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

Confirm Allocations Walkthrough start

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

Customer Login Problems Example of registration form If you have forgotten your password or you or a colleague requires web access, please go to www.transpower.co.nz and click on the appropriate links as shown below: Select customer from the dropdown Click if you need to register

My Transmission Customers Landing Page Once logged in, you will be taken to your landing page – the gateway to access information relevant to you. Click to access your pricing information

My Transmission Pricing Landing Page Once My Transmission Pricing is clicked, you will be taken to your transmission pricing landing page where you can access the allocations reports. Select from dropdown the relevant pricing year Click to access the allocations reports

My Transmission Pricing Pages Overview www.transpower.co.nz Customer login My Transmission Landing Page Confirm Assets Confirm Allocations Publish Prices Customer Operated Switches Reports CLADs by Connection Location Asset Comparison Reports Pricing Summaries and Graphs Customer Specific AMD, AMI, SIMI, HAMI, RCPD, EOC Reports and Data (Draft, Provisional & Final) Connection Charges and Grid Charges Schedules CLADs by Connection Location 16 Sep to 30 Sep 16 Sep to 30 Sep by mid November This is a high-level view of the pages and associated reports found within the customer area.

Example of Confirm Allocations Page SIMI and HAMI will be combined as one report from PY2017/18. HAMI will cease to exist from PY2020/21. The full year’s reports and data will be available in the middle of September together with the asset reports 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

Determining AMD: AMD is the average of the 12 highest net off-take quantities, based on a ranking of ½ hour periods from ‘1st Sept period 1’ to ‘31st 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

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

Determining HAMI and SIMI HAMI and SIMI only apply to South Island Generation Customers. HVDC charge will be 100% SIMI charge starting PY2020-2021. Pricing Year HAMI SIMI Apr 2017 – Mar 2018 Apr 2013 – Mar 2014 Apr 2014 – Mar 2015 Sep 2014 – Aug 2015 Apr 2015 – Aug 2015 Sep 2015 – Aug 2016 Apr 2018 – Mar 2019 Sep 2016 – Aug 2017 Apr 2019 – Mar 2020 Sep 2017 – Aug 2018 Apr 2020 – Mar 2021 Sep 2018 – Aug 2019 Apr 2021 – Mar 2022 Sep 2019 – Aug 2020

Example SIMI/HAMI Report

Determining RCPD RCPD is used to calculate interconnection charges for each customer at each of their connection locations. RCPD is determined by aggregating net off-takes of each customer in a connection location, during the 100 regional peak demand trading periods of the Capacity Measurement Period but excluding periods from 1 Nov to 30 Apr except for the USI region.

Example RCPD Report (a 4-page report but below shows only the first and last pages)

Exceptional Operating Circumstance (EOC) If when calculating AMD, AMI, SIMI 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, SIMI and or any RCPD as per clause 34 of TPM.

Raw Data we are providing: As well as the AMI, AMD, RCPD, HAMI and SIMI 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, SIMI and RCPD. If you wish, you can use this data to confirm that our calculations are correct.

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.

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