C&C Group Paul Gregory, Service Delivery Manager June 20, 2012 - PowerPoint PPT Presentation

competitive advantage through technology C&C Group Paul Gregory, Service Delivery Manager June 20, 2012

Health of HH Market • Figures for previous 5 years show that counts of non- compliances are reducing indicating health of HHMS market is improving. • Count of Category 1 non-compliances other than standing data issues remain similar to last year. • Of those SVA HHMS inspected this year, 1.5% were identified as having Category 1 non-compliances that are likely to affect Settlement. • Where Category 1 non-compliances have been identified there is often a lack of commissioning records also.

Health of HH Market • There remains a risk to Settlement from HHDCs recording incorrect data from faulty or inaccurate Metering Systems as recognised by some of ELEXON’s top Settlement Risks, namely: • 28 HHMOAs do not provide MTD to the correct HHDCs • 112 HHDCs use data from faulty Metering Systems • 113 LDSO-owned Settlement Metering Equipment is not maintained • Evidence also leads us to conclude that there is a risk to Settlement, as we cannot confirm if commissioning has been completed for all Metering Systems.

Service Performance • Visits completed in this audit year • 102 CVA HHMS – All Main Sample • 1,134 SVA HHMS • 1,131 – Main Sample (1% representative sample of the mandatory Half Hourly metered population) • 2 – Re-inspections (where a Cat 1 non-compliance had been previously identified and then rectified) • 1 – Targeted Inspection (where non-compliance was suspected) • There was no Specific Sample for 2011-2012

Access • SVA Cancellation/No Access Rate Cancellation/No Access Comparison Chart 12% 10% 8% 6% 4% 2% 0% Year 1 Year 2 Year 3 Year 4 Year 5 Audit Period SVA Cancellations No Access SVA

Access • CVA Cancellation/No Access Rate Cancellation/No Access Comparison Chart 30% 25% 20% 15% 10% 5% 0% Year 1 Year 2 Year 3 Year 4 Year 5 Audit Period CVA Cancellations No Access CVA

Audit Findings • SVA Category 1 - Non-Compliance Summary SVA Category 1 Non-compliances 1 Category 1.06 Non-compliance Category 2 Category 1.04 6 Category 1.03 8 Category 1.02 2 Category 1.01 0 1 2 3 4 5 6 7 8 Non-compliance Count Category 1.01 Inaccuracy in Standing Data Category 1.02 Metering Equipment Incorrect Category 1.03 Timing Error Category 1.04 Transformer Ratios incorrect Category 1.06 Miscellaneous

Audit Findings • CVA Category 1 Non-Compliance Summary • Category 1 non-compliance count this year - 2 • The risk to Settlement was minimal as both failings were associated with check meters . • Total Category 1 non-compliance count since 2007 - 3 • CVA market performance is good with regards to Metering System setup

Rectification • SVA Category 1 Rectification Average days to resolve 60 58 50 40 Days to Resolve 31 30 30 26 23 20 10 0 Year 1 Year 2 Year 3 Year 4 Year 5 NC's Raised in Specific Audit Year

Rectification • CVA Category 1 Rectification • Both Category 1 non-compliances were related to issues with MTDs at the CDCA • Rectification took on average 55 days

Rectification • Rectification Innovation • Suppliers have requested more information to aid them with rectification of non-compliances • Development of a Category 1 rectification proforma in conjunction with ELEXON • The Proforma has 2 aims; • To Provide TAA users with a clearer understanding of the non-compliances raised and also act as a guide to what action needs to be taken • To Improve rectification timescales

Audit Findings • SVA Category 2 Non-Compliance Summary SVA Category 2 Non-compliances Category 2.17 257 Categroy 2.16 362 Non-compliance Category Category 2.15 551 Category 2.14 26 Category 2.13 36 Category 2.11 45 Category 2.10 13 Category 2.09 13 Category 2.06 248 Category 2.03 4 Category 2.02 56 Category 2.01 19 0 100 200 300 400 500 600 Non-compliance count Category 2.06 Overall Accuracy may not be being maintained Category 2.15 Commissioning Category 2.16 Measurement Transformer Calibration Certificates Category 2.17 Meter Calibration Certificates

