A solar system can help you reduce your bill substantially and in some applications like off grid systems, reduce your bill to zero. In Australia with Net Metering (explained later in FAQ’s), the electricity produced though your solar system is fed directly during the daytime into your home, office or commercial enterprise. This helps you to substantially offset your consumption which you would have paid for. The bigger the system the more likely you will be that power you generate and do not use will be fed back into the grid.
The payment for this electricity you generate and send back into the power grid can offset some of the cost for the electricity you still use from the grid during rainy days or at night.
In short most solar systems will substantially reduce your electricity bills, but a zero bill requires a substantial system size eg more than 4 KW and also you need to monitor your electricity consumption and use energy efficient products such as LED lights.