The authors provide an overview of recent privatization experiences in Argentina, Brazil, and Chile. They focus on both achievements and outstanding problems in the electricity sector. They pay special attention to the issue of whether regulators can enforce compliance and sustain the spirit of reform - bringing the forces of competition to the sector - despite the unavoidable adjustments and fine-tuning that effective regulation requires. Among the lessons: Competition, rather than privatization, is the key to transforming the sector. For competition to work, several conditions must be met: 1) The primary energy source must be competitive for competition in the wholesale market to work. (In Chile, the fact that most of the water rights have been allocated to the major generator company seriously limits efficiency in the sector.) 2) Monopolistic stages must be formally separate from other stages, with clear rules for third-party access. (Here, the structure adopted by Argentina seems superior to that adopted by Chile.) 3) New entry into the system is the ultimate test of competition. The main gain from competition in electricity generation comes from the decentralization of decisions about when, how much, and what type of generation has to be brought to the market, rather than from short-term gains from minimizing costs. Overall, vertical and horizontal separation in the sector increases rather than reduces the burden and complexity of regulation. In a disintegrated system, the issues that arose in a traditional monopoly situation (fair rate of return, asset base, tariff to final consumers, and so on) are significantly increased. New issues include third-party access, the promotion of competition, interconnection pricing, and consistency of regulations across stages of competitive development. Restructuring and privatization are still in their early stages so lessons drawn from experience must be considered tentative.
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