Compare more than the headline price: check the installer’s experience, licences, Clean Energy Council accreditation, proposed equipment, system design and expected output. Ask for itemised quotes covering installation, electrical work, grid connection, monitoring, warranties and any ongoing costs. Confirm who handles warranty claims and whether the workmanship warranty is separate from the manufacturer’s product warranty. Independent reviews and local references can help, but your final choice should also reflect your home’s roof, energy use and budget; an accredited installer can assess the design and explain the likely outcomes.