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Supply Flexibility and risk transfer in electricity markets

Author

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  • Claude Crampes

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

  • Jérôme Renault

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - Comue de Toulouse - Communauté d'universités et établissements de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

The producers of electricity using dispatchable plants rely on partially flexible technologies to match the variability of both demand and production from renewables. We analyse upward and downward flexibility in a two-stage decision process where firms compete in quantities produced ex ante at low cost and ex post at high cost to supply a random residual demand. We first compute the first best and competitive outcomes, then we determine the subgame perfect equilibria corresponding to two market designs : one where all trade occurs in a spot market with known demand, the other where a day-ahead market with random demand is added to the ex-post market, first in a general setting, then using a quadratic specification. We show that being inflexible can be more profitable than being flexible. We also show that adding a day-ahead market tothe spot market increases welfare but transfers risks from firms to consumers.

Suggested Citation

  • Claude Crampes & Jérôme Renault, 2025. "Supply Flexibility and risk transfer in electricity markets," Working Papers hal-05289815, HAL.
    • Handle: RePEc:hal:wpaper:hal-05289815
    Note: View the original document on HAL open archive server: https://hal.science/hal-05289815v1
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