A commercial solar checklist should cover your electricity bills and usage profile, available roof or ground space, structural condition, shading, switchboard capacity and future expansion plans. Confirm network export limits, metering requirements, planning or building approvals, workplace safety obligations and whether batteries or load management could improve the business case. Ask installers for an itemised proposal covering system size, equipment warranties, monitoring, maintenance, expected generation and the assumptions behind any payback estimate. Check current incentives and certificate rules with the Clean Energy Regulator, and have a licensed electrician or qualified solar professional assess the design before signing.