For the installation of a solar PV power plant, it's ideal to have a roof made of RCC concrete or corrugated GI/tin shade. The roof should be free from shadows, and a North-South orientation is preferred for maximum solar generation. However, if your roof is East-West oriented, it's still feasible, but energy generation may be slightly lower

You need to tell us about your roof type, area available, your electricity consumption. It will be great if you can provide us a roof drawing with dimension and your last few month's electricity bill.

The cost of installing a solar PV power plant varies based on several factors. These include capacity, equipment preferences, roof type, and consumable materials like cable requirements. Please don't hesitate to reach out to us using the contact details provided above. We will assess your specific needs, and if necessary, conduct a site survey to provide you with an estimated cost through a detailed quotation

Almost OEM of Solar PV Module companies provides 25 years warranty on 80% power and 10 years product and power warranty on 90% power. 
Most of the OEM inverters provide 5 years product warranty. Few premium OEM even provide 7-10 years warranty too.