Fostering a sustainable future for Aotearoa New Zealand through geothermal
Our Mission Statement
To represent New Zealand’s geothermal community by promoting the legacy, sustainability, and benefits of geothermal for Aotearoa
- Networking to build lasting relationships for our members
- Leading discussion on the merits of geothermal with government and industry
- Developing co-operation between industry sectors for the benefit of Aotearoa New Zealand
- Being a cornerstone of the international geothermal community through strong connections
- Building lasting partnerships with Māori
- Nurturing new ways of using geothermal through connecting people, ideas and skills
- Supporting business cases that promote the sustainable use of geothermal energy
- Identifying and promoting geothermal opportunities to energy intensive industries
- Continuing to promote New Zealand’s geothermal capabilities
- Forming solid relationships with central and local governments
- Promoting the Aotearoa New Zealand geothermal story as a path to net zero-carbon
- Being a non-partisan voice on the merits of geothermal
- Ensuring open dialogue is achieved when new regulations are being proposed
- Advocating for sustainable resource management and protection of our unique taonga
- Increasing knowledge of the benefits of geothermal
- Facilitating geothermal seminars, talks and workshops that span all things geothermal
- Fostering the next generation of geothermal enthusiasts through networking and mentorship
- Celebrating the value, culture, and stories of geothermal taonga for Māori
- Providing forums for training and upskilling of geothermal for Aotearoa
What We Do
We deliver geothermal leadership by:
- Linking people and projects by promoting geothermal research and employment opportunities
- Serving as a forum for the exchange of quality and unbiased information
- Encouraging and supporting geothermal research
- Ensuring regular conversations between Government and industry
- Influencing decision making through informed and impartial advocacy into New Zealand’s geothermal legislation, policy and regulations
- Responding to enquiries from the public and international community and connecting the right information with the right people
- Future proofing the industry by engaging young talent and connecting with the new generation of geothermal specialists
- Collaborating with national and international governmental, institutional and private agencies for the sustainable development of geothermal resources.
- Growing expertise and building capacity by providing or sponsoring topical seminars, workshops and training opportunities
- Promoting good practice guidance
- Producing strategic papers to inform and better position the geothermal industry
Paul Siratovich - President
Director - Upflow Limited
Paul has worked in the geothermal industry since 2009. He has worked on many of New Zealand s geothermal fields as a geologist and project manager. He has a background in exploration and development geology, a Master's degree in geothermal energy and, a PhD in geology.
Paul has a diverse publication record, serves on the global WING team, and serves as an Adjunct Senior Lecturer at the University of Canterbury Department of Geological Sciences.
Katie McLean - Vice President
Reservoir Engineer - Contact Energy,
Representative - Women in Geothermal WING
Katie is currently a reservoir engineer working for Contact Energy at Wairakei, New Zealand’s oldest geothermal power station. She is an engineer and a geologist by training, with an interest in renewable energy, and so naturally made the move to New Zealand to work in the geothermal industry.
Katie has a PhD in geothermal well testing from the University of Auckland. She has published papers on a range of reservoir engineering topics, and more recently on the subject of carbon emissions from geothermal. She has co-authored a textbook on geothermal well testing with Dr Sadiq Zarrouk, of the Geothermal Institute at the University of Auckland.
Jaime Quinao - Treasurer
Reservoir Engineer - Ngati Tuwharetoa Geothermal Assets Ltd. (NTGA)
Jaime is currently the Senior Resources Engineer or Kaipuukaha for Ngati Tuwharetoa Geothermal Assets Ltd. (NTGA) in Kawerau, a world-leading geothermal energy supplier for industrial direct heat use. In his role at NTGA, he enjoys the challenges and opportunities at the intersection of resource management, steamfield operations, resource and environment sustainability, and stakeholder engagement in support of geothermal energy development in the Kawerau Industrial Complex.
Jaime has over 11 years of geothermal resource management and reservoir engineering experience, starting as a reservoir engineer at Chevron Geothermal fields in the Philippines in 2007. He joined the New Zealand geothermal community in 2010 as a reservoir engineer for Mercury and moved to NTGA in 2017 to pursue his interest in geothermal direct heat use. He completed a Bachelor of Science in Chemical Engineering at the University of the Philippines in 2007 and a Master of Engineering in Engineering Science at the University of Auckland in 2016, studying a framework for uncertainty analysis of geothermal numerical models.
Samantha Alcaraz - Secretary
Geothermal Geology and Modelling Team Leader - GNS Science
Samantha is a geologist by background, with a specialisation in geomatics, and has been the GNS leading expert in geothermal data management, GIS and 3D Geoscience Modelling for the last 11 years. Samantha has a key centralising role within multi-disciplinary teams to gather data and create integrated geoscience models, which gives her a broad understanding of the values brought by different disciplines in understanding the geothermal resources. During Samantha's career, she has worked on many projects in New Zealand and overseas, including Japan, Taiwan, Philippines, Ecuador, Brazil, Montserrat, Reunion and France.
