Types Of Grid Connected PV Systems
There are two types of grid-connected solar systems:
On-grid systems: In this type, the solar system is integrated with a grid. It is the most popular and widely trusted grid connected PV system available in the market.
On-grid systems with a battery backup: This grid connected PV system is similar to the first one, except that it has a battery backup, also known as a hybrid solar system. The batteries store the extra electricity from the sunlight and save them for emergencies. Compared to the first one, this photovoltaic system is more expensive as additional batteries are required to store electricity.
Grid Connected PV System Vs Off Grid PV System
| Grid Connected PV System | Off Grid PV System | |
| Installation | Cannot be installed without a utility grid | Installed without a utility grid |
| Equipment Required | Grid-tied solar inverter, solar panels, bidirectional meter, grid, mounting structures Solar charge controller, battery bank, DC disconnect (additional), | off-grid inverter, backup generator (optional) |
| Cost | Cost-efficient | Comparatively costly |
| Efficiency | Highly efficient, drawn directly from sunlight Efficiency decreases over time with the aging battery bank | Energy Storage Less energy storage needed Large amount of energy storage required |
Advantages of Using a Grid Connected PV System
Disadvantages of a Grid Connected PV System
Price Of A Grid Connected PV System
A 1 KW grid-connected PV system can cost anywhere between Rs. 50,000 to Rs. 70,000. The price heavily depends on the panel chosen, the cost of the inverter, the features of the PV system, the year of installation, the system size, and many other factors. Government subsidies are available for residential rooftop installation. A 40% subsidy is offered to install a solar system between 1 KW to 3 KW. A 20% subsidy is provided to install a solar system between 4 KW to 10 KW.
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