Member Companies

Corporate and Institutional Members

The following companies have generously supported the NZGA.
To view the company profiles please click here or onto the company logo:

Gold Level

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Silver Level

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Bronze Level

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Supporting Members’ Company Profiles

View supporting members’ company profiles below:

Gold Level

Tuaropaki Power Company Contact: Steve Murray, CEO Tuaropaki Trust Manager
Phone: +64 (0)7 376 2500
Mobile: +64 (0)21 241 2929
The Trust’s wholly owned subsidiary, Tuaropaki Power Company Limited (TPC) was established in 1994 for the sole purpose of generating and marketing electricity from the Mokai geothermal resource permitted to be used by the resource consents granted by Environment Waikato.

Mercury NZ Contact: Ian Richardson          Phone: +64 (0) 7  343 8536
Mercury NZ is a New Zealand electricity company, with a flexible portfolio of electricity generation assets, a strong national retail presence and a focus on domestic generation and international geothermal development opportunities. More than 90% of our generation is from renewable sources. We supply both electricity and thermal energy to major commercial users and have about 20% of New Zealand’s retail market with our brands, Mercury Energy, BOSCO Connect and Tiny Mighty Power. Mercury NZ is a world leader in geothermal energy development, construction and operation – leveraging this expertise with investment in geothermal energy development in the US, Chile and Germany through GeoGlobal Energy.

Mercury NZ won the 2010 Deloitte Energy Excellence Awards for Overall Energy Company and Project of the Year (Nga Awa Purua), and retail brand, Mercury Energy, currently holds the 2011 Deloitte Energy Excellence Award for Retailer of the Year.

GNS Science Contact: Brian Carey, Geothermal Manager
Phone: +64 (0)7 374 8211

geothermal web page
GNS Science is New Zealand’s leading provider of earth and geoscience research and consultancy services. Established as a Crown Research Institute in 1992. GNS Science operates as a company with a Board of Directors, with shares held by the New Zealand Government.

GNS Science focuses on understanding earth system processes and its resources, and translating these into economic and social benefits. These phenomena include geothermal and hydrocarbon resources; geological processes; earthquake, volcano, landslide and tsunamis hazard assessments’ climate change’ and geophysical sciences.

GNS Science clients include Government agencies; the World Bank; Asian Development Bank; geothermal and hydroelectricity operators, oil and gas exploration companies; regulatory authorities; mineral industries; engineering consultancies and other commercial entities.

Contact Contact: Ted Montague
Phone: +64 (0)4 462 1176
Contact is one of New Zealand’s largest electricity generators and energy retailers. We keep the lights burning, the hot water flowing and the BBQ fired up for over 560,000 customers across the country.Our power stations generate around 25 per cent of New Zealand’s electricity, we are one of the country’s largest wholesalers and retailers of natural gas, and we have around 47 per cent of the LPG market in New Zealand.

Top Energy Contact: Ray Robinson
Ngawha Plant Manager
Phone: +64 (0)9 405 2556
Top Energy is the local electricity generation and lines network company which supplies 30,000 electricity consumers in the Mid and Far North of New Zealand’s North Island. Now with a capacity of 25MW, the Ngawha Power Station’s output is fed into Top Energy’s network and then connected to the National Grid.

Silver Level

Ngati Tuwharetoa (BOP) Settlement Trust Contact: Spence McClintock: CEO
Phone: +64 (0)7 323 4192
Ngati Tuwharetoa Geothermal Assets is a wholesale Steam and Brine Supply Business currently supplying a mix of industrial customers in Kawerau.

