<p dir="ltr">The Net Zero Australia (NZAu) Project is a partnership between The University of Melbourne, The University of Queensland and Princeton University. The NZAu Project is intended to be rigorous and granular, evidence driven, technology neutral and non-political in its approach. Our modelling:</p><ul><li>uses a scenario-based approach;</li><li>uses the best available inputs and assumptions;</li><li>uses a least cost optimization approach; and</li><li>‘downscales’ our results to a regional and sub-regional basis.</li></ul><p dir="ltr">Phase 2 of the NZAu Project is focused on:</p><ul><li><i>tracking </i>how the Nation is performing relative to what is needed;</li><li><i>analysing </i>major aspects of the decarbonisation challenge with sufficient depth and rigour for policy development and planning;</li><li><i>making practical recommendations</i> that can achieve deep decarbonisation while acknowledging environmental and social objectives and trade-offs; and</li><li><i>translating </i>these recommendations more strongly into policy, planning, investments and, ultimately, operational projects.</li></ul><p dir="ltr">Given the large, uncertain and unprecedented changes that are required to achieve deep decarbonisation, there will inevitably be different views on the plausibility of projections made by ourselves and others. Rather than seeking consensus on all aspects of our modelling, the NZAu Project therefore intends to develop and present a methodology that is transparently defined, appropriate for the task and based upon input assumptions that are stated clearly and from authoritative sources. </p><p dir="ltr">This <i>Methods, Assumptions, Scenarios, and Sensitivities (MASS) </i>report therefore describes our modelling methods and its input assumptions and <i>does not present results</i></p>