A solar system installation will allow you to save money in multiple ways. In the Australian solar power market, households are eligible to install a residential rooftop solar system of up to 5kW in output capacity, depending on state regulations.
By feeding electricity generated by your solar power system into the grid, you may be eligible for a credit on your bill. In addition to this, a solar system will reduce the amount of electricity you need to purchase from the grid.
Savings with solar will differ on many situational factors including the size of the solar system, direction of the solar panels, shading, tilt, sunlight hours and more.