Full Breakdown
The Iberian Solution: Lessons from the 2021-2023 Energy Crisis
9/17/2025, 2:26:07 PM
Overview of the Energy Crisis
The 2021-2023 energy crisis in Europe, exacerbated by geopolitical tensions and climate-related supply shocks, led to significant increases in gas prices, particularly following the slowdown of Russian pipeline deliveries. This surge had immediate repercussions on wholesale electricity markets, where gas-fired plants often set the marginal price, resulting in higher electricity costs for consumers and substantial profits for certain energy producers.
The Iberian Intervention
In response to the crisis, Spain and Portugal implemented a unique policy known as the "Iberian solution." This approach involved capping the gas costs for fossil-fuel generators, financed through a surcharge on consumers exposed to wholesale prices. The goal was to decouple electricity prices from gas costs, thereby reducing the windfall profits of energy producers while minimizing fiscal burdens on taxpayers. This intervention aimed to compress inframarginal rents, which had surged due to the crisis.
Distributional Consequences
Research conducted by Fabra et al. (2025) highlights the distributional impacts of the energy crisis and the Iberian intervention. The study simulated various scenarios to assess the effects on both electricity producers and consumers. It found that between July 2021 and June 2023, earnings for Spanish power plants increased by approximately €50 billion, with profits rising by €27 billion. The Iberian intervention effectively reduced these windfalls, leading to a decrease in household electricity bills. On average, the crisis increased bills by €338 per year, but the intervention mitigated this increase by about €149, accounting for nearly 59% of the relief.
Impact on Different Income Groups
The intervention's effects varied across income groups. While higher-income households experienced larger absolute savings, the relief was proportionally greater for lower-income families. The policy's design helped to alleviate the regressive nature of the crisis, where poorer households faced a larger relative increase in their electricity bills.
Geographic and Technological Factors
The study also revealed that geographic and technological factors influenced the crisis's impact. Areas with extreme weather conditions and higher reliance on electric heating or cooling faced greater burdens but also received more substantial relief from the Iberian intervention. Furthermore, non-price conservation measures played a significant role in reducing demand, indicating that effective policy design should combine upstream interventions with energy-saving initiatives.
Broader Implications and Future Considerations
The Iberian solution contrasts with other European approaches, such as retail price caps in the UK and Germany, which, while providing immediate relief, incurred significant fiscal costs and complicated retail competition. The experience of the 2021-2023 energy crisis underscores the importance of designing policies that consider distributional outcomes in advance, especially as climate variability and geopolitical tensions continue to pose risks for energy markets.
Verbatim Quotes
- “On average, the crisis increased household electricity bills by €338 per year (?1% of disposable income).” — Fabra et al. (2025)
Conclusion
As Europe navigates future energy challenges, the lessons learned from the Iberian solution may provide valuable insights into crafting effective and equitable energy policies that balance the interests of consumers and producers while promoting sustainability.
