Bidding in an Electricity Pay-as-Bid Auction
One of the main elements of the current reform of electricity trading in the UK is the change from a uniform price auction in the wholesale market to discriminatory pricing. We analyse this change under two polar market structures (perfectly competitive and monopolistic supply), with demand uncertainty. We find that under perfect competition there is a trade-off between efficiency and the level of consumer surplus betwen the two auction roles. We also establish that a move from uniform to discriminatory pricing under monopoly conditions has a negative impact on profits and output (weakly), a positive impact on consumer surplus, and ambiguous implications for welfare and average prices.
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|Date of creation:||01 Sep 2001|
|Date of revision:|
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Web page: http://www.economics.ox.ac.uk/
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