Requirements for drilling holes for photovoltaic panels installed on roofs

no higher than four metres;at least 5m from boundaries;size of array is limited to 9m 2 or 3m wide and 3m deep;should not be installed within boundary of a listed building;in the case of land in a conservation area or in a World Heritage Site it should not be visible from the highway;only one standalone solar installation is permitted. [pdf]

Solar power generation light level

Solar power, also known as solar electricity, is the conversion of energy from into , either directly using (PV) or indirectly using . use the to convert light into an . Concentrated solar power systems use or mirrors and systems to focus a large area of sunlight to a hot spot, often. The light intensity on a solar cell is called the number of suns, where 1 sun corresponds to standard illumination at AM1.5, or 1 kW/m 2. [pdf]
[FAQS about Solar power generation light level]