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International audienceThe introduction of competition in regulated industries may have positive or negative side-effects on the provision of collective goods or services. The paper shows that these effects are closely related to two associated elements: the industrial strategies developed by utilities and the regulatory environment within which they operate. Regulatory rules and corporate strategies influence the treatment of public service obligations. This raises a major issue regarding the regulation of public utilities. To reduce the drawbacks of the introduction of competition, it is necessary to set regulatory rules that allow the implementation of market configurations enabling public utilities to follow a public service orientation rather than a pure market-based approach. © CIRIEC 1999

The aim of this paper is to analyse the impact of the opening of the competitive arena in regulated markets on the nature and intensity of innovation. The cases of the electricity sectors in the USA and England & Wales are taken as examples. The present condition and the evolution of R&D programmes and institutions in the American and English electric sectors are analysed. We show that the current regulatory reforms lead to significant cuts in R&D programmes, especially those focusing on new technological fields.