The arrangement has several longitudinal bearers (LT) running in a longitudinal direction and several transverse bearers (QP) connected to them as well as attachment arrangements for fixing the supporting arrangement to the base surface or a substructure. The longitudinal bearers each contain a longitudinal profile curved away from the base surface and a traction element (ZE) that bridges a curve formed by the longitudinal profile as a chord of the curve.. Independent claims are also included for the following: (A) a solar system with a number of solar modules (B) and a solar module.
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