Homeowners can usually arrange a rooftop solar system themselves, subject to local rules, a suitable roof and an installer’s assessment, while renters need the landlord’s written approval before making changes. Renters may also consider negotiating a shared-cost system, joining a community solar scheme, choosing a green-power electricity plan or using eligible portable equipment where permitted. Homeowners might be eligible for government incentives, but eligibility and any benefit depend on current rules and individual circumstances. Check energy.gov.au and speak with your landlord, electricity retailer or a qualified installer before making a decision.