Australia is home to some of the best solar energy resources in the world. Although Melbourne, Victoria is a bit further south than Brisbane or Sydney, there's still enough sunshine to make panels a worthw. Federal STC Upfront Rebate For those looking for solar rebates, the federal government's Renewable Energy Target contains a mechanism that reduces the up-front cost. Thanks in great part to the STC rebate and the Victorian State scheme, Melbourne is home to some of the lowest PV system installation prices in the world – one of the reasons that ther. According to our analysis, Victorians who are eligible for the Solar Victoria rebate have the best case for solar anywhere in Australia, including those in the sunny northern parts. A. In general, the return on investment for solar batteries in Australia is lower than solar panels. This is mainly due to the fact that the cost of batteries hasn't (yet) gone through the dram.