This paper discusses the literature on 'techno-economic networks' (TENs) an
d 'techno-economic paradigms' (TEPs). The object of study in both literatur
es is some form of combination of the 'technical' and the 'socio-economic';
the phrase 'techno-economic' thus points to the need to see that the wides
t variety of 'actors' may be of significance for particular innovations. Th
e literature on TENs has focused mainly on describing the emergence and sta
bilisation of specific innovations; the literature on TEPs has focused more
on the issues and problems arising from the diffusion of highly 'pervasive
' generic technologies. The two perspectives thus constitute different ends
of a spectrum regarding the formulation of research and policy issues. The
central concern of this paper is to illustrate that, by maintaining a focu
s on innovation and by shifting theoretical registers between the TEN and T
EP perspectives, a number of issues emerge around what we call the 'meso-le
vel techno-economic': at the level of the nation, of national governments,
of specific firms and organisations of particular scientific and technologi
cal disciplines, or of particular market arrangements and patterns of consu
mption. The paper explores some of the applications of the approaches to te
chnological development in relation to the environment and constructive tec
hnology assessment (CTA); it concludes by presenting a possible framework f
or analysis of the meso-level. (C) 1999 Elsevier Science B.V. All rights re
served.