reduction required (current breaches to this stage)

Option 1 SPOR report sent from GDN by end of April Shipper speaks to customer to establish if suggested values are suitable Shipper responds to GDN by end of July with either agreement to values or not If agreement then Shipper re-nominates site by end of August / Oct-Jan if SOQ reduction required GDN re-nomination of site on behalf of shipper in cases of no response / no re-nomination – notification and charge to shipper for work required If no response from shipper If no re-nomination by shipper

Option 2 SPOR report sent from GDN by end of April Shipper responds to GDN by end of July with either agreement to values or not If agreement then Shipper re-nominates site by end of August / Oct-Jan if SOQ reduction required Shipper speaks to customer to establish if suggested values are suitable If no re-nomination by shipper GDN re-nomination of site on behalf of shipper in cases of no response / no re-nomination – notification and charge to shipper for work required If no response from shipper - GDN contacts customer directly re SHQ change Customer agrees to suggested SHQ? YES – GDN informs shipper. 2 week objection period then re-nom NO – No further action

Option 3 SPOR report sent from GDN by end of April If agreement then Shipper re-nominates site by end of August / Oct-Jan if SOQ reduction required Shipper responds to GDN by end of July with either agreement to values or not Shipper speaks to customer to establish if suggested values are suitable 1st April Y+1 SPOR report run to show usage since end August Y-1 Where during Y-1 SPOR review a new higher SHQ value was suggested but the shipper either didn’t respond or re-nominate and the customer has used over the value. A penalty charge will be issued to the Shipper (similar to a SHQ Ratchet)

Thank you! Any preferred option for a modification?