Technological innovation systems and the multi-level perspective: Towards an integrated framework

Technological innovation systems and the multi-level framework are closely related concepts for the study of far-reaching technological change. They draw on common theoretical roots and analyze similar empirical phenomena. However, they have developed rather independent research strands over the past few years. The paper reviews the state of the art of both concepts and explores commonalities as well as differences. Against this background, we outline first elements of a path towards an integrated framework that combines the strengths of the two approaches and allows providing a better understanding of radical innovation processes and socio-technical transformations. (C) 2008 Elsevier B.V. All rights reserved.