- Depends on the location
- Depends on Panel Efficiency
- Depends on Installation and Ambient temperature
- Solar PV Modules (panels)
- Mounting Structures.
- Inverters
- Batteries
- Charge Controllers
- AC, DC Cables, Junction Box
On Grid Solar |
Off-Grid or Hybrid Solar |
Pros Low maintenance &Simple design Easy integration for net-metering. All appliances can work on it, since wiring does not need to change. |
Pros In areas with unreliable power, people often have batteries and an inverter system for more steady electricity. Solar power can be added to charge batteries faster when grid-power is present, and to power appliances when it is not. |
Cons In case of power cuts, solar electricity cannot be used, since it depends on a reference voltage from grid power. |
Cons Separate wiring for the solar system, so typically only a few appliances are hooked up to use that electricity. |
Best used for An on-grid system is ideal when you would like to lower your electricity bills, and do not need power backup. |
Best used for An off-grid system is best suited if you have unreliable electricity and are looking to decrease disruption to your life due to that. |
- Almost negligible
- The maintenance activities include cleaning the panels with water and a dry cloth
- The maintenance activities should be done once in 2 – 3 weeks depending upon location
- Solar panels – 25 years
- 10 years manufacturer’s warranty
- 90% performance warranty of rated power output for first 10 years
- 80% of rated power output for the next 15 years
- Solar inverters – 5 years
- Solar batteries – 5 years
- Site visit to understand location and the project details.
- Providing multiple installation options to customer.
- Close on final system design and cost with customer.
- Deliver all installation material at the site.
- Construction of rooftop solar system.
- Obtain required approvals from local electricity utility.
- Install net-metering to get the system on the grid.
- The solar system is up and running.
The time required for obtaining utility permissions is ever-evolving, and varies across states and regions:
- In Telangana and NCR, the utility permission phase is completed in 2-3 weeks.
- In Karnataka, it typically ranges from 4-6 weeks.
- In Maharashtra,it ranges between 2-6 weeks.
Broadly, what the utility companies need to ensure is that the local grid is able to handle the additional electricity it receives from the solar system. And in order to do that, they need to look at:
- The project size
- The sanctioned / contracted load
- Current load on the local transformer
Once that the project is approved, they provide an updated bi-directional meter which has to be fitted into the main grid. The time required for obtaining utility permissions is ever-evolving, and varies across states and regions:
- In Telangana and NCR, the utility permission phase is completed in 2-3 weeks.
- In Karnataka, it typically ranges from 4-6 weeks.
- In Maharashtra, it depends on the utility company and the city, and ranges between 2-6 weeks.
- Manufacturing defect warranty by manufacturer- 10 years
- Performance warranty- 25 years
- Less than 1% annual degradation in line with international standards.
- MNRE and International Standards Certified.
- Warranty by manufacturer- 5 years
- MNRE and International Standards Certified.
In the case of systems purchased through bank solar loans, the bank would require insurance to be in place for the duration of the loan term.