Our vision: A world where NZ's energy system is fully aligned with our values and ambitions

The New Zealand

Energy Certificate System



The method and approach of the NZECS should be open and available for critical review and comment, in order to promote trust in the system and identify areas of weakness.



Building on transparency, all suggestions for evolution and improvement of the NZECS should be received equally; and the evolution of the system determined via an unbiased, evidence-based decision-making process.



The system should be run in the appropriate manner as to provide the best outcome, with the most efficient use of resources. The NZECS should aim to always maintain the right balance between a service that is great quality and great value-for-money.



The NZECS should seek to provide greatest value for its immediate stakeholders. Alignment with international systems is important to maximise future opportunities for system users and ensure robustness, but should not over-ride domestic requirements where a better outcome can be achieved for New Zealand stakeholders.

Continuous evolution

To promote transparency and visibility, the NZECS will continue to evolve to assist energy consumers and generators in this country to understand and access information about their energy consumption, and to support renewable generation.

The New Zealand Energy Certificate System is operated in accordance with a number of guiding principles

Chief Executive

Tim Middlehurst.

BBus; MSc - Sustainable Development.

Equal parts idealist and perfectionist, Tim founded the NZECS as a means to promote greater engagement amongst energy consumers on the topic of energy sustainability.  Primarily a product professional, Tim has significant experience in energy and capacity market operation, and the development of new energy technologies. Having worked in the inception of the European Guarantee of Origin market, Tim is well-versed on the value that  certification  systems can bring.

Tim's email  | Tim's LinkedIn


The New Zealand Energy Certificate System (NZECS) is governed primarily by the NZECS System Rules. These rules are designed to meet international standards for greenhouse gas reporting, and will be developed over time in conjunction with New Zealand system users to better meet our domestic ambitions. 

To request a copy of the NZECS System Rules please email contact@nzecs.co.nz.


© 2019 NZECS

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