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Economic effects in wholesale electricity markets from endogenous long-term forward contracts indexed to spot conditions

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  • Gallego, Camilo A.

Abstract

This analysis examines the economic impact of endogenous forward contracts (EFCs) in wholesale electricity markets, where contract hedging adjusts to spot market conditions rather than remaining fixed. This study applies economic theory to model the effects of forward contracts on spot prices over time and develop an econometric strategy for evaluation. By applying this framework to the Colombian electricity market, we find that a 5% share of EFCs can raise spot prices by 23%, increasing consumer costs by more than $700 million annually. These effects may intensify during extreme weather events, such as El Niño, exposing risks in market design. Our findings challenge the assumption that forward contracts inherently enhance competition and price stability, showing that firms with market power can exploit them. Results remain robust and statistically significant under various scenarios, including different opportunity costs. These insights underscore the need for regulatory oversight to ensure forward contracting fosters competitive outcomes, providing a strong foundation for improving market regulation in Colombia and other jurisdictions.

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  • Gallego, Camilo A., 2025. "Economic effects in wholesale electricity markets from endogenous long-term forward contracts indexed to spot conditions," Utilities Policy, Elsevier, vol. 95(C).
    • Handle: RePEc:eee:juipol:v:95:y:2025:i:c:s095717872500061x
    DOI: 10.1016/j.jup.2025.101946
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    1. David P. Brown & Andrew Eckert, 2022. "Pricing Patterns in Wholesale Electricity Markets: Unilateral Market Power or Coordinated Behavior?," Journal of Industrial Economics, Wiley Blackwell, vol. 70(1), pages 168-216, March.
    2. Natalia Fabra & Mar Reguant, 2014. "Pass-Through of Emissions Costs in Electricity Markets," American Economic Review, American Economic Association, vol. 104(9), pages 2872-2899, September.
    3. Anderson, Edward J. & Hu, Xinin & Winchester, Donald, 2007. "Forward contracts in electricity markets: The Australian experience," Energy Policy, Elsevier, vol. 35(5), pages 3089-3103, May.
    4. Ritz, Robert A., 2016. "How does renewables competition affect forward contracting in electricity markets?," Economics Letters, Elsevier, vol. 146(C), pages 135-139.
    5. Newbery, David, 2018. "Policies for decarbonizing a liberalized power sector," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy (IfW Kiel), vol. 12, pages 1-24.
    6. Mummolo, Jonathan & Peterson, Erik, 2018. "Improving the Interpretation of Fixed Effects Regression Results," Political Science Research and Methods, Cambridge University Press, vol. 6(4), pages 829-835, October.
    7. Aïd, René & Bahlali, Mohamed & Creti, Anna, 2023. "Green innovation downturn: The role of imperfect competition," Energy Economics, Elsevier, vol. 123(C).
    8. Stock, James H & Wright, Jonathan H & Yogo, Motohiro, 2002. "A Survey of Weak Instruments and Weak Identification in Generalized Method of Moments," Journal of Business & Economic Statistics, American Statistical Association, vol. 20(4), pages 518-529, October.
    9. de Frutos, María-Ángeles & Fabra, Natalia, 2012. "How to allocate forward contracts: The case of electricity markets," European Economic Review, Elsevier, vol. 56(3), pages 451-469.
    10. Anderson, Edward J. & Hu, Xinmin, 2008. "Forward contracts and market power in an electricity market," International Journal of Industrial Organization, Elsevier, vol. 26(3), pages 679-694, May.
    11. Larsen, Erik R. & Dyner, Isaac & Bedoya V., Leonardo & Franco, Carlos Jaime, 2004. "Lessons from deregulation in Colombia: successes, failures and the way ahead," Energy Policy, Elsevier, vol. 32(15), pages 1767-1780, October.
    12. Akshaya Jha & Frank A. Wolak, 2023. "Can Forward Commodity Markets Improve Spot Market Performance? Evidence from Wholesale Electricity," American Economic Journal: Economic Policy, American Economic Association, vol. 15(2), pages 292-330, May.
    13. David P. Brown & Andrew Eckert, 2017. "Electricity market mergers with endogenous forward contracting," Journal of Regulatory Economics, Springer, vol. 51(3), pages 269-310, June.
    14. repec:bla:jindec:v:47:y:1999:i:1:p:107-24 is not listed on IDEAS
    15. Borenstein, Severin, 2000. "Understanding Competitive Pricing and Market Power in Wholesale Electricity Markets," The Electricity Journal, Elsevier, vol. 13(6), pages 49-57, July.
    16. David P. Brown and David E. M. Sappington, 2023. "Load-Following Forward Contracts," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3).
    17. Suarez, Carlos, 2022. "Private management and strategic bidding behavior in electricity markets: Evidence from Colombia," Energy Economics, Elsevier, vol. 111(C).
    18. Jan De Loecker & Jan Eeckhout & Gabriel Unger, 2020. "The Rise of Market Power and the Macroeconomic Implications [“Econometric Tools for Analyzing Market Outcomes”]," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 135(2), pages 561-644.
