Businesses in the solar panel category supply, design and install systems that use sunlight to generate electricity, usually through photovoltaic (PV) panels. They may work on homes, commercial premises or other buildings, assessing roof condition, orientation, shading and electricity use before recommending a suitable system. Some also install ground-mounted arrays where there is enough space. Typical services include fitting panels, inverters and electrical connections, and integrating battery storage so surplus electricity can be stored for later use. Installers may arrange grid connection notifications, explain system monitoring and provide maintenance or fault repairs. Solar thermal systems, which use sunlight to heat water rather than generate electricity, may also be offered by some businesses in this category. Customers can expect information about system operation, expected generation and any planning or building-control considerations.