for Transmission (RIT-T). The RIT-T is a regulatory mechanism defined in the National Electricity Rules that applies an economic cost benefit test on new electricity infrastructure proposed for the National Electricity Market (NEM). According to the Australian Energy Regulator (AER): “The purpose of the RIT-T is to identify the credible option that maximises the present value of net economic benefit to all those who produce, consume and transport electricity rules.” The role of the RIT-T is to undertake a cost benefit analysis focusing on different technical solutions by looking in detail at engineering aspects, refining costs, considering alternate options, and staging. Regulatory Investment Test for Transmission (RIT-T) The RIT-T assesses the economic and technical impact of, and preferred timing for, all major network investments in the national energy market (NEM). The RIT-T process ensures regulated transmission investment decisions are in the long term interests of customers. The RIT-T process involves multiple stages, and culminated with the Project Assessment Conclusions Report, published in June 2021, which shows that Project Marinus satisfies the RIT-T. All RIT-T reports and associated documentation have been published on the Marinus Link website. Project Specification Consultation Report (PSCR) The Project Specification Consultation Report (PSCR) was published in July 2018. This report and the feedback it has received has been published on the Marinus Link website. Project Assessment Draft Report (PADR) The Project Assessment Draft Report (PADR) for Project Marinus was published in early 2020. The PADR takes into account feedback from submissions received during the consultation period following the PSCR’s release. TasNetworks received feedback on the PADR for several months post-release, as part of the RIT-T consultation process, including briefings in Melbourne, Sydney and Hobart in early 2020. Subsequent to publishing the PADR, additional data files were made available which contain detailed information relating to PADR modelling assumptions and results. Supplementary Analysis Report The Supplementary Analysis Report responds to stakeholder feedback received on the PADR analysis and takes into consideration the updated scenarios, inputs and assumptions of AEMO's 2020 Integrated System Plan Project Assessment Conclusions Report (PACR) The publication of this report marks the culmination of the Project Marinus RIT-T process, which began in 2018 with the publication of the PSCR. The report outlines the project's stakeholder engagement activities, economic and technical analysis and results in the identification of a preferred option that maximises the net economic benefits to the NEM. The cost-benefit analysis undertaken for the