Hello Luponell,
that depends ... Measure your rafters. Mine are 118 * 48 mm with a distance of 1200 mm. That was not enough for the structural engineer.
My solar installer then recommended an [Indach-Anlage]. The tiles are removed and replaced with a metal tray in which the modules are mounted. The total weight of the substructure and modules is less than that of the removed tiles. Therefore, there is no structural problem. The substructure for 10 modules would have cost a little more than 3000 € (would have -> I had to postpone it to next year for other reasons).