Our steam is currently used in the production of:

  • Newsprint, all of New Zealand’s Newsprint is dried using only geothermal steam
  • Dried Timber, 2 International scale sawmills use geothermal for their timber drying
  • Kraft Pulp, our steam is used along with Bio Fuel in the production of Kraft pulp in Kawerau
  • Tissue Products, Tissues, Handy Towels and Toilet paper, dried using clean food grade steam created by heating clean water with geothermal steam
  • Electricity, our steam is used to generate approx. 30 Megawatts of electricity, enough for over 20,000 homes worth.
  • Future Opportunities

We hold environmental permits (Consents) to double our production from the Kawerau field.  We are looking for new customers.  We can provide a complete steam and brine supply service including:

  • Geothermal Steam Supply to the customers door, from 5 to 15 Bar
  • Geothermal Brine Supply to the customers door, from 100 to 150 degrees C
  • Clean Steam Supply to the customers door, from 5 to 15 Bar
  • Condensate Collection and Re-Injection
  • Brine Re-injection

Using geothermal steam and brine for process heat and electricity generation is a permitted activity within the Kawerau District.  Kawerau is an ideal location for Industrial processes due to:

  • The presence of existing large Industrial businesses which has created strong support services, e.g heavy engineering, spares supplies,
  • Located on a Rail line, only 100km from New Zealand’s largest deep water port (Tauranga)
  • Located on the Off Highway forestry road network that connects to over 200,000 hectares of sustainably managed plantation forest.
  • Available flat land zoned for Industrial use
  • Many Industrial activities already deemed to be permitted activities

Bronze Level

Tauhara North No 2 Trust Contact: Mana Newton, Tauhara North Group CEO
Phone: +64 (0)7 345 7534
We are the co-owner of the Nga Awa Purua Geothermal Power Station in a joint venture with Mighty River Power. The Rotokawa Reservoir part sits under land owned by Tauhara North No 2 Trust.

Ringa Matau Limited is the wholly owned subsidiary of Tauhara North No 2 Trust and performs all commercial activities for Tauhara North No 2 Trust.

Heavy Engineering Research Association (HERA)


Contact: Boaz Habib, General Manager of Industry Development
Phone: +64(0) 9 262 4753
Website the Research Association for the New Zealand metals engineering industry. Established in 1979 under the Heavy Engineering Research Levy Act of 1978 as a member-based, not-for-profit Research Association, HERA today serves over 600 industry members as their leading resources support centre. HERA undertakes research required to meet market expectations and links companies to market opportunities.

Key Projects:
HERA produces and maintains the Geothermal Capability Register, which details the geothermal supply chain capabilities of New Zealand companies.

HERA runs a research programme in the low enthalpy heat to electricial energy conversion area, which develops binary systems using the Organic Rankin Cycle aimed at exploiting hydrothermal resources.

Jacobs Contact: Greg Ussher
Phone: +64 (0)9 928 5991
Jacobs and Sinclair Knight Merz (SKM) combined in December 2013 to form one of the world’s largest and most diverse providers of technical professional and construction services across multiple markets and geographies and a leader in geothermal technology. Over the past 40 years, we have built our expertise and global capability in all aspects of geothermal exploration, development, power generation and direct use. We have worked on more than 100 geothermal resources, over 3,000 MW of generation, in over 20 countries, comprising more than one third of the world’s geothermal power generation capacity.

We provide the full range of technical skills to support our clients to take a geothermal prospect from initial reconnaissance, through exploration, appraisal, resource assessment, development and ultimately, into operation. This is important equally for us and for our clients to have the opportunity to develop a relationship that can support projects throughout the challenging process of developing projects. Our geothermal team provides a comprehensive range of services in geothermal energy development. Including:

• Geothermal reconnaissance and exploration investigations
• Reservoir engineering and resource assessment
• Environmental management
• Project preparation and development management
• Steamfield engineering (design, contract, documentation, construction supervision)
• Power plant engineering (design, contract documentation, construction supervision)
• Geothermal resource management
• Steam field and power plant operations and management
• Direct use applications (industrial processing, heating, space conditioning)
• Asset management
• Asset valuations and due diligence studies
• Project risk assessment
• Carbon financing
• Leader’s engineer / resource advisor

Fitzroy Engineering Group Contact: Mark Arnold, NZ Business Development & Marketing Manager
Phone: +64 (0)6 759 5334
Fitzroy Engineering Group is a long standing Taranaki based contractor to the oil & gas, energy, petrochemical and mineral industries, offering solutions based on our reputation for quality workmanship and technical expertise. We specialise in heavy fabrication, upstream and downstream installation and maintenance, repair and engineering, with a proven history of success with complex, time sensitive workscopes.

