Wind patterns play a key role in the energy production of the photovoltaic power plant. The heat flux from the photovoltaic generator surface to the air varies while the air flux develops from a laminar to a turbulent regime. The decrease of the heat transfer coefficient with the air flux development makes the temperature in the turbulent zone remain high. This increases the temperature dispersion inside the whole photovoltaic generator up to 14 °C1 , slightly increasing the mismatch losses2 . However, the impact of wind patterns on big PV generators remains unknown. It is demonstrated that the wind speed increase is responsible for the mismatch losses increase. Benefits of photovoltaic cooling, usually composed by a single module3–9 , are commonly assumed to be the same in photovoltaic generators. Contrarily to this common belief, the consequent overall thermal behaviour due to the wind speed affects negatively energy production. Considering both the long-term energy estimations and lifespan of a photovoltaic power plant, these experimental results suggest that the wind patterns cannot be neglected, especially in the next years due to the climatic change.