TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The shielding element exhibits a transmission degree of less than or equal to 50%, preferably less than or equal to 15% in the range of thermal radiation with a wavelength of 3-20 microns. The shielding element exhibits an average transmission degree of at least 80%, preferably at least 90% at a wavelength of 380-1200 nm. The shielding element is a plate (6), a film and/or a coating, preferably a sputtered-, pyrolyzed- or vapor-deposited layer, preferably a low emission layer (4), where the material of the layer is metal or its compounds, preferably silver or tin. The coating is deposited on the back side and/or the front side of the photovoltaic module. The plate exhibits a thermal transmission coefficient of not greater than 500 W/m2K, preferably not greater than 50 W/m2K. The plate is spaced apart from the photovoltaic module and the plate is movable together with the photovoltaic module, where the distance between the plate and the photovoltaic module is at least 1 cm, preferably at least 3 cm. The photovoltaic module comprises at least one carrier plate having an active surface provided with solar cells, and at least one fixation structure which is connected with the carrier plate by connecting elements, where each point in the plane of the active surface, which is defined by the photovoltaic module, is freely movable in a direction perpendicular to the plane, and the active surface is oscillated by wind influence, and thus deposits on the active surface are removed. The connecting elements are arranged in the plane of the photovoltaic module outside the active surface, preferably in a distance to the active surface of at least 20 mm. The connecting elements allow a rotational movement, and comprise a pivot bearing or swivel. The connecting elements allow a translational movement in z-direction or at an angle of less than 90 degrees to the carrier plate. The shielding element exhibits an emissivity of less than or equal to 90%, preferably less than or equal to 15%. The plate is rotatably mounted with the photovoltaic module, where the plate is rotatable such that the photovoltaic module is covered by the shielding element. Preferred Method: The coating is applied on the back side and/or the front side of the photovoltaic module by sputtering, pyrolysis or vapor deposition.