The issue of STS may be divided into two aspects. The first claims that students should be able to understand issues of energy supply in society by employing knowledge gained in school. The second regards the impact of energy teaching energy-concerned behavior in daily life. Where understanding energy issues in society is concerned, the results show that energy knowledge gained in school is often not even used in school science contexts. Use of this knowledge in out-of-school domains does not appear to be very likely. Energy-concerned behavior does not appear to be directly influenced by energy knowledge but by more general factors factors that have been mentioned above.