Whilst her daily work mostly focusses on high enthalpy geothermal resources, she has a strong interest in direct uses and a wish to optimise the use of our resources for the benefit of our communities.
Samantha is currently the Treasurer of the Asia-Western Pacific Regional Branch (AWPRB) of the International Geothermal Association (IGA).
Stephen Daysh - Immediate Past President
Director - Mitchell-Daysh
Stephen Daysh is a Director of Mitchell Daysh Limited, a specialist environmental consulting firm and has over 30 years environmental consulting experience in New Zealand, Asia and the Pacific. His primary specialty is the project management of social and environmental impact investigations and consenting processes for energy and infrastructure facilities and developments.
In the geothermal sphere Stephen managed the consenting team for the exploration and development phases for the Wayang Windu and Kamojang II geothermal projects in Indonesia in 1995 and 1996. He was the lead consultant for the successful re-consenting of the Ohaaki and Wairakei geothermal plants in New Zealand. Through the 2000's he managed the consenting processes for Contact Energy's Te Huka, Te Mihi, and Tauhara II geothermal development projects near Taupo, and was the decision-maker for the Takara Geothermal exploration programme in Vanuatu in 2016.
Mike Allen - Board Member
As we all recognise, these are challenging times for the energy sector and the geothermal industry more broadly. While Mike have been associated with geothermal activities for more than 40 years, much of his experience has been in helping deliver New Zealand experience and expertise into international projects. The establishment of Geothermal New Zealand Inc (GEONZ) in 2012 provided a platform to explore a more substantial role for the NZ industry overseas: though this has had mixed results, Mike believes it continues to help maintain our position in a number of markets, reinforcing contacts at industry, project and government levels. He also has involvement in the broader renewable energy sector through IRENA and programmes for MFAT and can offer a pragmatic view of how geothermal fits within this wider sector.
Over the last 18 months Mike has had the opportunity to work closely with the New Zealand industry in putting together a national presence for the WGC and through these efforts we have strengthened the connection between NZGA and GEONZ. He has been impressed with the reinvigoration of NZGA activities that the current board has brought to bear and this will ensure strong support for the industry going forward. His interest in joining the board is to reinforce this renewed approach of the NZGA, offer his international commercial experience and connections and ensure that the membership continues to be provided with personal and business development opportunities as appropriate.
Aroha Campbell - Board Member
Tauhara North No.2 Trust
Aroha is the longest standing Trustee of 30 years with Tauhara North No.2 Trust – Matua Board and currently holds the internal position on the Financial Audit & Risk & Policy Sub-Committee; a director on the Kai Whenua (Food & Land), Charitable Company Limited, Rotokawa Joint Venture with partners Mercury and the Chair of Waiariki Woman’s Refuge.
During her 11 years as CEO for Tauhara North No2. Trust, a sound foundation has been established for the owners and descendants ensuring their mission “Kia mau ki te whenua” Hold fast to the land, “Whakamahia te whenua” Make use of the land “ Hei painga mo nga uri whakatipuranga” For the future generations. This korero was given to them by Aroha's grand uncle Tete Mihinui from her dad’s whakapapa and Nanny Kurupai Whata from her grandmother’s whakapapa.
Aroha is very passionate about giving back to the Marae within the rohe of Ngati Tahu – Whaoa, assisting in community Trusts at a governance level and providing strategic insight, support and advice for community and indigenous groups around the world looking to develop their own geothermal projects or wishing to collaborate with partners on geothermal developments. She gets excited in creating an environment when interacting and listening to people and motivating them to find solutions and seeing their satisfaction and smile.
Aroha believes as a board member she can offer a Maori point of view in geothermal and walk a parallel pathway with a professional acumen.
Scott Henderson - Board Member
Principal Engineer - Generation - Jacobs
Scott began his career as a process engineer in an Oil & Gas consultancy in the UK in 1997. His introduction to geothermal came upon arrival to New Zealand in 2004 when he began with SKM (now Jacobs) as a geothermal process engineer and project manager, leveraging the obvious synergies from his O&G background.
Early career highlights were delivering process engineering for the Polaris San Jacinto project, and then later on as lead process engineer for Jacobs scope in the Kawerau project and design manager for Jacobs scope in the Nga Awa Purua project. More recently he has been heavily engaged in delivering a program of large mid-life, sustaining capital, engineering design works to Chevron geothermal which rounded off his appreciation of the different facets of geothermal development and began to look beyond the nuts & bolts of design. In parallel with this technical progression, he has worked through many roles from project manager (large consulting projects and med sized capital projects), through to operations management and latterly client account management and business development.
