2005年-世界发展银行全球_Electricity_Sector_Reform_in_Developing_Countries___A_Survey_of_Empirical_Evidence_on_Determinants_and_Performance_78页_787kb

Electricity Sector Reform in Developing Countries: A Survey of Empirical Evidence on Determinants and Performance

Core Content

This paper provides a critical review of the empirical evidence on electricity sector reform in both developing and developed countries. It examines the determinants and performance outcomes of reforms, highlighting the importance of institutional and regulatory frameworks in shaping the success or failure of these initiatives. The study is based on the World Bank Policy Research Working Paper 3549, published in March 2005.

Main Views and Key Information

1. Importance of Reforms

• Electricity sector reforms in developing countries have been driven by ideology, economic reasoning, and early success stories.
• These reforms aim to improve efficiency, expand access, and reduce fiscal drain in the public sector.
• However, the empirical support for these reforms is mixed, with some studies showing limited effectiveness in passing efficiency gains to consumers and addressing distributional issues.

2. Role of Institutions and Governance

• Country institutions and sector governance are crucial for the success of reforms.
• Effective regulation is necessary to ensure cost-reflective pricing, which in turn supports investment and reduces fiscal burden.
• Regulatory frameworks must be robust and independent to ensure the long-term viability of reforms.

3. Performance Outcomes

• Reforms have generally improved operating efficiency and expanded access to urban customers.
• However, rural access and distributional effects have not been as effectively addressed.
• Some studies show that privatization can lead to better performance, but this is not universally supported by empirical evidence.

4. Challenges in Reform Implementation

• Reforms in developing countries are often in early stages, with only a minority having taken significant steps.
• The complexity of electricity markets, due to real-time balancing and infrastructure characteristics, makes reform more challenging.
• Political and economic difficulties, such as tariff adjustments and corruption, have also hindered reform progress.

5. Theoretical Ambiguity

• The economic literature on electricity sector reform is marked by theoretical ambiguity and differing views on the effectiveness of privatization and competition.
• Some theories suggest that public ownership can be more efficient in certain contexts, while others support privatization for improved performance.

6. Empirical Methodology

• Empirical studies often focus on simple pre- and post-reform comparisons using narrow financial and operational indicators.
• The multi-dimensional nature of reform and performance makes it difficult to design robust econometric models.
• There is a need for more comprehensive and nuanced analysis that accounts for institutional, policy, and market structure factors.

Key Research Questions and Hypotheses

• What is the impact of reform on sector performance?
• How do institutional and regulatory factors influence the success of reforms?
• What are the determinants of reform in developing countries?
• How do different reform models affect efficiency and access?

Key Elements of Reform

• Corporatisation of state-owned utilities
• Enactment of electricity reform laws
• Unbundling of vertically integrated utilities
• Third-party access to networks
• Regulatory reform, including incentive regulation
• Establishment of an independent regulator
• Creation of a competitive wholesale generation market
• Liberalisation of the retail supply market
• Privatisation of electricity assets
• Definition of rules for consumer protection, energy subsidies, and stranded costs

Sector Endowments and Market Structure

• Sector endowments such as system size, resource mix, and geographical factors significantly influence the reform path and outcomes.
• Market structure includes demand composition, vertical integration, market concentration, production technologies, and degree of market opening.
• Reforms can alter market structure, affecting the behavior of market actors and sector performance.

Institutional Factors

• Institutional factors refer to the legal and regulatory frameworks that support the reform process.
• An electricity act or law is typically the starting point for reform implementation.
• Independent regulatory agencies are essential for overseeing the sector and protecting consumer rights.
• Measuring regulatory effectiveness remains a challenge due to the difficulty in distinguishing it from regulatory governance.

Conclusion and Future Directions

• The empirical literature on electricity sector reform is still in its early stages and lacks comprehensive and methodologically sound studies.
• There is a need for more detailed and robust analysis of the determinants and performance of reforms, particularly in developing countries.
• Future research should focus on untested questions, such as the effectiveness of different reform stages and the long-term impact of institutional and regulatory changes.

Summary of Findings

• Reforms have improved operating efficiency and urban access but have not consistently passed on efficiency gains to consumers or enhanced rural access.
• Institutional and regulatory frameworks are critical for successful reform.
• Theoretical debates remain unresolved, and empirical evidence is often limited or inconclusive.
• The complexity of electricity markets and the challenges of implementing reform highlight the need for careful planning and robust policy design.