Perceived uncertainties regarding socio-technological transformations: towards a framework

Socio-technological transformations are difficult to achieve. Percieved uncertainties that hinder the innovation decisions of involved actors play a key role in this process. Determining how percieved uncertainties differ between types of actors and between transorfmation phases (pre-development, take-off, acceleration, stabilisation) can provide essential insights for managing such transformations. This article aims at presenting a framework for anlysing the role of uncertainties in socio-technological transformations. In this framework, we clasify uncertainties according to their source (technology, resouces, competitors. suppliers, consumers, politics), nature (knowledge, vaiability) and level ( low to high) and relate this uncertainty typology to the different transformation phases and involved actors. Finally, we discuss implications for policy.