Solar Photovoltaic Panels convert solar energy directly into electricity. PV cells are made up of two or more layers of semi-conducting material, usually silicon, which when exposed to light, generates electricity. Monocrystalline cells are more efficient that polycrystalline cells. In order to be grid connected and possibly sell electricity back to the 'national grid', an inverter is needed within the system to convert generated current in DC to AC.

PV cells are available as panels, roof tiles or semi opaque glazing. They are very low maintenance and provide energy with zero CO2 emissions.

PV cells require a south facing roof with no over-shading by other buildings or trees. Advantages of PV cells are that no extra land space needed and the maximum available light in summer will match peak periods of demand for electricity from hotel guests during the summer holidays. Disadvantages are that systems can be expensive.