Member Companies
Corporate and Institutional Members
The following companies generously support the NZGA.
Gold Level
Click on a logo to read the member's profile
Contact is one of New Zealand’s largest energy generators and retailers. They have 11 power stations across Aotearoa New Zealand, using geothermal, hydro and thermal energy to generate electricity.
They’re committed to leading the decarbonisation of Aotearoa by increasing renewable energy generation and working to make all our operations net zero by 2035.
They’re passionate about supporting a secure supply of energy and resilient electricity network so New Zealanders have a sustainable and reliable supply of energy for generations
to come.
Earth Sciences Institute is Aotearoa New Zealand’s leading geoscience research organisation. We are dedicated to advancing knowledge of the Earth’s geology, energy, hazards and risks. Our research and technical services support sustainable resource development, economic growth and keeping communities safe.
Our scientists are globally recognised for their innovative, high-quality geoscientific research and expertise in geothermal energy and material sciences.
As a Public Research Organisation, the Earth Sciences Institute plays a pivotal role in shaping policy, industry standards and as well as building national capabilities and collaboration. Our work with government, industry and iwi fosters innovation and meaningful partnerships built on sustainably developing New Zealand’s world-class resources.
Mercury is a proud New Zealand company which generates electricity from 100% renewable sources and is a leading multi-product utility retailer. As an electricity generator, the company has 21% of the market produced by 9 hydro stations, 5 geothermal stations and 5 wind farms. As a retailer, it has about 860,000 customers buying electricity, gas, broadband and mobile phone connections. The company continues to invest in new, renewable energy development, as well as refurbishing existing generation assets. Mercury has about 1,500 permanent employees nationwide and about 69,000 shareholders, which makes it the most widely owned business in the country.
Top Energy is a Consumer Trust owned electricity generation and lines network Group serving the Far North region of New Zealand. As a major infrastructure provider, the company manages and maintains 4,500km of power lines, 13 substations and over 6,000 transformers, delivering electricity to 34,000 homes and businesses from North Hukerenui to the Cape.
With assets exceeding $900 million and a workforce of over 180 staff, Top Energy is one of the region's largest employers and key economic drivers. The company's commitment to community development extends beyond infrastructure maintenance, positioning itself as a catalyst for regional economic and social growth and prosperity.
Silver Level
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Tūaropaki Trust is a Māori land organisation with an asset base of over $1 billion. The Trust was formed by 297 families amalgamating their land in the 1950's. Beginning in sheep and beef farming, the Trust was an early developer of geothermal power and now has a diverse business portfolio including hydrogen energy production, a geothermal power station, engineering and drilling services, native plant nursery, sustainability centre, as well as dairy, beef and sheep farming. At the core of this organisation is a desire to drive prosperity for their owners and their families, so there is a strong focus on whānau, the future and sustainability.
Ngāti Tūwharetoa Geothermal Assets Limited (NTGA) is a wholesale steam and brine supply business owned by Tūwharetoa mai Kawerau ki te Tai. NTGA is driven by the deep cultural connection between Tūwharetoa mai Kawerau ki te Tai and the geothermal ngāwhā that lie within ancestral lands. These geothermal assets are not only regarded as natural resources but are also integral to the iwi's heritage, spirituality and guardianship principles (kaitiakitanga).
We specialise in the development, management and commercialisation of geothermal energy, supplying geothermal process steam to our customers in the Kawerau Industrial Complex which is used in the production of:
• Dried timber - two international scale sawmills use geothermal for their timber drying.
• Kraft pulp - our steam is used along with biofuel in the production of kraft pulp in Kawerau.
• Tissue products - tissues, handy towels and toilet paper.
• Dairy milk products.
• 100 MW of electricity production.
Bronze Level
Institutional Members
Affiliated Organisations
