The Clean Energy Council (CEC) does not provide a simple ranking of installers, but its installer directory can help you check whether an individual is currently accredited. Compare several written quotes, including the system design, equipment, warranties, installation inclusions, expected performance and total price. CEC accreditation supports eligibility for some government incentives, but it is not a guarantee of workmanship, service or suitability for your property. Check the installer’s licences, insurance, experience and customer reviews, and verify current details through the CEC website before signing.