Technology exists today to transform the way people travel and access » goods and services » jobs and customers » friends and family » using low and net zero carbon renewable energy.

Retyna can help you navigate this evolving world of clean, connected and smart transport and energy systems.


Retyna is a specialist, independent consultancy focusing on electric vehicles and renewable energy for transport.

Whether you are thinking about electric vehicles for your fleet, how to create pragmatic policy when historical trends are uncertain predictors of the future, or want help to turn your idea into a strong application for EECA’s Low Emission Transport Fund, then get in touch.

Elizabeth Yeaman, Managing Director of Retyna, has a rare mix of technical, communications, and policy design and implementation experience.   She has worked in the renewable energy and transport fields for over 25 years in both the private and public sectors.

Retyna has strong linkages with other experts and loves collaborating with associates and clients to bring together a project team to deliver the best analysis, ideas and solutions.


Elizabeth Yeaman, Managing Director

Liz has worked in the transport and energy sectors for over 25 years.  Prior to founding Retyna in mid-2018, she was the General Manager Transport at the New Zealand Government’s Energy Efficiency and Conservation (EECA).  She led EECA’s Electric Vehicle Programme including the design and implementation of the Low Emission Vehicles Contestable Fund and the EV Information Programme.

Liz has a Master’s degree in Natural Resource Engineering and is a Fellow of Engineering New Zealand and a Member of the Chartered Institute of Logistics and Transport.

Andrew Campbell, Associate

Andrew has over three decades of expertise in vehicle power trains, specification and production of engine fuels, engine and system adaption for the use of non-traditional fuels.   He has international project experience in the adoption of electric vehicles including the development of supporting infrastructure and electric vehicle related standards.  He has undertaken techno-economic assessments and due diligence for energy projects at a national scale in a variety of countries.  He has a particular interest and experience in engineering-based start-ups and personally holds several patents.

Andrew has a Master’s of Engineering (Mechanical) degree.

Mette Hoé, Associate

Mette is an internationally recognised expert in green mobility, transport planning, policy making and system adaption for the use of non-traditional fuels, including in the urban logistics and heavy-duty vehicles sectors.  She is experienced in initiating and delivering innovative projects within the low emission mobility space, including facilitating partnerships between private sector operators,  local and central government.  Since 2016 she has been an advisor to the European Commission Sustainable Transport Forum and is a founding Board member of the Global EV Association Network.  Mette relocated from Denmark to New Zealand in late 2019.

Mette has a Master’s degree in Technology, Social Science and Sustainability.


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