Ideal Rooftop Solar Quote Checklist
These are the details a good rooftop solar quote should ideally mention so homeowners can compare options fairly.
Essential
- Exact panel brand and model
- Exact inverter brand and model
- DC capacity and AC capacity
- Structure type and material
- DC/AC cable size
- DCDB/ACDB/SPD
- Earthing
- Net-metering charges
- Subsidy eligibility
- GST and final price
- Warranty
- Exclusions
Important
- MPPT/string design
- Wind-load rating
- Structure thickness/gauge
- DCR/ALMM status
- Lightning arrestor
- Waterproofing
- Month-wise generation estimate
- Complaint response time
Advanced
- Voltage/current calculation
- Temperature coefficient
- Degradation rate
- Bifacial gain assumption
- Earth resistance test report
- Single-line diagram
- Serial numbers
- Clipping loss
- Roof load
Structural
- Roof condition
- Structure height and tilt
- Anchoring method
- Waterproofing responsibility
- Wind-load assumption
- Maintenance access
Safety
- DC-rated protection devices
- Surge protection
- Shutdown labels
- Separate earthing paths
- Lightning arrestor details
- Cable routing and conduit
Documentation
- Panel datasheet
- Inverter datasheet
- System layout
- Single-line diagram
- Warranty documents
- Commissioning report
- Net-metering application proof
- Handover checklist
Aluminium is corrosion-resistant and lightweight, but grade, section size, fasteners, and wind-load design matter. Hot-dip galvanised steel is strong and durable when properly coated. Pre-galvanised steel is usually cheaper but cut, welded, or drilled areas need proper anti-rust treatment. No material is automatically best in every case.