Compare several itemised quotes, checking the panel and inverter brands, warranties, estimated output and any battery options rather than focusing only on the upfront price. A roof with good north-facing exposure can be helpful in Australia, but east- and west-facing panels may also suit your household’s electricity use; shading should be assessed carefully. Use an accredited installer and confirm the system will meet current Australian standards and grid-connection requirements. Keep panels reasonably clear of debris, monitor their performance and have faults checked by a licensed professional.