diversity of intermittent generation sources, leading to efficient generation siting decisions from a resource perspective. A number of possible augmentations to increase interconnection in the NEM were considered in studies, informed by co-optimised generation and transmission expansion modelling. A AEMO’s summary of the options selected through modelling for inclusion in case studies is shown in Table 3. Table Interconnector options considered Interconnector Forward Increase from Increase from Timing in Timing in Timing in 45% direction present present Neutral Low Grid Emissions notional limit notional limit Demand Reduction (MW) (MW) Forward Reverse direction direction 300 QNI NSW–QLD 2028–29 2026–27 2025–26 450 0 VIC–NSW VIC–NSW 2029–30 2023–24 2029–30 170 Additional South 325 to 650 Australian VIC/NSW–SA 2021–22 2021–22 2021–22 325 to 650 Interconnector Second Bass 600 Strait TAS–VIC 2025–26 2025–26 2025–26 600 interconnector Table 4 shows the modelled case studies considered for each of the three defined scenarios. Each case study investigated the impact of various combinations of interconnector developments, as outlined in the table. The + case study was designed to explicitly test whether the benefits ‘2BSI 1200MW wind’ of a second Bass Strait interconnector increased if more renewable generation was built in Tasmania. Table Case studies Case study Abbreviation Description Upgrade QNI & VIC–NSW Base case Incremental augmentation to the existing QNI and VIC–NSW interconnectors interconnectors (‘Base case’) Second Bass Strait 2BSI Introduction of a second TAS–VIC interconnector as well as the interconnector augmentations identified in the Base case Additional South Australian New SA Link Introduction of an additional South Australian interconnector as well as interconnector the augmentations identified in the Base case Both second Bass Strait IC New SA Link + Introduction of both of the above proposed interconnectors as well as and additional interconnection 2BSI the augmentations identified in the Base case with SA Second Bass Strait 2BSI + 1200MW Introduction of a second TAS–VIC interconnector and concurrent build Interconnector with additional wind of 1,200 MW of wind generation in Tasmania as well as the Tasmanian wind generation augmentations identified in the Base case
diversity of intermittent generation sources, leading to efficient generation siting decisions from a resource perspective. A number of possible augmentations to increase interconnection in the NEM were considered in AEMO’s studies, informed by co-optimised generation and transmission expansion modelling. A summary of the options selected through modelling for inclusion in case studies is shown in Table 3. Table Interconnector options considered Interconnector Forward direction Increase from present notional limit (MW) Forward direction Increase from present notional limit (MW) Reverse direction Timing in Neutral Timing in Low Grid Demand Timing in 45% Emissions Reduction QNI NSW–QLD 450 300 2028–29 2026–27 2025–26 VIC–NSW VIC–NSW 170 0 2029–30 2023–24 2029–30 Additional South Australian Interconnector VIC/NSW–SA 325 to 650 325 to 650 2021–22 2021–22 2021–22 Second Bass Strait interconnector TAS–VIC 600 600 2025–26 2025–26 2025–26 Table 4 shows the modelled case studies considered for each of the three defined scenarios. Each case study investigated the impact of various combinations of interconnector developments, as outlined in the table. The ‘2BSI + 1200MW wind’ case study was designed to explicitly test whether the benefits of a second Bass Strait interconnector increased if more renewable generation was built in Tasmania. Table Case studies Case study Abbreviation Description Upgrade QNI & VIC–NSW interconnectors (‘Base case’) Base case Incremental augmentation to the existing QNI and VIC–NSW interconnectors Second Bass Strait interconnector 2BSI Introduction of a second TAS–VIC interconnector as well as the augmentations identified in the Base case Additional South Australian interconnector New SA Link Introduction of an additional South Australian interconnector as well as the augmentations identified in the Base case Both second Bass Strait IC and additional interconnection with SA New SA Link + 2BSI Introduction of both of the above proposed interconnectors as well as the augmentations identified in the Base case Second Bass Strait Interconnector with additional Tasmanian wind generation 2BSI + 1200MW wind Introduction of a second TAS–VIC interconnector and concurrent build of 1,200 MW of wind generation in Tasmania as well as the augmentations identified in the Base case
feasibility-second-tas-interconnector-report-for-tasmanian-energy-taskforce-app-c-2017_0.docx