In New Zealand we operate from our head office and fabrication yards in New Plymouth and have a process design office in Auckland and a full API approved drilling tubular workshop and downhole tool rental facility in Taupo.

Fitzroy Engineering’s multi-disciplined offering includes: EPC Projects, Procurement, Project Management, Mechanical Design, Heavy Fabrication, Site Construction, Mechanical Contracting, Maintenance Services, Catalyst Handling, Shutdown Management & Support, Piping, Industrial Coatings, Rigging & Scaffolding, Machining (API).

Eastland Generation Contact: Gavin Murphy, General Manager
Phone: +64 (0)6 869 0711
Mobile: +64 (0)21 760 029
It’s not by chance that Eastland Group is positively booming in the first city to greet the new sun each day. There’s a freshness about this company that flows from the very top through to the staff and the surrounding Gisborne and East Coast communities.

Eastland Group is a collection of businesses that span the logistics, aviation and energy industries, with its heart in Gisborne but with bases throughout the nation. It’s a Gisborne based national company that firmly understands the need for a solid quadruple bottom line – one that is… economic; environmentally aware; socially responsible and culturally understanding.

Pukeroa Oruawhata Trust Contact: Malcolm Short, Chairman
Phone: +64 (0)7 348 8887
The Trust was established in 1981 for the purpose of administering the “township sections” on behalf of the beneficial owners of Ngati Whakaue.

Pukeroa Oruawhata Trust continues to monitor the use of lands donated by the tribe to the city and now administered by the RDC under an accord with Pukeroa Oruawhata Trust. These lands comprise gifted reserve land in and around the city. Central Government still retain the administration of the Whakarewarewa reserve. Pukeroa Oruawhata Trust is working through the Office of Treaty Settlements to ensure that these lands and others that rightfully belong to Ngati Whakaue are not alienated.

Whakarewarewa Thermal Village Tours LTD Contact: Jahvis Davis
Customer Services Manager
The Living Maori Village is set amongst the geothermal landscape of the Te Whakarewarewa Valley. See the Bubbling springs, Mud Pools, Steam Vents and Geysers that have become a normal part of everyday living. The Living Maori Village is an authentic and unique attraction where the villagers live, cook, clean and bath in the geothermal waters on a daily basis. Our guides are direct descendants of the guides who guided at the Pink and White Terraces over 150 years ago, this legacy is as important today as it was then.

MB Century Contact: Marcel Manders
Phone: +64 (0)7 376 0422
MB Century New Zealand is an industry leader. We have built our reputation on commitment to excellence, quality, superior equipment and a service culture. We are proud to offer our customers a variety of customised services and solutions under a “one-stop-shop.”

Our New Zealand business unit has unparalleled experience in geothermal investigation and development, having undertaken the investigative drilling of all major geothermal fields in New Zealand since 1949. These include Wairakei, Kawerau, Ohaaki, Rotokawa, Ngatamariki, Ngawha, Mokai, Tauhara, Reporoa, Rotoma, Te Kopia, Atiamuri and Waiotapu.

We employ an internationally recognised team of steamfield designers and engineers. We have extensive experience in the design and construction of geothermal steamfields, pipelines and pressure vessels. All designs are based on international codes that have been further developed as a consequence of our operational experience.

We also operate a comprehensive workshop facility, specialising in heavy fabrication and precision engineering. This service is complimented by an industrial blast and paint facility.

MB Century New Zealand is the leading provider of maintenance and overhaul services to the hydro and geothermal power general industry. We have successfully transferred our expertise in this area to general maintenance and overhaul services for other industries.

Our people are passionate about their work and go the extra mile to deliver for our customers, while maintaining a clear focus on safety.

Dobbie Engineers Contact: Greg Moore, Director
Phone: +64 (07) 348 5485
Mobile: +64 (0) 27 296 0214
Dobbie Engineers Ltd is an award winning mechanical engineering consultancy.  We have been delivering quality engineering results to New Zealand industries for over 20 Years.

