For example, you may plan to purchase the solar system and spend the associated fee in installments inside a period of time. In Washington, the payback interval is about 7 – nine years. Path: South-dealing with is ideal. Southeast and southwest dealing with roofs will however receive a lot sun. https://solarinstallerswesternaustralia.wordpress.com/2025/02/17/how-solar-panel-installation-in-wa-can-reduce-your-electricity-bills/