TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The solar panel arrangement has umbrella-shape and/or the solar panel arrangement together with the single-post mast, form a mushroom-shaped arrangement. The solar panel arrangement is round-edged and/or has disk-shape, preferably at least approximately circular shape. The solar panel arrangement is mounted on a support frame (14), which is connected to the single-post mast, preferably adjusted and/or fixed. The support frame comprises components, preferably struts and/or tension forming a planar and/or framework-like supporting structure. The solar panel assembly comprises a number of solar panels (12), which rest on crossbeams arranged at a distance, and the respective cross beams are connected by a truss bracing arranged transversely to the cross beams and/or a direct longitudinal connection arranged transversely to the cross beams. The spaced-apart cross beams are connected through the direct longitudinal bracing, which is connected with a centrally supported beam via at least one pull rope. The respective solar panels are inclined and are spaced at a distance from one another, and have saw-tooth and/or downward open spaces respectively. The single-post mast is constructed in two parts, comprising a lower part and an upper part, which is adjustable with respect to the lower part and which is rigidly connected to the solar panel arrangement, preferably to the support frame. The single-post mast comprises a hinge, by which the solar panel arrangement, preferably the support frame and/or an upper part of the mast, is adjustable, preferably rotatable in a horizontal manner, and a tilting device, by which the solar panel arrangement, preferably the support frame and/or an upper part of the mast, is adjustable, preferably rotatable in a vertical manner. The solar panel arrangement comprises bifacial solar panels. The buoyant body has a device for setting a predetermined depth, preferably comprises at least one an anchor, preferably an anchoring cable, at least one additional float, or a load balancing device, preferably a valve and/or a pump. The solar installation modules are arranged such the solar system modules are largely and regularly spaced, preferably row by row and/or aligned in a column-wise manner, forming ice on a water surface.