Westpower

What Westpower does

Westpower Limited is a 100% community-owned electricity distribution business (EDB) and generator operating on the West Coast of New Zealand's South Island. Founded in 1992 via the Energy Companies Act, the company owns and operates the only electricity distribution network across Westland, Grey, and parts of Buller Districts, spanning over 2,000 kilometres of power lines across 18,017 square kilometres and serving more than 13,000 consumers. Peak demand on the network is 44 MW, with regional annual consumption of approximately 227 GWh. The network delivers electricity from Transpower's national grid connection points to end consumers, with electricity retailers selling directly to customers using Westpower's wires.

The company's core technical assets include the 7.6 MW Amethyst Hydro Power Station (commissioned June 2013, 88% owned via joint venture with Harihari Hydro Ltd, producing 50 GWh annually) and the planned 23 MW Waitaha Hydro Scheme on the Waitaha River ($200M, 120-140 GWh/year, Fast-track approved April 2026 in partnership with Poutini Ngāi Tahu). The Amethyst station features 0.5-second deflector governing enabling isolated running and remote black start capability from the Network Operating Centre in Greymouth. A Ripple Control system provides load management by switching hot water cylinder loads during peak demand.

Ownership is held by the West Coast Electric Power Trust on behalf of local consumers, with trustees elected every two years from the community. The company operates the ElectroNet Group of wholly-owned subsidiaries (Contracting, Technology, Asset Management, Lines, and Electrical) providing electrical engineering, contracting, and IoT-enabled network services throughout New Zealand. Revenue is generated through regulated network line charges, hydro generation sales, and ElectroNet services, with pricing disclosed under the Electricity Distribution (Information Disclosure) Requirements. Connection services are tiered by capacity (Basic, Moderate, High, Custom).

Name

Westpower

Legal name

Westpower Limited

Website

https://westpower.co.nz

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

11–50 employees

Short description

Westpower is a 100% community-owned regulated electricity distribution network operator on the West Coast of New Zealand's South Island, serving over 13,000 consumers across 18,017 square kilometres via 2,000+ km of power lines, with co-owned hydroelectric generation assets (Amethyst Hydro) and the approved Waitaha Hydro Scheme in development.

Ownership category

akta.pro rank

Product category

Electricity Distribution

NAICS

Electric Power Distribution (221122), Hydroelectric Power Generation (221111), Electric Power Transmission, Control, and Distribution (22112)

SIC

Electric Services (4911), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Public Power Districts & State/Provincial Utilities (EUADABAD)

akta.pro secondary industries

Hydropower Operations, Maintenance & Asset Management (O&M, Spares, Performance) (EUAMADAE), Hydropower Project Development & Permitting (Greenfield, Licensing, Water Rights) (EUAMADAA)

Keywords

• Electricity distribution
• Power network
• Utility services
• Community energy
• Grid operations

Headquarters

HQ city

Greymouth

HQ country

New Zealand

HQ region

Oceania

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Pricing tiers

Distribution channels4 records

Marketing channels5 records

Core offering

Westpower is described in the available input as a community-owned electricity distribution company operating in New Zealand. No further detail about specific products, service lines, or operational scope is provided in the source material.

Product overview

Westpower is a community-owned electricity distribution company operating a network across the West Coast of New Zealand's South Island. Its core offering is the electricity distribution network serving over 13,000 consumers across 18,017 square kilometres. The company also owns generation assets including the operational Amethyst Hydro Scheme (7.6 MW) and the developing Waitaha Hydro Scheme (23 MW planned). Through its ElectroNet Services subsidiary, it provides electrical contracting, asset management, and lines services. The product portfolio centers on reliable electricity distribution, supported by renewable hydroelectric generation and distributed generation connection services.

Differentiator

Problem solved

Functional benefit

Brands

• ElectroNet Group: Group of specialized electrotechnology companies offering electrical engineering, contracting, and innovative technology solutions throughout New Zealand, including ElectroNet Contracting, ElectroNet Technology, ElectroNet Asset Management, ElectroNet Lines, and ElectroNet Electrical.
• Amethyst Hydro Ltd

Quantifiable outcome

• Amethyst Hydro generates 50 GWh per year, powering 6,000 West Coast homes
• +6 more outcomes

