This article argues that styles of innovation diffusion dynamics depend on both national and niche-specific factors and that their respective influence changes during the innovation diffusion process. Based on a review of approaches, dealing on the one hand with differences in national innovation and technology systems and on the other with process of niche formation and development, a theoretical synthesis and pattern of analysis is suggested for interpreting and comparing empirical findings from two different technology examples. The analysis of combined heat and power (CHP) in Germany, UK and the Netherlands, and of electric vehicles in Germany, Sweden and France allows us to identify different styles of innovation diffusion dynamics. These styles are determined by the relative importance of national and niche-specific factors in different phases of the process of technological change. Support in lent to the hypothesis that a style which combines impulses for innovation at both structural and niche is particularly conducive to radical change.