Feed-in tariff rates across Australia vary significantly, driven by state regulations, retailer competition, and solar penetration levels:<br><br> <strong>Victoria (VIC):</strong> 3.9c/kWh (regulated minimum) โ Lowest in Australia. The Essential Services Commission sets the minimum FiT quarterly. Some retailers offer up to 12c/kWh on premium plans. VIC also offers the Solar Homes rebate (AU$1,400) and interest-free loans up to AU$8,800 for solar + battery. Low FiT makes batteries very attractive in VIC.<br> <strong>South Australia (SA):</strong> Minimum 5c/kWh (distributed generation). Retailer offers: 5-8c/kWh. SA has the highest retail rates in Australia (36c/kWh), creating the widest FiT-to-retail spread (31c/kWh). Combined with the AU$2,000 Home Battery Scheme, SA offers the strongest battery financial case in Australia.<br> <strong>New South Wales (NSW):</strong> No mandatory minimum. Retailer offers: 5-9c/kWh. Competitive retailer market with downward pressure on FiT rates as solar penetration increases. NSW battery rebate (AU$2,400) available for homes with existing solar.<br> <strong>Queensland (QLD):</strong> No mandatory minimum. Retailer offers: 6-10c/kWh (south-east QLD), Ergon Energy: 9.28c/kWh flat (regional QLD). QLD's high sun hours (5.0/day) mean large export volumes, so even a 1c/kWh difference matters significantly.<br> <strong>Western Australia (WA):</strong> Distributed Energy Buyback Scheme (DEBS): 10c/kWh peak (3pm-9pm), 2.5c/kWh off-peak. The time-varying structure encourages battery storage to shift exports to peak periods. WA's isolated grid means policy can change faster than in NEM states.<br> <strong>ACT:</strong> Minimum 8c/kWh regulated. Retailer offers: 8-12c/kWh. Highest minimum FiT in Australia. ACT's Sustainable Household Scheme offers interest-free loans up to AU$15,000 for solar + battery.<br> <strong>Tasmania (TAS):</strong> Aurora Energy: ~7.5-8.5c/kWh (regulated by Tasmanian Economic Regulator). Lower sun hours (3.8/day) reduce export volumes. Moderate FiT makes battery case less compelling than in states with wider spreads.<br> <strong>Northern Territory (NT):</strong> No regulated minimum. Retailer offers historically 8-20c/kWh โ the highest FiT rates in Australia but paired with very high sun hours (5.8/day) and generous battery grants (up to AU$6,000).<br><br> For a typical 6.6kW system exporting 4,000 kWh/year, annual FiT income ranges from AU$156 (VIC minimum) to AU$480+ (NT high end) โ a AU$324/year difference. However, self-consumption savings dwarf this: avoiding 4,000 kWh of retail purchases saves AU$1,000-1,440/year.