The Capital Expenditure Input Methodology sets out the requirements Transpower follows when preparing major capital proposals and the criteria the Commission uses to review and approve a major capital proposal.
Grid Upgrade Proposals
A grid upgrade proposal (GUP) is a proposal for major capital investment in the national grid that Transpower prepared under the Electricity Governance Rules and submitted to the Commerce Commission or the former Electricity Commission for approval. After 31 January 2012, Transpower submits major capital proposals instead of the grid upgrade proposals.
Individual Major Capital Proposals
Potential Capital Proposals under development: |
||||
| Name | Estimated Cost ($millions) | Indicative Application Date | Indicative Approval Date | |
| Upper South Island Grid Upgrade stage 1 |
$5 |
Jun-12 | Sep-12 | |
| Timaru Substation Development | $8 | Jul-12 | Sept-12 | |
| Wilton 110 kV bus rationalisation | $10 | Oct-12 | Jan-13 | |
| Upper North Island Reactive Support | $60 |
Dec-12 |
April-13 |
|
| Upper South Island Stage 2 | TBA | Apr-13 | Jul-13 | |
| Waitaki Transmission Development |
$20 |
2013 |
2013 |
|
| Lower North Island renewables |
$135 |
2013 |
2013 |
|
| HVDC pole 2 capacity upgrade | $151 | 2014 | 2014/15 | |
| BPE-WIL A reconductoring (WIL-JFD section) | $20 | 2015 | 2015 | |
Grid upgrade proposals being reviewed by the Commission: |
||||
| Name |
Proposed Cost ($millions) |
Application Date | Indicative Approval Date | |
| Otahuhu Substation Land Purchase | $6.783 | 16-Jun-11 | Jun-12 |
|
| Bunnythorpe Haywards A and B lines conductor replacement investment proposal | $130.5 | 13-Dec-11 | May-12 | |
Approved grid upgrade proposals: |
||||
| Name | Maximum Approved Cost ($millions) |
Application Date | Approval Date | |
| Kaitaia Capacitor Bank Project Overspend | $2.848 | 29-Mar-2011 | 21-Jun-11 | |
| HVDC - increase in interim grid expenditure | $8.0 | 14-Jun-11 | 25-Aug-11 | |
| Kawerau generation export enhancement investment proposal | $9.5 | 23-Dec 11 | 18 Apr-12 | |
Approved Grid Upgrade Plans are available in the online Archive.
Historic Grid Upgrade Plans assessed by the Electricity Commission
Grid upgrade plans assessed by the Electricity Commission prior to 1 November 2010 are held on the Electricity Authority website.
