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This presentation outlines the required activities for customers to confirm their allocations data.

Customer Walkthrough (Confirm Allocations)

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Confirm Allocations Walkthrough start

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Customer Login

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

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Customer Login Problems

If you have forgotten your passwordor a colleague requires web access,please go to www.transpower.co.nzand click on the appropriate links asshown below:

Example of registration form

Links

Forgotten Password

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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.

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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.nzCustomer login

Customer Operated Switches Reports

CLADs by Connection Location

Pricing Summaries and Graphs

Connection Charges and Grid Charges Schedules

CLADs by Connection Location

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11/12th’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.

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• 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

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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

SubCode Date Period Demand (kW) Rank

ANI 10/07/2013 37 2634 1

ANI 8/07/2013 37 2628 2

ANI 30/10/2013 14 2618 3

ANI 9/07/2013 37 2610 4

ANI 31/05/2013 37 2608 5

ANI 9/07/2013 36 2606 6

ANI 31/05/2013 38 2604 7

ANI 8/07/2013 38 2602 8

ANI 10/07/2013 38 2600 9

ANI 17/07/2013 37 2600 10

ANI 7/07/2013 37 2598 11

ANI 20/05/2013 38 2596 12

Average of the 12 peaks for substation ANI (and therefore its AMD) 2609

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Example AMI/AMD ReportsAn 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

Anytime Maximum Injection (AMI) by Anytime Maximum Demand (AMD) by

Connection Location Connection Location

Customer: Hydro NZ Limited Customer: ABC Lines Limited

Connection Location: Deep Gorge Connection Location: Penguin Heights

Rank Date Period Net Injection Rank Date Period Net Offtake

1 3 Mar 2013 9 5,704 1 9 Jan 2013 31 3,482

2 3 Mar 2013 8 5,696 2 13 Jul 2013 37 3,470

3 3 Mar 2013 7 5,670 3 15 Jul 2013 37 3,460

4 2 Mar 2013 8 5,664 4 13 Jul 2013 38 3,454

5 2 Mar 2013 7 5,660 5 16 Jul 2013 37 3,452

6 4 Mar 2013 8 5,644 6 16 Jul 2013 40 3,446

7 3 Mar 2013 6 5,640 7 15 Jan 2013 27 3,430

8 3 Mar 2013 5 5,634 8 23 Oct 2012 17 3,428

9 4 Mar 2013 7 5,628 9 14 Jul 2013 37 3,424

10 2 Mar 2013 9 5,628 10 15 Jul 2013 38 3,422

11 5 Mar 2013 7 5,626 11 17 Jul 2013 37 3,414

12 2 Mar 2013 6 5,618 12 13 Jul 2013 39 3,412

Average: 5,651 Average: 3,441

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Determining HAMI

HAMI only applies to South Island Generation Customers and is onlydetermined for customers qualifying connection locations. The 2015HAMI is determined by calculating the average of the 12 injection peaks foreach South Island Injection connection location for each of the following HAMIassessment periods:

1 Apr 2011 to 31 Mar 20121 Apr 2012 to 31 Mar 20131 Apr 2013 to 31 Mar 20141 Sep 2013 to 31 Aug 20141 Apr 2014 to 31 Aug 2014

The highest average of the five HAMI assessment periods is the 2015 HAMI forthe customer.

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Example HAMI Report

Historical Anytime Maximum Injection (HAMI) by Connection LocationCustomer: Demo Co Ltd

