This report reviews greenhouse gas emissions and climate change mitigation data and models used in Aotearoa New Zealand. The authors make some recommendations on modelling capacity, data availability and accessibility and oversight/synthesis of the different types of models used.

This document summarises the compelling case for developing a New Zealand ‘Climate Policy Modelling Initiative’ (CPMI). This initiative would coordinate and enhance delivery of modelling across multiple providers. This work is informed by several workshops that brought together economic modellers from a range of organisations.

As New Zealand joins with other countries to achieve net zero greenhouse gas (GHG) emissions, it will come under increasing pressure from changing economic opportunities, potentially disruptive new technologies, natural resource constraints, and evolving social and political drivers.