Theindustry is discussing how problematic the temperature-dependent migration of flat roof systems is and what can be a practicable remedy. The anniversary edition of pv magazine deals with the problem of the so-called caterpillar effect in PV systems. This is an effect caused by temperature fluctuations on slightly inclined roofs: Mounting systems move, similar to a caterpillar, a few millimeters towards the abyss with every temperature change.

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