Buyers' Guide

ON-Grid Solar Energy System:

Components

1. Solar panel

2. Inverter

3. Module mounting structure

4. AC distribution box

5. Earthing & lightning arrestor system

6. Cables and other BoS items

7. Net metering system

Rooftop On-Grid Solar Energy System – Design Criteria:

Available shadow-free rooftop area: Before installing a solar plant at your location, one must check the shadow-free area available. According to the thumb rule, 1 kWp of solar PV plant requires approximately 100Sqft of shadow-free area.

Energy requirement of the house/building: Once you identify the feasible shadow-free rooftop area, the next step is to calculate your energy requirement. One can analyse the previous 12 months of electricity bills to identify the energy needs.

Sanctioned load: Now, the next step is to identify the sanctioned load for the particular residential/commercial consumers. Sanctioned load: This is the load allotted to the particular consumer by the local DISCOM and is mentioned in the electricity bill. Before going for solar installation in a particular area, one needs to identify the sanctioned load as DISCOM in various states follows different policies. For example, in states like Punjab it is 80% of the sanctioned load.