NOVELTY - The photovoltaic system (1) has a solar panel (3) that generates electricity during periods of solar radiation (4), an energy storage device (5) that stores electrical power. A mains connection is adapted to transfer power between photovoltaic system and a mains grid (6). A control unit controls the transfer of electrical power between solar panel, mains grid, energy storage device, and electrical load (2) based on predetermined parameters relating to e.g. amount of solar radiation. The energy storage device stores electrical power generated by solar panel during periods of solar radiation.    USE - Photovoltaic system for powering electrical load e.g. light, electrical appliance such as refrigerator, washing machine.    ADVANTAGE - Enables solar panels to generate electricity during periods of radiation and store any excess electrical power generated by the solar panels but not required by the load to be stored in energy storage device or battery for later use. Enables any excess power to be exported to the mains grid whenever the energy storage device or battery is fully charged. Allows using the actual power generated by residence/commercial premises in periods of sufficient solar power generation by the connected electrical appliances, the storage of any excess power generated and which is not required by the load to be stored in a battery or other energy storage device, and supply of any excess generated power to the grid/mains system (to be sold and/or obtain a rebate) when/if the battery is fully charged. Allows inverter/charger of photovoltaic system to work as uninterrupted power supply (UPS) and instantly power the load if there is blackout during the daytime.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of powering an electrical load using a photovoltaic system.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the photovoltaic system.    Photovoltaic system (1)    Electrical load (2)    Solar panel (3)    Solar radiation (4)    Energy storage device (5)    Mains grid (6)