Spain and Portugal kept household electricity bills lower than most of their European neighbors during the 2022 energy crisis, thanks to a temporary cap on gas prices used in power generation. That mechanism, known informally as the “Iberian exception,” drew envy from policymakers across the continent. Now, as the EU finalizes permanent electricity market reforms built around long-term contracts and consumer protections, the central question is which parts of the Iberian playbook can scale across 27 member states and which parts only worked because of conditions unique to the Iberian Peninsula.
How the Iberian Gas Cap Actually Worked
When European wholesale power prices surged to unprecedented levels in 2022, Spain and Portugal persuaded the European Commission to approve a first-of-its-kind intervention. The Commission’s authorizing act, recorded as Decision SA.102569, described what it formally called a “production cost adjustment mechanism for the reduction of the electricity wholesale price in the Iberian market.” In practice, the scheme subsidized gas-fired power plants so they could bid into the wholesale market at a capped fuel cost, pulling down the marginal price that determined revenues for all generators and, ultimately, retail bills.
Analysis by Columbia University’s Center on Global Energy Policy found the measure had several positive effects, including lower Spanish wholesale prices and reduced volatility during the second half of 2022. The design exploited a geographic quirk: the Iberian Peninsula’s limited interconnection capacity with the rest of Europe ensured that artificially lower prices in Spain and Portugal could not easily spill over into neighboring markets. That semi-isolation made the subsidy fiscally manageable and contained its distortions, since the rest of the EU did not suddenly start importing large volumes of subsidized Iberian electricity.
The cap was also tightly time-bound and gradually adjusted. The reference gas price started well below prevailing market levels and was scheduled to rise in steps, reducing the subsidy as global gas prices eased. This phase-out clause was crucial to winning Commission approval, signaling that the Iberian exception was a temporary shock absorber rather than a permanent restructuring of the market.
Legal Challenges and the Court’s Verdict
The mechanism did not go unchallenged. A group of power generators, listed as PGI Spain and Others, argued before the EU General Court that the Commission’s approval of the scheme as compatible state aid was flawed. They contested the Commission’s formal sign-off, known as Decision C(2022) 3942, on grounds including discrimination between technologies and alleged overcompensation for some beneficiaries.
On 12 March 2025, the General Court’s Third Chamber, Extended Composition, issued its judgment in Case T‑596/22, rejecting those arguments and upholding the Commission’s assessment. The Court accepted that the extraordinary surge in gas prices constituted a serious disturbance in the economy, allowing the Commission to apply a more flexible state-aid framework. It also endorsed the view that the measure was proportionate, targeted at gas-fired units whose bids directly influenced the wholesale price, and limited in duration.
This ruling matters beyond Spain and Portugal. It confirms that EU state-aid rules can accommodate far-reaching price interventions in electricity markets when they are clearly framed as emergency responses. At the same time, the judgment implicitly draws a boundary: the Iberian mechanism was justified by its crisis context and its temporary nature. Any member state hoping to replicate a similar gas cap in normal times, or on a long-term basis, would face a much steeper legal burden and closer scrutiny of competitive impacts.
What the EU’s New Reform Actually Copies
The permanent reforms the EU adopted in 2024 borrow the spirit of the Iberian approach, if not its exact mechanics. The European Parliament approved an overhaul of the electricity market design that emphasizes long-term hedging tools and consumer safeguards; the package, described in the Parliament’s press communication, centers on Contracts for Difference, stronger protection for retail contracts, and broader access to long-term arrangements.
Under the reformed rules, member states are encouraged or required to use two-way Contracts for Difference (CfDs) when they support new low-carbon generation. CfDs mirror the Iberian exception’s core logic of decoupling consumer bills from short-term gas price spikes. They establish a reference price for electricity; when market prices rise above that level, generators pay the difference back to the state, which can channel the surplus to consumers, while if prices fall below the strike price, the state tops up generators’ revenues. Power purchase agreements (PPAs) between large consumers and renewable producers serve a similar stabilizing function, allowing industrial buyers to lock in multi-year prices.
