Exploring sustainability transitions in the electricity sector with socio-technical pathways

This paper analyses sustainability transitions in the electricity system, using recent theories on socio-technical pathways. The paper describes three possible transition pathways and indicates the implications for (grid) infrastructures. The `transformation pathway is characterised by a further hybridization of the infrastructure; in the `reconfiguration pathway, internationalisation and scale increase in renewable generation lead to the emergence of a `Supergrid. The `de-alignment and re-alignment pathway is dominated by distributed generation and a focus on more local infrastructures. We suggest that this pathway, which involves a major restructuring of the electricity system, is less likely than the other two. The de-alignment and re-alignment pathway is therefore more dependent on external developments and/or strong policy interventions. All pathways, however, require major investments in infrastructure and innovative technologies.