He is currently the Jacobs Client Account Manager for the New Zealand Power & Industry business.
Ted Montague - Board Member
Technical Advisor - Contact Energy Ltd
Ted has a MSC in Geology (University of Canterbury) and a MSC in Mineral Economics (Colorado School of Mines).
Ted has worked on geothermal projects since 1997, in the sectors of exploration, development, drilling, construction, economic valuations, contracting, and electricity markets. He has worked on projects New Zealand as well as Indonesia, the USA, and Chile.
He has held roles in the NZGA periodically since 1999.
Jacqui Nelson - Board Member
Chief Generation Officer - Contact Energy Limited
As Chief Generation Officer at Contact Energy, Jacqui has responsibility for operations and energy market trading. She has worked for Contact Energy since 2004 and has held a diverse range of roles including six years as Treasurer, Head of Land, Environment and Consenting, and Head of Electricity Markets. As Chief Generation Officer she provides strategic and operational leadership to her teams to optimize the performance of our generation assets to deliver ~ 80% of Contact’s EBITDAF and she also manages Contact’s largest cost budget. She is passionate about seeking truly sustainable partnerships with stakeholders and take an intergenerational view on Contact’s activities and their impacts.
Her passions lie in the people she connects with. She takes great pleasure in creating an environment in which the people she interacts with are motivated to be their best selves and to add value. She recently featured in an international Women in Energy series on women from around the world who have shown “exemplary leadership” and is keen to promote women supporting women and improve female participation in the energy sector.
She grew up in Southland and holds a BSc (Chemistry). She is a member of INFINZ, the Institute of Directors, and Global Women Associates and a Trustee of the New Red Cross Foundation, which has $60 million under investment, and also Chair and Trustee of the Performance Arcade.
Jeremy O'Brien - Board Member
Business Manager - Geothermal Energy - Seequent Limited
Jeremy has been involved in geothermal development since 2008. Jeremy's career began working for Mighty River Power (now Mercury Energy), developing and managing the Ngatamariki, Rotokawa and Mokai geothermal fields along with exploration prospects within the Taupo Volcanic Zone.
Jeremy’s experience has focussed on building robust development and management strategies for both geothermal and oil and gas resources. This has taken Jeremy across the globe covering the Asia Pacific region, US, Middle East, Sub Saharan Africa, Europe and Russia.
Jeremy now leads Seequent’s global geothermal team based in Christchurch, New Zealand.
Jamie Potter - Board Member
Reservoir Engineer - Mercury
Jamie is a Reservoir Engineer at Mercury NZ for Ngātamariki and Mokai geothermal fields, as well as the Modelling Lead managing the reservoir modelling for Mercury. She is also the Country Ambassador for New Zealand for Women in Geothermal (WING). She has held various roles in the energy industry occasionally since 2011.
Jamie has experience in geophysics, engineering, and reservoir modelling and has a master’s degree from Massachusetts Institute of Technology. In her current role, she focuses on the sustainable management of reservoirs.
She is passionate about efficient energy use, specifically about using what is appropriate and how to best meet our society’s energy needs, and is excited about the many opportunities for geothermal including carbon sequestration.
Leighton Taylor - Board Member
Mechanical Engineer – MTL NZ
Leighton’s professional experience to date has been undergraduate work experience on New Zealand’s steamfields; a Masters Thesis in low temperature geothermal binary plants; design work at MTL for overseas steamfields projects; attending and presenting at geothermal conferences on both geothermal generation and steamfield design.
Leighton is committed to the belief that geothermal energy will play a significant role in achieving New Zealand’s carbon neutral goal. To become a member of the NZGA board is an opportunity to contribute towards the development of the geothermal industry and to shape how geothermal fits into the carbon neutral future of New Zealand. Leighton will bring both enthusiasm and experience to the NZGA board.
Brian White - Board Member
Senior Energy Advisor – East Harbour Energy
Mechanical Engineer and Geothermal Institute Graduate Brian has worked across a wide range of roles within the geothermal industry over the last 40 years. He has an interest in where the industry has come from. Through East Harbour his focus is on enabling geothermal development both in New Zealand and internationally, including working closely with MFAT and World Bank. He has also worked within the New Zealand Government on broader energy market issues.
He has had NZGA Board involvement since 2001 including as the inaugural Executive Officer for the Association until 2016 when the role was discontinued.
Sadiq Zarrouk - Board Member
Associate Professor, Geothermal Engineering - University of Auckland
Sadiq J. Zarrouk is an Associate Professor of Geothermal Engineering and the course director for the Postgraduate Certificate in Geothermal Energy Technology at the Department of Engineering Science, The University of Auckland.
