Sky-Electric Solar Panels.
It is used colloquially for a photo voltaic (PV) module.
A PV module is an assembly of photo-voltaic cells mounted in a framework for installation.
Photo-voltaic cells use sunlight as a source of energy and generate direct current electricity. A collection of PV modules is called a PV Panel, and a system of Panels is an Array. Arrays of a photovoltaic supply solar electricity to electrical equipment.