An On-grid solar system, also known as a grid-tied solar system, is a type of solar power system that is connected to the utility grid. The solar panels in an on-grid system generate electricity, which is then sent to the utility grid. When the solar panels are producing more electricity than the home or building is using, the excess electricity is sent back to the grid and the homeowner is credited for it.

A combo content of on-grid solar system would include the following components:

• Solar panels: These convert sunlight into electricity.    Best Brands are : Vikram solar , Waaree , Goldi , Renewsys , Navitas , Premier energies etc. 

• Inverter : This converts the DC electricity generated by the solar panels into AC electricity that can be used by household appliances and sent to the grid. 

• Grid connection equipment: This connects the solar system to the utility grid and ensures that the electricity generated by the solar panels is sent to the grid when it is not being used by the home or building.

• Monitoring equipment: This tracks the performance of the solar system, including how much electricity is being generated and how much is being used.

• Battery backup (optional): A battery backup system can store excess energy generated during the day and can provide power during a power cut or grid failure.

• Pricing for Ongrid Solar system : It may vary based on brands  Approximately Rs.62000 to 72000/kw In Tamilnadu. 

It's important to note that an on-grid solar system requires permission from the electricity distribution company and it also requires net-metering arrangement. It's also important to choose the right size of system, depending on the power consumption of the building. A professional solar panel provider should be able to assess your specific needs and recommend a suitable on-grid solar system for your location.