1. 1 This presentation outlines the required activities for customers to confirm their allocations data. Customer Walkthrough (Confirm Allocations)

2. 2 Confirm Allocations Walkthrough start

3. 3 Customer Login Go to www.transpower.co.nz and login using the supplied username and password.www.transpower.co.nz

4. 4 Customer Login Problems If you have forgotten your password or a colleague requires web access, please go to www.transpower.co.nzwww.transpower.co.nz and click on the appropriate links as shown below: Example of registration form Links Forgotten Password

5. 5 My Transmission Landing Page Once logged in, you will be taken to the landing page. Please note you will still be able to access the asset reports and diagram from the landing page.

6. 6 Website Overview This is a high-level view of the pages and associated reports found within the customer area. Asset Comparison Reports My Transmission Landing Page Confirm Assets Confirm Allocations Publish Prices Customer Specific AMD, AMI, HAMI, RCPD, EOC Reports and Data (Draft, Provisional & Final) www.transpower.co.nz Customer login Customer Operated Switches Reports CLADs by Connection Location Pricing Summaries and Graphs Connection Charges and Grid Charges Schedules CLADs by Connection Location

7. 7 11/12 th ’s Data This year we will only be distributing 11/12ths (Sept 13 to July 14) capacity measurement figures if there is a significant variances from the previous years capacity measurement data. In late September you will be provided with a full year’s metering data for each of your connection locations, and reports showing determinations of your relevant AMI, AMD, HAMI and RCPD. This will be uploaded to your secure ‘My Transmission’ area for your review.

8. 8 The full year’s reports and data will be available late September If we are advised of any potential errors/omissions we will review, fix and upload in the provisional column and you will be advised Once allocations are confirmed, we will move all reports/data files to final and no further action is required until the Publish Prices stage Example of Confirm Allocations Page

9. 9 Determining AMD: AMD is the average of the 12 highest net off-take quantities, based on a ranking of ½ hour periods from ‘1 st Sept period 1’ to ‘31 st August period 48’ The same process is used to determine AMI, but using net injection quantities AMI and AMD are used to apportion connection charges for shared substation assets

10. 10 Example AMI/AMD Reports An AMI and/or AMD report will be provided to each customer showing all of its locations where net injection and/or net off-take has occurred in any ½ hour period within the capacity measurement period

11. 11 Determining HAMI HAMI only applies to South Island Generation Customers and is only determined for customers qualifying connection locations. The 2015 HAMI is determined by calculating the average of the 12 injection peaks for each South Island Injection connection location for each of the following HAMI assessment periods: 1 Apr 2011 to 31 Mar 2012 1 Apr 2012 to 31 Mar 2013 1 Apr 2013 to 31 Mar 2014 1 Sep 2013 to 31 Aug 2014 1 Apr 2014 to 31 Aug 2014 The highest average of the five HAMI assessment periods is the 2015 HAMI for the customer.

12. 12 Example HAMI Report

13. 13 Determining RCPD RCPD is used to calculate interconnection charges for each customer at each of their connection locations as per the following example for a (fictional) USI customer. RCPD is determined by aggregating customer off-takes at each off-take customers connection location in each region, during the N regional peak demand periods, where N = 12 in the Upper North and Upper South regions and N = 100 in the Lower North and Lower South regions.

14. 14 RCPD Regions

15. 15 Example RCPD Report

16. 16 Exceptional Operating Circumstance (EOC) If when calculating AMD, AMI, HAMI and RCPD quantities prior to the start of the pricing year, Transpower, in its sole discretion considers that an exceptional operating circumstances has occurred, it may adjust AMD, AMI, HAMI and or any RCPD as per clause 34 of TPM.

17. 17 Raw Data we are providing: As well as the AMI, AMD, RCPD and HAMI reports, Transpower will also be providing a CSV data file with all ½ hour metering data for your connection locations. Each dataset has 17,520 (365 * 48 ½ hour periods) rows. This is the data used to determine AMI, AMD, HAMI and RCPD. If you wish, you can use this data to confirm that our calculations are correct.

18. 18 Checking Please check your reports and data for reasonableness and to ensure we have captured all abnormal events at your connection locations. The AMI, AMD and HAMI results should not change unless you have identified an issue, however the RCPD report content may change if other customers have identified issues in your region. Once you have checked your data and reports, please provide feedback via the online form.

19. 19 Publish Prices A walkthrough for Publish Prices will be provided closer to the time.