Solar panels can be known as solar cell panels, or solar electric panels. A photovoltaic system consists of one or more solar panels, an inverter that converts direct current electricity to alternating current where it is. Solar panels for personal use are essential devices that convert sunlight into electricity, 1. increasing property value, and 4. Solar energy is one of the most efficient, economical, and non-polluting renewable energy sources. In Spain, we have an average of between 2,500 and 3,000. Photovoltaics (PV): Devices that convert solar energy into electricity using semiconductors (this conversion is called the photovoltaic effect). Power output/rating: The number of watts a solar panel produces in ideal conditions.