OFF-GRID SYSTEM
These are solar rooftop systems that are not integrated with any grid facility. These systems tend to run independently on a storage facility based on a battery based system. These systems don't have to run on the MSEDCL (Maharashtra State Electricity Distribution Company Limited) norms and they have the option of either applying or not applying the tested energy meters.
ON-GRID SYSTEM
These are the alternative systems that come with the integrated grid facility. These systems don't run on a storage facility based on a battery based system. These systems are purely dependent on the MSEDCL system and have to comply by the MSEDCL norms. These systems have a mandatory requirement for tested energy meters.
Solar rooftop panels are a combination of many independent systems structured to function as a single working unit. One of the components in the system is photovoltaic solar panel that directly converts solar energy (light) into electricity. Many cells are linked together to form an independently working solar panel. Another component is the Grid Tie Inverter which is used to convert DC electricity into AC electricity. This inverter main function is for controlling the power generation.
This is whole system can be structured in ground mounted, elevated, teen shade and many other ways. The material for these structures varies from MS, GI, HDGI and FRP. These structures are built with a mind-set that they can resist against the wind of up to 180 mph. This combination of independent components that come together on the basis of a ground based system called Balance of Systems.