Named customers1 record

Segments4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Poutini Ngāi TahucoreStrategic or Co-development PartnerWestpower and Poutini Ngāi Tahu (comprising Te Rūnanga o Ngāti Waewae and Te Rūnanga o Makaawhio, both hapū of Ngāi Tahu) are close partners in developing the Waitaha Hydro Scheme. Together they work to ensure the Waitaha River remains a taonga (treasure) for future generations. The partnership ensures the project reflects both environmental sustainability and cultural values, with both parties committed to long-term solutions for the community. This is a flagship co-development partnership for the $200 million Waitaha Hydro Scheme.
• Harihari Hydro LtdcoreStrategic or Co-development PartnerHarihari Hydro Ltd is a joint venture partner in the Amethyst Hydro Scheme. Westpower holds 88% ownership and Harihari Hydro Ltd holds 12% ownership in Amethyst Hydro Ltd, which owns and operates the 7.6 MW Amethyst Hydro Power Station commissioned in June 2013. The scheme was the result of 9 years of planning, design and construction with strong community support.
• TranspowercoreTechnology or IntegrationWestpower works with Transpower (New Zealand's state-owned grid operator) to ensure a secure supply of electricity to key Grid Exit Points across the West Coast region. This partnership is essential for connecting Westpower's distribution network to the national electricity grid and managing electricity supply resilience.
• ReGenerate NZminorImplementation/ SI/ Consulting PartnerReGenerate NZ based in Christchurch provides mechanical maintenance services for the Amethyst Hydro Power Station. Other West Coast-based contracting companies and technical specialists throughout New Zealand are also engaged in various activities at the station.
• ElectroNet GroupcoreStrategic or Co-development PartnerWestpower is the parent company for the ElectroNet Group of companies, which includes ElectroNet Contracting (providing transmission, distribution and electrical contracting services), ElectroNet Technology (IoT and smart network solutions), and ElectroNet Consulting. These subsidiaries offer electrical engineering, contracting, and innovative technology solutions throughout New Zealand.
• Department of Conservation (DOC)coreStrategic or Co-development PartnerThe Waitaha Hydro Scheme is situated within Department of Conservation stewardship land and requires concessions (approvals) for its development. Westpower has commissioned extensive ecological studies including aquatic ecology, native species conservation, and vegetation assessments in consultation with DOC. The project received fast-track approvals under the Fast-track Approvals Act following government announcement on 18 April 2026.
• West Coast Electric Power TrustcoreOthersThe West Coast Electric Power Trust holds shares in Westpower on behalf of local electricity consumers of the West Coast. Trustees are elected from the local community every two years, ensuring Westpower's stewardship remains grounded in community interests. Trust elections are held every two years with three members retiring in rotation.

Scale indicators10 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Powerco: Largest NZ EDB by line length and customer connections, operating gas and electricity networks across the North Island. Comparable as a regulated multi-region distribution utility but at materially greater scale and scope.
• Meridian Energy: NZ's largest renewable electricity generator and listed gentailer with significant hydro assets. Comparable on the generation side (hydro wholesale electricity) though operates at far larger scale and is investor-owned rather than community-owned.

Direct peers

• Alpine Energy: Consumer-trust-owned EDB operating in South Canterbury. Closely matches Westpower in trust-ownership, regional focus and regulated electricity distribution activity.
• Orion New Zealand: Larger Christchurch-based EDB operating a regulated distribution network on the South Island. Comparable in being a South Island, regulated distribution utility, though materially larger in scale.
• Network Tasman: Trust-owned electricity distribution business operating a regulated network across the Nelson/Tasman region. Closely comparable in size, customer count, community ownership structure and regulatory framework to Westpower.
• MainPower New Zealand: Consumer-trust-owned EDB serving the North Canterbury region with a similar community governance model and small regional scale. Directly comparable as a regulated distribution utility.
• Electra Limited: Trust-owned EDB serving the Horowhenua/Manawatu region. Another NZ consumer-trust EDB of similar size and structure, directly comparable in governance and regulated activity.
• EA Networks: Trust-owned EDB covering Mid Canterbury with distribution plus embedded generation. Comparable community-owned model, scale and combined distribution/generation profile to Westpower.

Emerging players

• Trustpower: NZ generator-retailer with a portfolio of small-to-medium hydro and wind assets. Comparable to Westpower's run-of-river hydro generation approach and community-trust heritage, though now privately owned by Infratil.

Others

• Transpower New Zealand: State-owned national grid operator that owns the HVDC inter-island link and Grid Exit Points feeding Westpower's distribution network. Closely intertwined with Westpower's operations as the upstream transmission counterpart.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/electronet-group
• Xx.com/westpowernz
• Facebookfacebook.com/WestpowerNZ

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Westpower