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
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Potential Capital Proposals under development: |
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|---|---|---|---|---|
| Name | Estimated Cost ($millions) | Indicative Application Date | Indicative Approval Date | |
| Timaru Substation Development | $8 | 2014 | 2014 | |
| Upper South Island Stage Grid Upgrade Stage 2 | TBA | 2013 | 2013 | |
| Waitaki Transmission Development |
$20 |
2014 |
2014 |
|
| Lower North Island renewables |
$135 |
2015 |
2015 |
|
| BPE-WIL A reconductoring (WIL-JFD section) | $20 | 2015 | 2015 | |
|
Major capex proposals being reviewed by the Commission: |
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| Name |
Proposed Cost ($millions) |
Application Date | Indicative Approval Date | |
| Bunnythorpe Haywards A and B lines conductor replacement investment proposal | $130.5 | 13-Dec-11 | Dec-13 | |
|
Approved grid upgrade proposals: |
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| Name | Maximum Approved Cost ($millions) |
Application Date | Approval Date | |
| HVDC - increase in interim grid expenditure | $8.0 | 14-Jun-11 | 25-Aug-11 | |
| Kaitaia Capacitor Bank Project Overspend | $2.848 | 29-Mar-11 | 21-Jun-11 | |
| Kawerau generation export enhancement investment proposal | $9.5 | 23-Dec-11 | 18-Apr-12 | |
| Upper South Island Grid reliability stage 1 | $4.99 | 29-Jun-12 | 11-Feb-13 | |
| Otahuhu Substation Diversity project MCA Amendment Application | $7.1 | 27-Sept-12 | 12-Apr-13 | |
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.
