Publications and resources
Resources search
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2019/20 Annual Report and Review
Our 2019/20 Annual Report is a print-friendly PDF file that includes our corporate governance and financial statements,...
- 29 September 2020
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Transpower Annual Report 2019-20.pdf [ pdf 5.16 MB ]
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Earth Potential Rise (EPR) Mitigation Information Sheet
In the rare event of a lightning strike or fault on the transmission line, towers or poles may transfer high voltage and dangerous currents into the ground for a very short instant. This is...
- 05 May 2020
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Earth Potential Rise Info Sheet.pdf [ pdf 1.46 MB ]
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Transmission Planning Report 2019
Transpower regularly publishes a Transmission Planning Report (TPR) which details the grid asset capability over the next 15 years. ...
- 22 January 2020
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Transmission Planning Report 2019.pdf [ pdf 6.89 MB ]
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Distributed BESS in New Zealand – Power System Operational Implications – Technical Report
Advances in battery technology are expected to play an important role in enabling our energy future. Distributed Battery Energy Storage Systems (BESS) in New Zealand examines the operational...
- 02 July 2019
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2018 Transmission Planning Report
Transpower regularly publishes a Transmission Planning Report (TPR) which details the grid asset capability over the next 15 years. ...
- 04 February 2019
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Transmission Planning Report 2018 - FINAL - 22 Nov 2018.pdf [ pdf 16.9 MB ]
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Transmission Tomorrow- Our Strategy 2018
Transmission Tomorrow - Our Strategy 2018 sets out our vision of New Zealand's electricity industry over the next 5 - 40 years.
- 01 February 2019
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Transmission Tomorrow - Our Strategy 2018 [ pdf 9.61 MB ]
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Value of Lost Load (VoLL) study
We have undertaken an investigation of the Value of Lost Load (VoLL) to inform our expenditure decisions and regulatory applications. ...
- 21 November 2018
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Value of Lost Load (VoLL) Study - June 2018.pdf [ pdf 2.23 MB ]
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Asset Management Plan 2018
A supporting document to our 2018 Integrated Transmission Plan, the Asset Management Plan explains how we undertake asset management.
- 30 October 2018
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Asset Management Plan 2018.pdf [ pdf 19.79 MB ]
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Grid Outputs Report 2018
This report builds on the 2017 Services Report, describing the grid output measures for our regulated transmission business for the third regulatory control period (RCP3) of...
- 30 September 2018
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Grid Outputs Report 2018.pdf [ pdf 3.38 MB ]
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Auckland Strategy Final Report
Auckland is changing. Rapidly. Roads, housing, technology, industry and electricity. ...
- 12 September 2018
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Transpower Auckland Strategy Final Report DIGITAL.PDF [ PDF 1.49 MB ]
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