Sri Saravanas Agencies An off-grid solar system is an independent power system that operates entirely detached from the conventional electricity grid. This means your home in Thanjavur would generate all its electricity from solar panels and store any excess in batteries for use when the sun isn't shining (e.g., at night, on cloudy days). An off-grid solar system in Thanjavur can provide true energy independence, but it requires careful planning and a higher initial investment compared to grid-tied systems.