Our conceptual design advice helps resource owners to obtain maximum returns from their assets and our detailed engineering of geothermal installations ensures their long term success.  Dobbie Engineers has successful working relationships with asset owners and major contractors working in NZ’s geothermal industry. Dobbie Engineers can provide conceptual design, detailed engineering and construction management for most geothermal energy applications.  Our particular areas of expertise include the following:

  • Geothermal steam field piping and phase separation plant
  • Industrial direct geothermal heat use applications including clean steam generation and direct heat generation
  • Well test equipment including output, corrosion and scaling test plant
  • Large scale commercial direct geothermal heat use for hotels, hospitals, commercial buildings and horticultural glass houses
  • Geothermal heating systems for swimming and bathing applications
  • Steam turbine selection and installation

AECOM New Zealand Contact: Warwick Cutfield,
Industry Director – Thermal & Geothermal
Phone: +64 (0)9 967 9286
AECOM is built to deliver a better world. We design, build, finance and operate infrastructure assets for governments, businesses and organizations in more than 150 countries. As a fully integrated firm, we connect knowledge and experience across our global network of experts to help clients solve their most complex challenges. From high-performance buildings and infrastructure, to resilient communities and environments, to stable and secure nations, our work is transformative, differentiated and vital.

It is the fusion of AECOM’s global reach with local knowledge that enables our New Zealand team to deliver innovative solutions, technical excellence and support the nation’s growth. No matter the project’s size or complexity, our people are well placed to enable our clients’ to achieve their vision.

See how we deliver what others can only imagine at

Downer Contact: Fraser Wyllie
Phone: +64 (0)27 602 5340
Downer is a company with a proud history that can be traced back to 1870. With more than 4500 employees located in over 50 towns and cities across New Zealand, Downer plays an integral role in keeping New Zealand’s essential infrastructure running.

We are a leading provider of engineering and infrastructure services to customers operating in market sectors including transport, water, energy, telecommunications and facility management. Qualities possessed by the company’s pioneers hold true today, with our team sharing a common vision underpinned by determination and integrity.

Downer is a leading supplier to the power, transmission and electricity distribution markets in the Asia-Pacific region, having provided integrated engineering, construction, commissioning and maintenance services for more than 50 years. We have successfully contributed to power plants totalling 10,000 mega watts and designed and installed 51,000km of transmission lines. Downer is committed to understanding, adapting and responding to the impacts of climate change. With one of the largest and most experienced electrical service providers in the renewable energy market in Australasia, the team has recently been involved in a number of wind farm, transmission line, hydro-dam and geothermal projects.

SGS New Zealand Contact: Phil Schunk
Phone: +64 (0)27 5241380
Our services enable you to operate in a more sustainable manner by improving quality and productivity, reducing risk, verifying compliance and increasing speed to market.

Whether you are developing products, projects, or processes, you need trusted independent inspection to ensure that both your legal obligations and the high standards you expect are met at every stage. Our comprehensive range of world-leading inspection services helps you to reduce risk, control quality and quantity, and meet all relevant regulatory requirements.

SGS Non-destructive testing ensures the safe and efficient operation of your equipment and assets by detecting defects before they result in severe damage, and assures compliance with international standards.

From construction sites, pipelines and refineries to shipyards and nuclear power plants, you need to monitor and improve the reliability of your processes and equipment. Our non-destructive testing (NDT) services offer you complete or sample examination of your assets, using well-designed procedures and highly trained and certified NDT inspectors. As a result, we can provide you with complete and valuable data, enabling you to make informed asset management decisions.

Halliburton New Zealand Contact: Nick Schischka
Phone: +64 (0)6 755 9240
Founded in 1919, Halliburton is one of the world’s largest providers of products and services to the energy industry. With more than 60,000 employees in approximately 80 countries, the company serves the upstream oil and gas industry throughout the lifecycle of the reservoir – from locating hydrocarbons and managing geological data, to drilling and formation evaluation, well construction and completion, and optimizing production through the life of the field.

Our Business
Halliburton consists of two divisions: Drilling and Evaluation and Completion and Production. As of December 31, 2010, these two divisions accounted for approximately 18.0 billion dollars in Revenue.

