The central idea of this paper is that innovation systems are a very important determinant of technological change. We describe that the emergence of a new innovation system and changes in existing innovation systems co-evolve with the process of technological change. Therefore, it is necessary to create more insight in the dynamics of innovation systems. Traditional methods of innovation system analysis that mainly focus on the structure of innovation systems have proven to be insufficient. Therefore, we propose a framework that focuses on a number of processes that are highly important for well performing innovation systems. These processes are labeled as “functions of innovation systems”. After explaining this framework and embedding it in existing literature, we propose a method for systematically mapping those processes taking place in innovation systems and resulting in technological change. This method can be characterized as a process analysis or history event analysis. Clarifying examples are taken from the empirical field of Sustainable Technology Development

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We note the emergence of a new type of intermediary organization, which functions at system or network level, in contrast to traditional intermediary organizations that operate mainly bilaterally. These "systemic intermediaries" are important in long-term and complex changes, such as "transitions" to sustainable development, which require the coordinated effort of industry, policy makers, research institutes and others. We use the Systems of Innovation approach to characterize the roles of traditional and systemic intermediary organizations. A review of recent changes in innovation systems points to the need of more systemic efforts, such as the articulation of needs and options, the alignment of relevant actors and the support of learning processes. In a phase model of transitions additional roles of systemic intermediaries are identified. A case study of the Californian Fuel Cell Partnership shows how the efforts of systemic intermediaries in encompassing systemic innovations are useful and necessary, but not sufficient.

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Since the 1970s research on energy conversion technologies, such as biomass digestion, has been carried out in the Netherlands. However, after 30 years biomass digestion has not been implemented on large scale. The aim of this paper is to create insight into the underlying factors of this troublesome trajectory by applying the 'Functions of Innovation Systems' framework. This results in clear understanding of the (lack of) activities that took place in the innovation system of biomass digestion and the role of government policy in both inducing and blocking this development. The analysis provides several lessons to take into account when developing policies for the acceleration of the development and diffusion of biomass energy.