PROBLEM TO BE SOLVED: To provide an agricultural and horticultural facility comprising a photovoltaic power generation system capable of reducing inconsistency in growing condition by providing constant intensity to agricultural and horticultural crops on every place even if an array of a photovoltaic battery system is arranged at an optional low position and to provide an agricultural and horticultural facility comprising a photovoltaic power generation system capable of suppressing temperature increment in the agricultural and horticultural facility by a feature that light required for growth for the agricultural and horticultural crops is penetrated, whereas the remaining light is efficiently utilized for photovoltaic power generation.SOLUTION: Light penetrating a lighting part of the photovoltaic power generation system with the lighting part is allowed to strike on a light diffusion member and the penetrated diffusion light is allowed to introduced into an inner section of the agricultural and horticultural facility.
