Answer to Question #141490 in Physics for Raffy

Question

What do you mean by rebound-effect?

Answer 1

The so-called “rebound effect” describes the difference between the theoretically expected savings and the savings achieved in reality. The rebound effect can be indicated as percentage of the deviation from the expected savings.

 Examples of the rebound effect in practice are higher room temperatures following the renovation measures as well as heating the whole house as opposed to heating selected rooms before the renovation. Some users perceive solar thermal energy for DHW as “cost free” energy and therefore use more hot water after the installation of solar thermal collectors.