Start with the application you actually need
Household rooftop solar, a commercial plant, agricultural pumping and public lighting are different projects. Tell each proposer how the system will be used, where it will be installed and what matters operationally. An installer’s residential photographs should not be treated as proof of an industrial project or a high-mast installation. Ask for references matched to the application, and distinguish a real site photograph from a concept image.
Match identity and relevant registration
Compare the company name and contact details across the proposal, agreement and invoice. For a PM Surya Ghar installation, check the vendor selection in the official portal for the household’s application. A brand label, component certificate or trade-directory profile serves a different purpose. Use the vendor-verification checklist to keep the district and DISCOM scope of that check clear.
Expect a site-specific assessment
Prepare bills, roof or site photographs, access information and the intended load. Ask what the survey will assess and what remains outside the installer’s responsibility. A proposal should explain why its capacity and layout suit the actual site. Roof condition, shade, structure, electrical integration and maintenance access matter alongside the equipment list. For homes, read the roof-preparation guide before arranging a visit.
Compare the equipment and work in writing
Ask for module and inverter models, mounting, protection, metering responsibilities and any storage. Identify civil work, roof repairs, shutdown arrangements, monitoring, tests and handover documents. Compare exclusions as carefully as the headline price. Agree how equipment substitutions and scope changes will be recorded. A list of brand logos or an unqualified claim about premium components is less useful than the schedule for the actual supplied system.
Separate warranties and service promises
Record the manufacturer coverage and claim process for each component, together with workmanship and maintenance responsibilities. A service agreement and a module performance warranty are different commitments. Ask how a fault is reported, who coordinates manufacturer claims and which maintenance duties remain with the customer. Do not assume that a callback promise is a repair-time guarantee or that a government scheme determines every private contract term.
Use evidence to make the final comparison
Review relevant project profiles, the written survey findings and the complete quotation together. HELLOCON’s nine documented 3 kW home projects provide local residential examples in Jajpur and Cuttack. Measured generation, customer statements and commissioning timelines require their own records; photographs alone cannot supply them. Keep the agreement, equipment schedule and handover records together, then use the EPC scope guide as a final checklist of responsibilities.
This guide explains general system principles. Final technical suitability and scheme eligibility require project-specific review.
All resources ＋PM Surya Ghar: Odisha subsidy and application guide ＋