Westpower

Last updated

Westpower Limited
Company typePrivate
Headquarters
Greymouth
,
New Zealand
Area served
 West Coast
Services Electricity distribution
OwnersWest Coast Electric Power Trust (100%)
Website www.westpower.co.nz

Westpower Limited is an electricity distribution business based in Greymouth, New Zealand. The company owns and operates the electricity distribution network in the Westland and Grey districts, and part of the Buller District. The company is wholly owned by the West Coast Electric Power Trust. [1]

Contents

The company's distribution network consists of 2,300 km (1,400 mi) of lines, supplying electricity to approximately 13,700 customers. The network covers the towns of Reefton, Runanga, Greymouth, Hokitika, Ross, Franz Josef and Fox Glacier. [2]


Network statistics

Westpower Limited network statistics for the year ending 31 March 2024 [3]
ParameterValue
2024
Regulatory asset base$120 million
Line charge revenue$24.6 million
Capital expenditure$4.9 million
Operating expenditure$14.2 million
Customer connections14,326
Energy delivered230 GWh
Peak demand36 MW
Total line length2,187 km
Distribution and low-voltage overhead lines1,592 km
Distribution and low-voltage underground cables281 km
Subtransmission lines and cables313 km
Poles20,411
Distribution transformers2,536
Zone substation transformers22
Average interruption duration (SAIDI)208 minutes
Average interruption frequency (SAIFI)2.11

Generation assets

In August 2019 the company's proposed hydro project on the Waitaha River was denied a concession by the Department of Conservation. [4] In 2024 the project was scheduled in the government's Fast Track Approvals Act. [5]

Operational

NameTypeLocationCapacity (MW)Annual generation
(average GWh)		Commissioned
AmethystHydro Hari Hari, Westland7.6502013

Proposed / under construction

NameTypeLocationProjected capacity (MW)Status
WaitahaHydro Waitaha River, Westland23Proposed

References

  1. ↑ "Ownership | Westpower". www.westpower.co.nz. Retrieved 8 March 2021.
  2. ↑ "EDB Information Disclosure - Westpower Limited - year ending 31 March 2020" (PDF). 31 August 2020. Retrieved 8 March 2021.
  3. ↑ "Performance summaries for electricity distributors – Year to 31 March 2024". Commerce Commission. 8 July 2025. Retrieved 9 September 2025.
  4. ↑ "Waitaha refusal stuns Westpower". Otago Daily Times. 29 August 2019. Retrieved 3 January 2022.
  5. ↑ "Waitaha Hydro Project becomes possible through Fast Track Approvals process". Electronet. 7 October 2024. Retrieved 20 December 2025.


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