| Line item | What to demand | Red flag |
|---|---|---|
| Modules | Exact model, wattage, quantity, technology and warranty | “Premium panel” with no model. |
| Inverter | Exact model, AC rating, MPPTs, warranty and monitoring | Model substitution allowed without approval. |
| Structure | Material, coating, attachment method and design assumptions | No roof-specific structural scope. |
| Electrical BOS | DC/AC cable, connectors, isolators, earthing and surge protection scope | “All accessories included” with no schedule. |
| Generation estimate | Assumptions for irradiation, shade, orientation and losses | Guaranteed annual units with no methodology. |
| Approvals | Exact vendor responsibility and fees | “Subsidy guaranteed.” |
| Payment | Milestones tied to equipment, installation and commissioning | Full advance with weak contractual safeguards. |
← Full guide: Rooftop Solar Quote Comparison: Modules, Inverter, Structure, and Warranty
A quote-comparison table that exposes hidden differences
For “A quote-comparison table that exposes hidden differences”, line item. What to demand. Red flag. Modules.
Start here
For “A quote-comparison table that exposes hidden differences”, line item. What to demand. Red flag. Modules. Exact model, wattage, quantity, technology and warranty. “Premium panel” with no model. Inverter. Exact model, AC rating, MPPTs, warranty and monitoring. Model substitution allowed without approval. Structure. Material, coating, attachment method and design assumptions. No roof-specific structural scope..
What applies to this exact problem
Check these first
- Line item: What to demand.
- Modules: Exact model, wattage, quantity, technology and warranty.
- Inverter: Exact model, AC rating, MPPTs, warranty and monitoring.
Fix it in this order
- Line item: What to demand.
- Modules: Exact model, wattage, quantity, technology and warranty.
- Inverter: Exact model, AC rating, MPPTs, warranty and monitoring.
- Structure: Material, coating, attachment method and design assumptions.
- Electrical BOS: DC/AC cable, connectors, isolators, earthing and surge protection scope.
- Generation estimate: Assumptions for irradiation, shade, orientation and losses.
- Approvals: Exact vendor responsibility and fees.
Evidence to keep
- Signed quote and scope — keep it with the evidence for “quote-comparison table that exposes hidden differences”.
- Module/inverter serials and warranty — keep it with the evidence for “quote-comparison table that exposes hidden differences”.
- DISCOM/portal application IDs — keep it with the evidence for “quote-comparison table that exposes hidden differences”.
- Generation data, photos, and installer tickets — keep it with the evidence for “quote-comparison table that exposes hidden differences”.
Do not make it harder
- Paying the final amount before checking agreed milestones For “quote-comparison table that exposes hidden differences”, that can hide whether the underlying issue is actually resolved.
- Assuming low generation is automatically a bad panel For “quote-comparison table that exposes hidden differences”, that can hide whether the underlying issue is actually resolved.
- Treating installer completion as DISCOM/subsidy completion For “quote-comparison table that exposes hidden differences”, that can hide whether the underlying issue is actually resolved.
How you know it is fixed
- The official record and your real-world result agree for “quote-comparison table that exposes hidden differences”.
- You have enough written evidence to prove the issue is finished if it returns later for “quote-comparison table that exposes hidden differences”.
If this still isn't resolved
- Installer/vendor grievance State the unresolved issue explicitly: “quote-comparison table that exposes hidden differences”.
- DISCOM/portal grievance route State the unresolved issue explicitly: “quote-comparison table that exposes hidden differences”.
- Consumer forum or other official remedy where appropriate State the unresolved issue explicitly: “quote-comparison table that exposes hidden differences”.
Parent-guide references
These references support the parent guide and escalation context. Verify provider-, model-, policy-, or jurisdiction-specific details before an irreversible step.
Need the complete context?
This page solves one branch. The parent guide covers the full decision, edge cases, alternatives, and related checks.