Market Power and Price Exposure: Learning from Changes in Renewables' Regulation

Natalia Fabra and Imelda Imelda

No 14729, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: In many regulatory settings, regulators often debate whether to pay producers at fixed prices or at market-based prices. In this paper, we assess how firms' price exposure affects the degree of market power. We find that fixed prices mitigate market power by directly affecting the dominant firms' incentives to exert market power, while market-based prices do so indirectly by promoting the fringe firms' incentives to engage in arbitrage. To empirically identify these effects, we exploit a natural experiment that took place in the Spanish electricity market, where the regulator switched back and forth from paying renewable energies according to fixed or to market-based prices. Overall, we find that fixed prices were relatively more effective in weakening firms' market power, even though the market-based price regime led to more active price arbitrage.

Keywords: market power; Forward contracts; Arbitrage; Renewables; Renewables' auctions (search for similar items in EconPapers)
Date: 2020-05
New Economics Papers: this item is included in nep-com, nep-cta, nep-ene and nep-reg
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Working Paper: Market Power and Price Exposure: Learning from Changes in Renewables Regulation (2021)
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