Geothermal Institute Contact: Dr Sadiq Zarrouk
Phone: +64 (0)9 373 7599 ext 85542
The Geothermal Institute is an umbrella for all the capabilities at the University of Auckland in geothermal energy training and research.

Bay of Plenty Regional Council Contact: Penny Doorman
Phone: +64 0800 884 881
Back in 1989, the Government took 25 organisations and turned them into the Bay of Plenty Regional Council. As caretakers of our land, air and water, Bay of Plenty Regional Council monitors the effects of human activities on our environment. We also promote the sustainable management of our natural and physical resources for present and future generations.

Bay of Plenty Regional Council’s work guides and supports the sustainable development of the Bay of Plenty. We want to make sure our region grows and develops in a way that keeps its values safe for future generations. A major focus of our work involves looking after the environment. We manage the effects of people’s use of freshwater, land, air and coastal water. However, we also have a broader responsibility with others for the economic, social and cultural well-being of the regional community.

Western Energy Services Contact: Dane Coppell
Phone: +64 (0)7 376 8145
Provider of well services to the geothermal, water, oil and gas industries.

Demeter New Energy NZ Contact: Jinsong Chen
Phone: +64 (0)278 485 988
Profile coming soon.

Allied Industrial Engineering Contact: Aaron Standen
Phone: +64 (0)7 323 8877
Profile coming soon.

Contact: Jeremy O’Brien
Phone: +64 (0)3 9611031
Masters of information ARANZ Geo is a responsive group focused on giving decision makers confidence in understanding geology. Our specialist solutions harness information to extract value, bring meaning and reduce risk. Founded in 2004, our global network includes offices in Africa, Asia and the Pacific, Europe, North America and Latin America. ARANZ Geo is the developer and owner of Leapfrog geological modelling software.

Leapfrog Geothermal is a workflow-based 3D geological modelling tool. It interfaces with industry leading reservoir engineering and geophysical software for rapid interpretation of geothermal reservoirs. Leapfrog’s 3D modelling and visualization brings clarity and understanding to the geothermal development lifecycle, reducing risk from exploration to field operation.”

Mitchell Daysh
Contact: Stephen Daysh, Director
Phone: +64 (0)6 834 4041
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Mitchell Daysh was formed in October 2016 through the merger of two mutually respected environmental consulting companies – Mitchell Partnerships and Environmental Management Services (EMS). As a combined entity, we offer a broadened skillset and expertise, with a project history that includes many of New Zealand’s landmark environmental projects.

We provide a wide range of environmental services including:
• Project planning and management
• Planning and development studies
• Policy statements and plans
• Demographic analysis
• Resource consent approvals
• RMA compliance audits
• Environmental impact assessment
• Environmental management systems
• Community consultation and social impact assessment

Mitchell Daysh has extensive experience in geothermal allocation policy, environmental, social and cultural values assessment and project development feasibility and consenting in New Zealand, Asia and the Pacific over the last 25 years. Some examples of this experience include:

• Environmental assessment and consenting for the Wairakei Geothermal Binary Plant (1991)
• Environmental assessment and consenting for the Wayang Windu and Kamojang Expansion Geothermal Development Projects (Indonesia 1995 to 1996)
• Preparation of a Geothermal Allocation Framework for the Waikato Regional Council (1997)
• Re-consenting of the Wairakei Geothermal Power Station (2001 to 2009)
• Environmental assessment and consenting for the Te Mihi Geothermal Power Station (2008); Tauhara II Geothermal Power Station (2010); and Ngatamariki Geothermal Power Station (2011 –2012)
• Decision-making assistance for the Takara Geothermal Project (Vanuatu, 2015)
• Advice to the government of Papua New Guinea on Geothermal Legislation and Policy Development (2014)
• Environmental assessment and consenting for the Ngawha Geothermal Power Station Expansion Project (2015 to 2016)
• Development of the Kawerau Geothermal Steamfield Management Plan (2016 to 2017)
We have also been instrumental in the development of the Geoheat Strategy for Aotearoa New Zealand and the Geothermal Heat Pump Association of New Zealand (