Residential societies have common utilities like Water pumps, Sewage Treatment Plant, Lifts, Common Lighting etc feed from local grid. These societies have apple of roof space available and can set up Grid Tied RoofTop Solar Power Plant under Net Metering Scheme. They can reduce monthly electricity bill significantly.
To promote RoofTop Solar System, Government is providing subsidy for Residential user. Typical Return on investment will be between 3-5 years based on Electricity unit rate. Customer can enjoy green energy free for rest of 20 years.