Solar power is energy generated from the heat or light from the sun which can be used to produce heat, light, hot water, electricity, and cooling in a wide variety of applications including grid-tied and off-grid cabins and homes, commercial businesses, and industries such as oil and gas, telecommunications, remote traffic control equipment, remote sensing, and remote lighting.
How an Off Grid Solar System WorksOFF GRID refers to a power system that generates electricity such as a solar array. The energy produced is stored in batteries and the energy system isn't connected to the utility power grid.
ON GRID refers to a energy power system that's connected to the utility power grid. In the case of a solar energy system, excess power from the solar array, not used by the home/business is fed into the utility grid and the utility meter records the power excess as a credit. This excess is then used when solar power is not available. Batteries aren't needed in a on grid system.