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Diskussionspapiere - Hannover Economic Papers (HEP)

Regulatory Objectives and the Intensity of Unbundling in Electricity Markets

Autor: Henrik Lindemann
Nummer: 544, Jan 2015, pp. 53
JEL-Class: D73,L12,L13,L42,L50,L51,L94

Despite the positive effect electricity grids separated from generation and supply by ownership are expected to have on the level of competition in the non-network activities, several EU member states still adhere to a solely legally unbundled transmission grid. This choice might be induced by regulators focusing on objectives other than the promotion of consumer interests: theoretically analyzing the decisions an authority takes on both the unbundling regime and the grid charge when it supervises a network monopolist providing a downstream Cournot duopoly with capacity, we find an agency pursuing consumer-oriented goals to always implement Ownership Unbundling. For a regulator acting in the interests of the industry or the government, though, results suggest the authority to be indifferent between Legal and Ownership Unbundling; minor potential drawbacks of a network separated by ownership for the agency or the companies might then tip the scales and cause the regulator to adhere to Legal Unbundling.


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