Critics of the Almaraz extension warn that prioritizing the continued operation of aging nuclear reactors risks stalling Spain's commitment to a full renewable energy transition. By keeping the plant open until 2030, the government may inadvertently reduce the urgency to invest in the grid infrastructure, battery storage, and renewable capacity needed to replace nuclear power entirely. Skeptics argue that the 2019 phase-out agreement was a carefully negotiated roadmap designed to provide certainty for both the energy sector and the public, and that reopening it undermines the credibility of long-term climate policy.
There are also concerns regarding the long-term costs associated with maintaining older nuclear infrastructure. While the plant is currently deemed safe, critics point out that the risks and maintenance requirements for reactors built in the early 1980s naturally increase over time. Furthermore, the issue of radioactive waste management remains a significant, unresolved challenge that persists as long as the reactors are active. Opponents suggest that instead of extending the life of nuclear assets, public and private resources should be fully focused on accelerating the deployment of wind, solar, and modern energy management systems.
Finally, some observers caution that the push for an extension is driven more by the commercial interests of the plant's owners than by the broader public interest. They argue that if the government grants this extension, it sets a precedent that could lead to further delays for other plants, effectively locking Spain into a nuclear-dependent model for years longer than planned. For those focused on a clean, sustainable future, the focus must remain on meeting the established 2035 deadline to ensure a complete and irreversible shift away from nuclear energy.