Renters generally need the landlord’s written permission before installing rooftop solar, as it involves altering the property and connecting equipment to the grid. Ask about a written agreement covering ownership, maintenance, removal and how any benefit will be handled when the lease ends. If rooftop panels are not practical, consider a portable plug-in solar setup only where it complies with Australian electrical and safety requirements, or investigate a community solar program or a green-energy tariff from an electricity retailer. Check proposed equipment with a licensed electrician and confirm any arrangement with your landlord and retailer.