Renters usually need the landlord’s written approval before installing rooftop solar, and the installation should be completed by an appropriately licensed solar professional. Depending on the property and lease, you could discuss a landlord-funded system, sharing the bill savings, or an arrangement where the system stays with the property when you move. Other options may include joining a community solar project or choosing a renewable electricity plan, although these do not usually reduce bills in the same way as panels on your roof. Check your state’s tenancy rules and energy.gov.au, and confirm any proposal with your landlord and electricity retailer.