Homeowners can sometimes install equipment marketed as commercial solar, but the most suitable system depends on your roof, electricity use, budget and local network requirements. Larger systems may need additional approvals, three-phase power or specialised installation, and they may not qualify for the same small-scale technology certificate treatment as a standard residential system. Your electricity retailer and local distributor can confirm connection requirements, while a licensed solar installer can assess the design and expected generation. For current rebate rules, check the Australian Government’s energy.gov.au guidance before signing a contract.