Europe’s electricity markets are revealing a growing divide between systems heavily tied to fossil fuels and those that have reduced that dependence. As global gas prices rise due to geopolitical tensions, electricity costs surge in countries where gas sets the marginal price. In contrast, systems with strong low-carbon generation are showing greater stability and affordability. This contrast challenges the long-standing belief that renewables and electrification inevitably lead to higher costs.
A clear example of this shift can be seen in the Iberian Peninsula, where Spain and Portugal have invested heavily in wind and solar power while maintaining relatively limited interconnection with the broader European grid. This has created a localized pricing dynamic that is less influenced by continental gas markets. Wholesale electricity prices in this region have remained significantly lower—typically around €60–70/MWh—compared to much higher levels in more gas-dependent countries.
The key factor is not simply the presence of renewables, but how the system is structured. Electricity prices in Europe are generally set by the “merit order,” where the last and often most expensive unit of generation—frequently gas—determines the market price. In systems still dominated by fossil fuels, even large amounts of low-cost renewable energy do not necessarily reduce prices. However, in the Iberian Peninsula, high renewable penetration weakens the link between electricity prices and gas markets, allowing cheaper generation to have a stronger influence on pricing.
This structural difference provides an important advantage. By reducing reliance on gas, the Iberian Peninsula is less exposed to global fuel price volatility and geopolitical disruptions. As a result, electricity prices remain more stable even during periods of market stress. This stands in contrast to countries like Germany and Italy, where prices have recently exceeded €150/MWh due to stronger exposure to gas-driven pricing.
France offers a similar outcome through a different approach. Its reliance on nuclear energy, rather than renewables, also limits dependence on fossil fuels and results in relatively stable prices. The common thread across these systems is not the specific technology used, but the extent to which fossil fuels influence price formation. Reducing that influence leads to more predictable and often lower electricity costs.
Concerns about reliability in renewable-heavy systems are also being reconsidered. Evidence from Spain shows that system stability depends more on grid management, flexibility, and infrastructure than on the energy source itself. This reinforces the idea that integrating renewables is less about technological limitations and more about adapting the broader system to support them.
Ultimately, the experience of the Iberian Peninsula demonstrates that electrification can serve not only as a climate solution but also as a strategy for price stability. When electricity systems are no longer tied to volatile fossil fuel markets, they become more resilient and economically competitive. The divergence now seen across Europe reflects long-term policy and investment choices, highlighting that the true cost lies not in transitioning to clean energy, but in remaining exposed to fossil fuel volatility.