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Soaring electricity prices in the day-ahead Iberian market: policy insights, regulatory challenges and lack of system flexibility

Bento, P.M.R. ; Mariano, S.J.P.S. ; Carvalho, P. M. S. C. ; Calado, M.R.A. ; Pombo, J.

International Journal of Energy Sector Management Vol. 18, Nº 2, pp. 312 - 333, February, 2024.

ISSN (print): 1750-6220
ISSN (online): 1750-6220

Scimago Journal Ranking: 0,65 (in 2023)

Digital Object Identifier: 10.1108/ijesm-07-2022-0007

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Abstract
This study is a targeted review of some of the major changes in European regulation that guided energy policy decisions in the Iberian Peninsula, and how they may have aggravated the problem of lack of flexibility. It also assesses some of the proposed short-term solutions to address this issue considering the underlying root causes and suggests a different course of action, that in turn, could help alleviate future market strains.
The evolution of the most important (macro) energy and price-related variables in both Portugal and Spain is assessed using market and grid operator data. In addition, the authors present critical viewpoints on some of the most recent EU and national regulation changes (official document analysis).
The regulatory agenda has successfully promoted a rapid adoption of renewables (main goal), although with insufficient diversification of generation technologies. The compulsory closings of thermal plants and an increased tax (mainly carbon) added pressure towards more environmentally friendly thermal power plants. However, inevitably, this curbed the bidding price competitiveness of these producers in an already challenging market framework. Moving forward, decisions must be based on “a bigger picture” that does not neglect system flexibility and security of supply and understands the specificities of the Iberian market and its generation portfolio.
This work provides an original account of unprecedented spikes in energy prices in 2021, specifically in the Iberian electricity market (MIBEL). This acute situation worries consumers, industry, and governments. Underlining the instability of the market prices, for the first time we discuss how some of the most important regulatory changes, and their perception and absorption by involved parties, contributed to the current environment. In addition, we stress that if flexibility is overlooked, the overall purpose of having an affordable and reliable system is at risk.