Solar panels are photovoltaic (PV) devices that convert sunlight directly into electricity. They are made up of multiple solar cells, typically using monocrystalline or polycrystalline silicon, protected by tempered glass and a durable frame. When sunlight falls on the cells, they generate DC electricity, which is then converted into usable AC electricity by a solar inverter.

Modern solar panels are available with advanced technologies such as PERC, TOPCon, N-Type, and bifacial cells, offering higher efficiency and improved long-term energy production. They can be installed on residential rooftops, commercial buildings, industrial facilities, and ground-mounted solar plants.

A complete solar installation generally includes solar panels, mounting structures, DC cables, inverter, AC protection equipment, smart/net meter, earthing, and monitoring systems. In a grid-connected system, the electricity generated by the panels first supplies the building's electrical loads, while excess electricity can be exported to the electricity grid through net metering, subject to the applicable utility rules.