This paper expands the outlook on future energy systems as it is presented in other contributions to this Special Issue in two ways. First, we put the medium-term scenarios developed by the TEEM Project into the context of longer-term studies. We do this by discussing the plausibility of...

The paper aims to identify both the major changes that have occurred in the energy sector during the past thirty years and the key driving forces that explain these changes. After a review of the key concepts provided by economic theory in order to analyse technical change in Section 2, Section...