The answer changes with current vendor or installer status on the relevant official channel, legal name, GST details and bank beneficiary, module, inverter, warranty and installation specifications. Pay against milestones you can verify. The safest vendor is the one whose identity, equipment and obligations remain clear after the sales call ends.
Current vendor or installer status on the relevant official channel.
Legal name, GST details and bank beneficiary.
Module, inverter, warranty and installation specifications.