Liberalisation of generation and supply activities in the electricity sectors is often followed by regulatory reform of distribution networks. In order to improve the efficiency of distribution utilities, some regulators have adopted incentive regulation schemes that rely on performance...

There are two difficulties in doing an objective evaluation of the performance of decision-making units (DMUs). The first one is how to treat undesirable outputs jointly produced with the desirable outputs, and the second one is how to treat uncontrollable variables, which often capture the...

Since the early 1980’s, many countries have implemented electricity sector reform, many of which have bundled generation, transmission, distribution and supply activities, and have introduced competition in generation and supply. An increasing number of countries are also adopting incentive...

Efficiency analysis of electricity distribution networks is often limited to technical or cost efficiency measures. However, some important non-tradable aspects of their service such as quality of service and network energy losses are generally not part of the analysis. A regulatory concern is...

Efficiency and productivity analysis is a central concept in incentive-based regulation of network utilities. However, the efficiency measures obtained from benchmarking predominantly reflect short term performance and hence, provide only a snapshot of the firm's path towards its long run...

The purpose of this paper is to examine the lessons from the recent history of telecoms deregulation for the electricity (and by implication heat) network regulation. We do this in the context of Ofgem’s RPIX@ 20 Review of energy regulation in the UK, which considers whether RPI-X based price...

This paper applies the concept of regulatory threat to analyse the electricity supply industry in Germany, where in contrast to other European member states, there is no ex-ante regulation of network access charges. Instead, network access relies on industrial self-regulation and ex-post control...