Proposer: Marie Clark, ScottishPower Panel Date: 16th January 2014 0475: Mod Title: Update to Section G, Annex G3 (Prospective Erroneous Large AQ Calculation Proforma) Guidance: These slides are meant to provide a brief overview for the UNC Panel, to introduce what is trying to be achieved, to help them understand and decide the best process to be followed for new modifications. Please aim to be as brief as possible and not justify nor make the case for the Modification. Notes are provided in italics and if this template is being used should be removed. The Joint Office is available to help and support the drafting of any modifications, including guidance on completion of the Modification template and the wider modification process. Contact: enquiries@gasgovernance.co.uk or 0121 288 2107. Proposer: Marie Clark, ScottishPower Panel Date: 16th January 2014

Why change? Please use bullets to summarise what in the UNC is wrong and creating problems This Modification seeks only to update the AQ Values currently contained within Section G, Annex G-3 with those currently held within the LDZ CSEP NExA, Annex A The assignment of an AQ value from Annex G-3 represents an estimate only of the domestic customer’s consumption. This process can be used to appeal a domestic AQ where specific information relating to the gas ratings of appliances at a customer’s property is not known. The use of the AQ Values within the LDZ CSEP NExA was considered a reasonable alternative in the absence of any published consumption information relating to domestic occupied properties When Mod 392 was raised it omitted to include the requirement to update Annex G-3. This Modification will ensure the continued alignment of AQ Values held within Annex G-3 and the LDZ CSEP NExA, Annex A

Options Update to Section G, Annex G-3 only Please use bullets to summarise what options have been considered to fix the identified problem. Is a UNC modification the only route? Update to Section G, Annex G-3 only

Solution Please use bullets to briefly outline the solution contained within the modification. Update UNC Section G, Annex G-3 with the revised AQ values implemented via Mod 392 It is not proposed at this time that a formal review of the AQ values contained within the above table is undertaken to determine if they remain reflective of new build AQ values. A periodic review of these AQ values is undertaken via the iGT Shipper Group in accordance with the procedure implemented within iGT UNC Mod 051.

Recommended Steps Please use bullets to summarise the recommended steps. Please indicate how long you think the assessment process should last and if self-governance should apply or not. The Proposer recommends that this modification should be: (delete as appropriate) Subject to self-governance route