Audit Findings • SVA Category 2 Non-Compliance Summary SVA Category 2 Non-compliance description Category 2.01 Inaccuracy in Standing Data MOA Category 2.02 Inaccuracy in Standing Data DC Category 2.03 Non-provision of D0268 Category 2.06 Overall Accuracy may not be being maintained Category 2.09 Inadequate Overcurrent Protection Category 2.10 Phase Failure Alarm Category 2.11 Integrity of Meter Seals Category 2.13 Miscellaneous Category 2.14 Timing error (minor) Category 2.15 Commissioning Category 2.16 Measurement Transformer Calibration Certificates Category 2.17 Meter Calibration Certificates

Audit Findings • SVA Category 2 Non-Compliance Summary • 1,630 Category 2 non-compliances were recorded. • The highest frequency are for missing calibration certificates, overall accuracy limits exceeded and missing/incomplete commissioning records • Commissioning non-compliance figures average around 25% of those identified on an annual basis • Significant increase in the number of commissioning non-compliances; with figures rising to 34% this year • Minor clock timing failures have fallen by 60% in the last year

Audit Findings • CVA Category 2 Non-Compliance Summary

Audit Findings • CVA Category 2 Non-Compliance Summary CVA Category 2 Non-compliance description Category 2.01 Inaccuracy in Standing Data MOA Category 2.02 Inaccuracy in Standing Data DC Category 2.03 Non-provision of D0268 Category 2.06 Overall Accuracy may not be being maintained Category 2.09 Inadequate Overcurrent Protection Category 2.10 Phase Failure Alarm Category 2.11 Integrity of Meter Seals Category 2.13 Miscellaneous Category 2.14 Timing error (minor) Category 2.15 Commissioning Category 2.16 Measurement Transformer Calibration Certificates Category 2.17 Meter Calibration Certificates

CDCC • CDCC Accuracy Rate CDCC Comparison Chart 100% 99% 98% 97% 96% 95% 94% Year 1 Year 2 Year 3 Year 4 Year 5 Compliant Non-compliant Not performed

Previously Reported Issues • Commissioning • Significant increase in the number of commissioning non-compliances; with figures rising to 34% this year • We support the good work of the TAMEG chaired by ELEXON, with the Modification Proposal (P283) which aims to address the issue of who is best placed to carry out commission tests on CTs and VTs. • Specific Sample to be conducted for HHMS installed post 1 Jan 2008 with aim to identify any difference in the way that newly installed HHMS commissioning records are provided to the TAA versus aged HHMS.

Previously Reported Issues • Measurement Transformer Certificates • Non-compliances covering 164 inspections resolved resulting from an exercise conducted by ELEXON and assisted by the TAA using the NMTES • SVA Overall Accuracy calculations undertaken as part of our audit process indicates that around 25% relied upon data being available via the NMTES • The NMTES has become an important industry tool and participants should be encouraged to further develop it using BSCP515.

Previously Reported Issues • Pre-Audit Pre-audit Traceability 25 20 15 10 5 0 Apr/11 May/11 Jun/11 Jul/11 Aug/11 Sep/11 Oct/11 Nov/11 Dec/11 Jan/12 Feb/12 Mar/12 Number of suspected pre-audits Commissioning records post dated

• Conclusion • The market is healthier but there is still the possibility of in excess of 1700 HHMS that could pose a risk to Settlement based on audit findings this year • Category 2 non-compliance counts show a gradual fall, however commissioning still an issue • It is hoped that Modification Proposal P283 will aid to a further reduction in commissioning issues for newly commissioned sites going forward

Conclusion Any Questions