Renting usually makes a permanent rooftop system difficult unless your landlord agrees, with installation, ownership, maintenance and moving arrangements documented. Portable solar and battery kits offer flexibility but generally have lower output and need safe placement, while community solar or a retailer’s GreenPower option can avoid equipment but may provide less direct bill reduction. Compare upfront and ongoing costs, portability, contract terms, metering and whether equipment can move with you. Check electrical safety with a licensed electrician and confirm program terms with the relevant provider or energy.gov.au.