FAQ

What size of array is required to deliver an output of 1kWp? Who do I bill for the solar-generated electricity I produce and how do I bill them? How are solar panels fitted to a building? How is the electrical current fed into the electricity grid? How is it possible to tell if a house is suited to having a solar array installed? Is it worthwhile having a solar array in the North of France? Is it possible to integrate solar panels into roofing? Does the solar array have to be cleaned on a regular basis? Do shadows cast over a solar array affect its electricity yield? Is my house compatible with a solar array? What is an electrical inverter? What is a photovoltaic solar panel? What is photovoltaic electricity? What is meant by Watt-peak (Wp)? What makes Solairedirect different from other solar array suppliers? What is a solar panel’s ‘energy conversion efficiency’? How much does a solar array fitted to a roof weigh? How much will the annual yield of my solar array be?

The productivity of a solar array depends on several factors:

• The orientation of the roof or of the solar array
• The slope angle (pitch) of the array
• The presence or absence of shaded areas
• Local sunshine intensity levels
• Weather conditions

Depending on the region, in France, a solar array produces between 700 and 1300 kWh per year for each kWp of installed capacity.

What is the difference between Solar hot water panels and solar panels? What effect does cloudy weather have on the energy yield of a solar panel? What are the main types of photovoltaic solar panels?