An off-grid solar system is designed for the power needs of mid-to-large size homes. Unlike a grid-tie solar system, off-grid systems have no connection with the utility grid, and must make all the electricity necessary for your home. Off-grid solar systems operate from the stored energy in a battery bank. Solar panels are used to keep the battery bank charged. Your off-grid solar system has to be sized properly to support your daily power needs and replace the stored energy pulled from the battery bank.

In grid connected system a building have two parallel power supplies solar pv supply exceeds the building’s demand, excess electricity will be exported into the grid. At night and week sunlight condition, the power grid will supply all of the building’s demand Grid connected system is effective way to reduce utility power and increase renew-able energy production and improve environment.

Hybrid solar systems generate power in the same way as a common grid-tie solar system but use batteries to store energy for later use. To keep it simple its combination of ON GIRD & OFF GIRD SYSTEM .This ability to store energy enables most hybrid systems to also operate as a backup power supply during a blackout, similar to a UPS system.