Connection Location: Demoville

Period Injection Period Injection

1 16 Dec 2010 31 2,870 1 30 Nov 2011 46 1,728

2 28 Nov 2010 31 2,840 2 22 Mar 2012 33 1,364

3 16 Dec 2010 35 2,760 3 21 Jun 2011 9 1,318

4 16 Dec 2010 32 2,720 4 05 Feb 2012 41 1,262

5 16 Dec 2010 33 2,702 5 30 Nov 2011 45 1,260

6 28 Nov 2010 30 2,698 6 21 Jun 2011 10 1,242

7 16 Dec 2010 36 2,664 7 05 Feb 2012 42 1,228

8 16 Dec 2010 34 2,650 8 30 Nov 2011 48 1,222

9 28 Nov 2010 29 2,634 9 21 Jun 2011 8 1,186

10 10 Nov 2010 31 2,596 10 13 Nov 2011 46 1,168

11 16 Dec 2010 30 2,594 11 22 Mar 2012 32 1,160

12 16 Dec 2010 26 2,576 12 22 Mar 2012 34 1,076

Average 2,692 Average 1,268

Period Injection Period Injection

1 14 Jan 2013 26 2,088 1 14 Jan 2013 26 2,088

2 23 Feb 2013 3 2,086 2 23 Feb 2013 3 2,086

3 14 Jan 2013 28 2,060 3 14 Jan 2013 28 2,060

4 14 Jan 2013 21 2,002 4 14 Jan 2013 21 2,002

5 14 Jan 2013 20 1,934 5 14 Jan 2013 20 1,934

6 23 Feb 2013 4 1,832 6 23 Feb 2013 4 1,832

7 14 Jan 2013 18 1,790 7 15 Mar 2013 28 1,790

8 15 Mar 2013 28 1,790 8 14 Jan 2013 18 1,790

9 02 Mar 2013 16 1,780 9 02 Mar 2013 16 1,780

10 03 Mar 2013 8 1,766 10 03 Mar 2013 8 1,766

11 03 Mar 2013 7 1,764 11 03 Mar 2013 7 1,764

12 03 Mar 2013 6 1,740 12 03 Mar 2013 6 1,740

Average 1,886 Average 1,886

Period Injection

1 03 Jul 2013 2 856

2 05 Apr 2013 29 838

3 28 Jun 2013 24 800

4 28 Jun 2013 26 766

5 28 Jun 2013 25 764

6 22 Aug 2013 43 748

7 29 Jun 2013 23 724

8 29 Jun 2013 26 716

9 22 Aug 2013 44 710

10 03 Jul 2013 3 704

11 17 Aug 2013 17 702

12 18 Aug 2013 31 700

Average 752

1 2

3 4

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01 Apr 2010 to 31 Mar 2011

01 Apr 2012 to 31 Mar 2013

01 Apr 2011 to 31 Mar 2012

Date Date

01 Sep 2012 to 31 Mar 2013

Date

Date

01 Apr 2013 to 31 Aug 2013

Date

1 01 Apr 2010 to 31 Mar 2011 2,692 #

2 01 Apr 2011 to 31 Mar 2012 1,268

3 01 Apr 2012 to 31 Mar 2013 1,886

4 01 Sep 2012 to 31 Mar 2013 1,886

5 01 Apr 2013 to 31 Aug 2013 752

HAMI = 2,692

HAMI = highest in any of the five periods

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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.

Rank USI Peak Date Half Hour Period USI kW Example Sub kW

1 6/05/2013 16 1,072,890 17,724

2 6/05/2013 17 1,064,088 18,557

3 7/05/2013 16 1,057,312 17,956

4 29/05/2013 16 1,052,858 16,723

5 29/05/2013 17 1,052,654 18,873

6 28/05/2013 16 1,052,028 16,776

7 13/05/2013 16 1,051,586 18,806

8 7/05/2013 17 1,051,572 18,248

9 28/05/2013 17 1,051,274 16,182

10 30/05/2013 16 1,050,990 16,058

11 26/05/2013 36 1,050,172 17,613

12 6/05/2013 18 1,047,460 18,017

Average Example Sub RCPD demand (kW) 17,628

Transpower Interconnection Rate (2014/15) $90.66

Interconnection charge for Example Sub for year to 31 March 2015 $1,598,131.82

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RCPD RegionsNorth Island

The connection locations in the UNI region are:

Code Name Code NameALB Albany MPE Maungatapere

BOB Bombay MTO Maungaturoto

BRB Bream Bay OTA Otahuhu

DAR Dargaville OTC Otahuhu B

GLN Glenbrook PAK Pakuranga

HEN Henderson PEN Penrose

HEP Hepburn Rd ROS Mt Roskill

HLY Huntly SVL Silverdale

KEN Kensington SWN Southdow n

KOE Kaikohe TAK Takanini

KTA Kaitaia TWH Te Kow hai

MDN Marsden WEL Wellsford

MER Meremere WES Western Rd

MNG Mangere WIR Wiri

WRD Wairau Road

The Upper North Island (UNI) is described as the geographical area north of Huntly, including Glenbrook,Takanini, Auckland and the Northern Isthmus.

The rest of the connection locations in the North Island are in the Low er North Island (LNI region)

South Island

The connection locations in the USI region are:

Code Name Code NameABY Albury KIK Kikiw a

ADD Addington KKA Kaikoura

APS Arthurs Pass KUM Kumara

ARG Argyle MCH Murchison

ASB Ashburton MLN Middleton

ASY Ashley MOT Motueka

ATU Atarau MPI Motupipi

BLN Blenheim ORO Orow aiti

BRY Bromley OTI Otira

CLH Castle Hill PAP Papanui

COB Cobb RFN Reefton

COL Coleridge SBK Southbrook

CUL Culverden SPN Springston

DOB Dobson STK Stoke

GYM Greymouth TIM Timaru

HKK Hokitika TKA Tekapo A

HOR Hororata TMK Temuka

ISL Islington UTK Upper Takaka

KAI Kaiapoi WPR Waipara

KBY Kimberley WPT Westport

The Upper South Island (USI ) is defined in terms of all GXPs supplied from the major concentration of generation in the Waitaki Valley and south of that area. These GXPs are supplied by the 220 kV system from Tekapo B, Tw izel and Livingstone.

The rest of the connection locations in the south island are in the Low er South Island (LSI) region.

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Example RCPD Report

Customer: XYZ Power Distribution Limited

Connection Location: Greenway Park

Rank Date PeriodRCPD Contribution

Regional Demand

1 29 Jun 2013 36 5,784 1,045,810

2 29 Jun 2013 35 6,828 1,040,070

3 20 May 2013 36 8,866 1,032,122

4 29 Jun 2013 34 6,168 1,030,500

5 29 Jun 2013 29 6,776 1,030,226

6 28 Jul 2013 36 7,658 1,029,070

7 7 Nov 2012 17 12,924 1,028,410

8 29 Jun 2013 33 6,852 1,028,156

9 2 Jul 2013 36 7,308 1,027,886

10 29 Jun 2013 37 5,046 1,027,864

11 2 Jul 2013 34 7,854 1,027,202

12 29 Jun 2013 39 4,548 1,026,580

Average: 7,218

Regional Coincident Peak Demand (RCPD) by Connection Location

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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.

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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.

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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.

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Publish Prices

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