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Infrastructure Investment in Network industries: The Role of Incentive Regulation and Regulatory Independence

Author

Listed:
  • Balázs Égert

    (OECD)

Abstract

This paper finds that coherent regulatory policies can boost investment in network industries of OECD economies. Rate-of-return regulation is generally thought to result in overinvestment, while incentive regulation is believed to entail underinvestment. Yet, previous empirical work has generally found that the introduction of incentive regulation has not systematically changed investment in network industries. According to the theoretical literature, regulatory uncertainty exposes both types of regimes to the danger of underinvestment. However, regulatory uncertainty is arguably higher under rate-of-return regulation because investment decisions (what can be included in the rate base) are usually evaluated in a discretionary manner, while firms operating under incentive regulation are less affected by this behaviour. In addition, incentive regulation encourages investment in cost-reducing technologies. Using Bayesian model averaging techniques, this paper shows that incentive regulation implemented jointly with an independent sector regulator (indicating lower regulatory uncertainty) has a strong positive impact on investment in network industries. In addition, lower barriers to entry are also found to encourage sectoral investment. These results support the importance of implementing policies in a coherent framework. L'investissement dans les industries de réseaux : Le rôle de la régulation incitative et de l'indépendance du régulateur sectoriel Ce document montre que des politiques de régulation cohérentes peuvent encourager l’investissement dans les industries de réseaux. Il est généralement admis que la régulation par le taux de rendement a tendance à causer un surinvestissement, tandis qu’une régulation incitative pourrait produire une situation de sous-investissement. Pourtant, la littérature empirique montre que l’introduction de régimes recourant à l’incitation n’a pas, de manière générale, impacté l’investissement dans les industries de réseaux. D’après la littérature théorique, l’incertitude réglementaire accroît le risque d’un sous-investissement dans les deux types de régime. L’incertitude réglementaire est cependant plus élevée dans un régime par le taux de rendement en raison des décisions discrétionnaires d’investissement (éventuellement inclus dans la base du taux de rendement), alors que les entreprises dans un régime incitatif sont moins affectées par ce genre de décisions. De plus, la régulation incitative favorise l’investissement dans les technologies visant à réduire les coûts. Par des techniques d’estimation bayesienne, ce papier montre qu’une régulation incitative mise en place en même temps qu’un régulateur sectoriel indépendant influence positivement l’investissement dans les industries de réseaux. De plus, la réduction des barrières à l’entrée encourage, elle aussi, l’investissement. Ces résultats soulignent l’importance de la mise en oeuvre cohérente des politiques sectorielles.

Suggested Citation

  • Balázs Égert, 2009. "Infrastructure Investment in Network industries: The Role of Incentive Regulation and Regulatory Independence," OECD Economics Department Working Papers 688, OECD Publishing.
  • Handle: RePEc:oec:ecoaaa:688-en
    DOI: 10.1787/225261508320
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    JEL classification:

    • L51 - Industrial Organization - - Regulation and Industrial Policy - - - Economics of Regulation
    • L97 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Utilities: General
    • L98 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Government Policy

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