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A rooftop solar power plant is a photovoltaic system that generates electricity from sunlight using solar panels mounted on the rooftop of residential, industrial, or commercial buildings or structures. It is very popular worldwide. The typical capacity of a rooftop solar system is around 5 kW. However, it can be anywhere between 1 kW to a few 1000 kW. Although the name is rooftop the same system can be installed on the ground also, which is then called a ground-mounted solar system. The cost of a rooftop solar system depends on the system size (1 kW, 25 kW, etc), system type (on-grid, off-grid, hybrid, etc), autonomy needed (1 Hr, 4 Hr, 24 Hr, etc), location, and also on the quality of the products and services.
Particular | On-Grid | Hybrid | Off-Grid |
|---|---|---|---|
Purpose | Savings on electricity bill and run heavy load | Savings on electricity bill and power backup | Grid independence and energy security |
When to Use | When high quality grid electricity available more than 90% time in a day | When grid electricity is available but frequent power cut (< 4 hr) is observed | When grid electricity is not available or energy security is the priority |
Where to Use | Urban or suburb area | Suburb or rural area | Rural or remote area |
Maximum Load | Up to contract demand | Up to 80% of the inverter capacity | Up to 80% of the inverter capacity |
Power Backup | Not available | 1 hr to 4 hr | 1 hr to 24 hr |
Price | Low | Moderate | High |
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