The best way to save money with solar is to use the energy yourself. For every kWs of solar energy that you use directly, you reduce the amount of energy that you have to purchase from 3kW Solar Solar Panel Cost in most of Australia. You can also buy 2kW Solar Solar Panel Cost A 2kW solar system will generate approximately 8kWh per day. This is about half the electricity usage of a modest Aussie home and the same as 1.5kW Solar Power systems in Perth this will generate around 5kW per day. solar power panel specifications3kW solar power system installation4kW solar panels specifications6kW solar power panel cost8kW solar power panel Price 9kW solar panel price in Perth WA