Notwithstanding academic and regulatory interests as well as empirical evidence, to date the effect of contracts on competition in electricity markets is a very controversial issue. We suggest an original approach to shed light on this debate. Modeling competition by mean of conjectural variations we demonstrate that anti-competitive effects follow the upsurge of discrimination practices. Altering the time distribution of the perfect arbitrage constraint (i.e. ex-post in spite of ex-ante) we put a bridge between IO and financial models on price manipulation. Endogenizing forward demand we provide a rationale for shifting dominant attitudes to forward markets. Finally, studying sequential choices we balance quantity and price competition with Stackelberg leadership. Simulations and qualitative estimates support our findings.
Im-perfectly competitive contract markets for electricity
BONACINA, MONICA;CRETI', ANNA;
2008
Abstract
Notwithstanding academic and regulatory interests as well as empirical evidence, to date the effect of contracts on competition in electricity markets is a very controversial issue. We suggest an original approach to shed light on this debate. Modeling competition by mean of conjectural variations we demonstrate that anti-competitive effects follow the upsurge of discrimination practices. Altering the time distribution of the perfect arbitrage constraint (i.e. ex-post in spite of ex-ante) we put a bridge between IO and financial models on price manipulation. Endogenizing forward demand we provide a rationale for shifting dominant attitudes to forward markets. Finally, studying sequential choices we balance quantity and price competition with Stackelberg leadership. Simulations and qualitative estimates support our findings.
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