Sadiq has extended research and commercial field experience in geothermal and reservoir engineering with more than 25 years of experience in geothermal energy training and research. In 2007 Sadiq was instrumental in the restart of the geothermal training programme at the University of Auckland.
Sadiq has worked on 41 geothermal fields around the world. His role was to assess the resource, well targeting, analysis of the performance of wells and reservoir modelling. He participated in several due diligence projects included the geothermal engineering aspects of the field development (steam field equipment, flow measurements, two-phase flow, power stations equipment, heat exchangers and direct use). Sadiq also runs many professional training courses and has provided expert evidence on several occasions.
Sadiq has an applied approach to geothermal energy research with ongoing collaboration and joint publications with several universities and research institutions in Belgium, Germany, Iceland, Indonesia, Iran, USA, Canada, Japan, Kenya, Philippines and Australia with more than 150 publications in journals and conference proceedings, three patents and two books.
Sadiq is an elected member of the board of directors of the International Geothermal Association (IGA) 2013-2020 and the New Zealand Geothermal Association 2011-2017. He is a member of the organising committee of the New Zealand Geothermal Workshop (NZGW) since 2006 and an Associate Editor in Geothermics since 2020.
Kennie Tsui joined the New Zealand Geothermal Association as Chief Executive Officer in July 2021. Prior to this, she was the Principal Analyst at the Climate Change Commission, and was heavily involved with developing the recent report “Ināia tonu nei: a low emissions future for Aotearoa”. Tabled in Parliament in June, this report provided recommendations to the Government on climate change action in New Zealand. She has also held previous positions at the Ministry for Business, Innovation and Employment. A chemical and process engineer by training, and also holding an MBA qualification, Kennie has a wealth of knowledge across the energy sector built during her professional roles and directorships, as well as strong working relationships with central government. She is based in Wellington, New Zealand.
NZGA Co-ordinator and Board Administrator
Jess has been working for the NZGA since early 2020 in both an administrations and communications capacity. Prior to NZGA, she spent some time in the hospitality and events industry in both Aotearoa New Zealand and overseas. Her involvement in the geothermal sector quickly connected as being based in Rotorua and her passion for a world-class sustainable future for Aotearoa New Zealand. Jess gained a Bachelor degree in Mathematics and her eclectic skill-set also sees her tutoring maths, assisting sustainability centres, and conducting the Rotorua District Choir.
The NZGA was formed following a meeting of a group of geothermalists at the Geothermal Institute of the University of Auckland in October 1992. This group wanted to bring the geothermal industry together to promote and advance geothermal in New Zealand and connect internationally.
Some of this group had also been responsible for formation of the International Geothermal Association (IGA), which had been formed after a meeting of geothermal industry representatives at Wairakei on 14 October 1986; it was incorporated in New Zealand on 21 July 1988, with Prof. Derek Freeston as Secretary and remains registered as an Incorporated Society in New Zealand.
The inaugural meeting of the NZGA was held at the Geothermal Institute of the University of Auckland on 3 November 1992. At the meeting IGA affiliation and Incorporation of the NZGA were presented followed by planning of future activities:
A mid-year (1989) Wairakei seminar
The Geothermal Workshop preparations for 10-12 November 1993
Participation in the 1995 World Geothermal Congress
The original Board was:
- Ian Thain – President
- Derek Freeston – Secretary
- Tony Mahon – Vice President
- Neville Dench
- Tom King
- Arnold Watson
- Jim McLeod
- Trevor Hunt
The NZGA was incorporated in New Zealand on 21st October 1992; it was Affiliated with the IGA at the same time.
Meeting of geothermalists at Wairakei in 1988; the meeting that led to formation of the IGA and subsequently NZGA
Records are available from the Societies website from 1992. The first record is a change of the Bylaws; these were in fact the original Bylaws.
How We Work
The NZGA is a not-for-profit voluntary organisation, chartered as an incorporated society.
The Association consists of our members, the Board of Directors, including the president,vice president, treasurer and Secretary) and non-voting observers. The Board of Directors governs the affairs of the Association, and is elected its Annual meeting.
Committees may be established to progress matters of interest to the Association.
The NZGA is an affiliated member of the International Geothermal Association (IGA) and of the Royal Society of New Zealand (RSNZ). We also work very closely with other industry groups including the Geothermal Heat-pump Association of New Zealand (GHANZ), the Geothermal Institute, and Geothermal NZ Inc.
"The NZGA Board provides coordination, but it is our membership across all areas of the industry who actively work behind the scenes to make connections and drive priority actions."
– Stephen Daysh, Immediate Past President