Solar panels can suit many Perth homes because of the region’s strong sunlight, but value depends on your electricity use, roof direction, shading, system size and feed-in tariff. Using more solar during the day can improve savings, while a battery may help if your usage is mainly in the evening. Any Small-scale Technology Certificate (STC) discount depends on the system, installation date and current rules, so it should be confirmed rather than assumed. Compare itemised quotes from accredited installers and check current guidance through the Clean Energy Regulator and energy.gov.au.