    19. Ressner, Ludwig & Liski, Matti & Montero, Juan-Pablo, 2010. "Corrigendum to "Forward trading and collusion in oligopoly" [J. Econ. Theory 131 (1) (2006) 212-230]," Journal of Economic Theory, Elsevier, vol. 145(6), pages 2496-2497, November.
    20. Ausubel, Lawrence M. & Cramton, Peter, 2010. "Using forward markets to improve electricity market design," Utilities Policy, Elsevier, vol. 18(4), pages 195-200, December.
    21. Williams, Olayinka & Green, Richard, 2022. "Electricity storage and market power," Energy Policy, Elsevier, vol. 164(C).
    22. Koichiro Ito & Mar Reguant, 2016. "Sequential Markets, Market Power, and Arbitrage," American Economic Review, American Economic Association, vol. 106(7), pages 1921-1957, July.
    23. MURPHY, Frédéric & SMEERS, Yves, 2010. "On the impact of forward markets on investments in oligopolistic markets with reference to electricity," LIDAM Reprints CORE 2216, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    24. Fabra, Natalia, 2023. "Reforming European electricity markets: Lessons from the energy crisis," Energy Economics, Elsevier, vol. 126(C).
    25. James Bushnell, 2007. "Oligopoly equilibria in electricity contract markets," Journal of Regulatory Economics, Springer, vol. 32(3), pages 225-245, December.
    26. repec:eme:mfppss:03074350510769703 is not listed on IDEAS
    27. van Eijkel, Remco & Kuper, Gerard H. & Moraga-González, José L., 2016. "Do firms sell forward for strategic reasons? An application to the wholesale market for natural gas," International Journal of Industrial Organization, Elsevier, vol. 49(C), pages 1-35.
    28. Frank Wolak, 2000. "An Empirical Analysis of the Impact of Hedge Contracts on Bidding Behavior in a Competitive Electricity Market," International Economic Journal, Taylor & Francis Journals, vol. 14(2), pages 1-39.
    29. Mahenc, P. & Salanie, F., 2004. "Softening competition through forward trading," Journal of Economic Theory, Elsevier, vol. 116(2), pages 282-293, June.
    30. René Aïd & Mohamed Bahlali & Anna Creti, 2023. "Green innovation downturn: the role of imperfect competition," Post-Print hal-04317679, HAL.
    31. Mastropietro, Paolo & Rodilla, Pablo & Rivier, Michel & Batlle, Carlos, 2024. "Reliability options: Regulatory recommendations for the next generation of capacity remuneration mechanisms," Energy Policy, Elsevier, vol. 185(C).
    32. Richard Green, 1999. "The Electricity Contract Market in England and Wales," Journal of Industrial Economics, Wiley Blackwell, vol. 47(1), pages 107-124, March.
    33. Dzikri Firmansyah Hakam, 2023. "Mitigating Market Power and Promoting Competition in Electricity Markets through a Preventive Approach: The Role of Forward Contracts," Energies, MDPI, vol. 16(8), pages 1-31, April.
    34. Ali Hortaçsu & Fernando Luco & Steven L. Puller & Dongni Zhu, 2019. "Does Strategic Ability Affect Efficiency? Evidence from Electricity Markets," American Economic Review, American Economic Association, vol. 109(12), pages 4302-4342, December.
    35. Pollitt, M. G., 2023. "Locational Marginal Prices (LMPs) for Electricity in Europe? The Untold Story," Cambridge Working Papers in Economics 2352, Faculty of Economics, University of Cambridge.
    36. Blake Shaffer & Frank A. Wolak, 2024. "Market Design for the 21st Century: Recommendations for Alberta’s Power Market," SPP Research Papers, The School of Public Policy, University of Calgary, vol. 17(02), February.
    37. Blaise Allaz & Jean-Luc Vila, 1993. "Cournot Competition, Forward Markets and Efficiency," Post-Print hal-00511806, HAL.
    38. Correa-Giraldo, Manuel & Garcia-Rendon, John J. & Perez, Alex, 2021. "Strategic behaviors and transfer of wholesale costs to retail prices in the electricity market: Evidence from Colombia," Energy Economics, Elsevier, vol. 99(C).
    39. Woo, Chi-Keung & Horowitz, Ira & Hoang, Khoa, 2001. "Cross hedging and forward-contract pricing of electricity," Energy Economics, Elsevier, vol. 23(1), pages 1-15, January.
    40. Gallego, Camilo A., 2022. "Intertemporal effects of imperfect competition through forward contracts in wholesale electricity markets," Energy Economics, Elsevier, vol. 107(C).
    41. Mastropietro, Paolo & Rodilla, Pablo & Rangel, Lina Escobar & Batlle, Carlos, 2020. "Reforming the colombian electricity market for an efficient integration of renewables: A proposal," Energy Policy, Elsevier, vol. 139(C).
    42. Severin Borenstein & James B. Bushnell & Frank A. Wolak, 2002. "Measuring Market Inefficiencies in California's Restructured Wholesale Electricity Market," American Economic Review, American Economic Association, vol. 92(5), pages 1376-1405, December.
    43. Huisman, Ronald & Koolen, Derck & Stet, Cristian, 2021. "Pricing forward contracts in power markets with variable renewable energy sources," Renewable Energy, Elsevier, vol. 180(C), pages 1260-1265.
    44. David P. Brown & David E. M. Sappington, 2023. "Load-Following Forward Contracts," The Energy Journal, , vol. 44(3), pages 187-222, May.
    45. Álvarez-Uribe, Karla C. & Arango-Aramburo, Santiago & Larsen, Erik R., 2018. "Forward contracts in electricity markets and capacity investment: A simulation study," Utilities Policy, Elsevier, vol. 54(C), pages 1-10.
    46. Frederic Murphy & Yves Smeers, 2010. "On the Impact of Forward Markets on Investments in Oligopolistic Markets with Reference to Electricity," Operations Research, INFORMS, vol. 58(3), pages 515-528, June.
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