The key difference is timing and focus. Spain’s gas cap was a retroactive, fuel-specific fix applied to an existing fleet of plants in the middle of a crisis. CfDs and PPAs are forward-looking instruments designed to shape investment decisions before the next shock arrives. By guaranteeing stable revenues for new renewable capacity, they aim to reduce the share of gas-fired generation that sets the marginal price, making future crises less damaging rather than simply cushioning their impact.
Where the Copy Breaks Down
The gap between wholesale price reform and actual household bills is where the EU’s ambitions encounter their toughest constraints. The EU Agency for the Cooperation of Energy Regulators has highlighted this disconnection in its recent oversight work. In a 2025 monitoring exercise, the agency reported limited competition and untapped flexibility in many national retail markets, with fixed-price and regulated contracts still dominating.
In such environments, even sharp declines in wholesale prices may take months or years to feed through to end users. Retailers often hedge far in advance, and households are locked into multi-year deals signed when prices were high. Spain’s regulated tariff structure, by contrast, indexed a large share of household bills directly to the day-ahead market, so the Iberian cap’s impact showed up quickly on consumer invoices. In countries with fragmented retail markets, low switching rates, or complex contract offerings, the transmission mechanism from wholesale relief to household benefit is much weaker.
Academic research has also questioned whether the EU’s reform package targets the most relevant risks. An analysis published in the journal Energy Economics argues that the Commission’s original reform proposal may overemphasize instruments like CfDs while underplaying the importance of demand-side measures and retail market design. The authors suggest that, without more attention to how consumers actually contract for electricity, wholesale-focused tools could leave many households exposed to future volatility.
Another strand of literature has scrutinized the Iberian exception itself. One study examining national responses to the 2021–2022 price shock notes that Spain and Portugal’s intervention was part of a broader toolbox of crisis measures, including tax reductions and targeted transfers, rather than a stand-alone solution. The paper, accessible via recent empirical work, underscores that replicating only the gas cap element elsewhere may miss complementary policies that helped cushion vulnerable consumers.
Design Lessons for the Next Crisis
For policymakers, the Iberian experience and the new EU framework together offer a set of design lessons rather than a single blueprint. First, emergency fuel caps can be compatible with EU state-aid law when they are clearly temporary, targeted at marginal price-setting units, and tailored to local grid conditions. The General Court’s judgment in T‑596/22 provides a legal roadmap for future crises, but it also makes clear that such measures are exceptional tools, not everyday instruments of industrial policy.
Second, long-term contracts like CfDs and PPAs can reduce structural exposure to gas prices, but only if they are paired with retail arrangements that pass savings through to end users. Research on market design, such as that discussed in recent policy-oriented studies, emphasizes the importance of aligning wholesale incentives with retail pricing, demand response, and flexibility services. Without such alignment, consumers may fund subsidies and hedging schemes without fully enjoying the benefits.
Finally, the Iberian exception highlights the value, and the limits, of national experimentation within a common market. Spain and Portugal leveraged their semi-isolated grid and specific tariff structures to deploy a bold intervention that would have been far harder to implement in a more interconnected hub like Germany. As the EU’s new rules bed in, the challenge will be to preserve room for such targeted innovation while ensuring that cross-border distortions remain manageable and that solidarity mechanisms are ready when the next crisis arrives.
The Iberian gas cap was never meant to be a permanent template. Yet its legacy is visible in the EU’s pivot toward long-term contracts, stronger consumer protections, and a more active role for governments in shaping electricity price formation. Whether that legacy ultimately delivers lower, more stable bills across the continent will depend less on the elegance of Brussels’ market design than on how effectively member states translate those tools into concrete retail offers for households and businesses.
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*This article was researched with the help of AI, with human editors creating the final content.
