Spain plans tighter data-centre rules before November election

Spain intends to advance tighter rules for future data centres before its November 29 parliamentary election, Digital Transformation Minister Oscar Lopez said in Madrid on October 8. The proposed oversight addresses electricity and water consumption as the country seeks investment from companies including Amazon Web Services and Microsoft, Reuters reported.

“The government's intention is to move forward with that decree,” Lopez told an artificial-intelligence conference. He said the measure would not require parliamentary approval, a significant detail for Spain’s minority leftist government ahead of the early election.

Ministries were still examining public-consultation submissions and working towards a common position, Lopez said. His remarks establish an intention to proceed; they do not establish that the decree has been adopted or when its requirements would take effect.

What Spain’s proposed data-centre rules require

The Ministry for the Ecological Transition and the Demographic Challenge, known as MITECO, announced its draft on August 27. Its consultation record lists September 10 as the submission deadline and marks the process closed.

The ministry’s August explanation also calls for additional renewable generation installed during the 18 months before a centre begins operating, secured through self-generation or power-purchase agreements. These remain proposed requirements, subject to the government’s review of consultation responses.

Water and energy efficiency would be linked to the highest European labelling category, using Water Usage Effectiveness and Power Usage Effectiveness measures. The proposal should not be read as establishing a final numerical water-use limit: the final requirements have not been settled.

The August proposal envisages escalating electricity charges for non-compliance and, ultimately, loss of grid-access rights. Pending projects would have six months to adapt, or three months when awaiting a grid-access auction. They could alternatively surrender access rights without forfeiting their guarantees.

Which operators and projects could be affected

The consultation sets a main threshold of at least 1 megawatt of grid-access capacity. Reporting requirements instead use a threshold of 500 kilowatts of IT capacity. Those are different measures, so the reporting threshold should not be treated as the main grid-access threshold.

The consultation also proposes that operators be established in the European Union and retain operational data under their control within the EU. It includes oversight of direct subcontractors and safeguards against third-country access requests that conflict with applicable law.

Reuters described investment as concentrated mainly in the northeastern region of Aragon. AWS and Microsoft said their plans there remained unchanged, while both urged Spain to protect long-term investment through legal certainty and predictability. Their responses do not establish project-specific compliance costs or construction delays.

Why electricity demand matters to Spain

MITECO’s consultation rationale cites more than 6 gigawatts of transmission-access capacity granted since the December 27, 2023 decree-law, plus around another 6 gigawatts of distribution access since 2020. These figures represent access permissions over different periods, not measured consumption or operating data-centre capacity.

The ministry contrasts those permissions with Spain’s AI strategy projection of 2.5 gigawatts of computing capacity in 2030, equivalent to 3.5–4 gigawatts of electricity demand. It argues that additional demand without proportional renewable expansion could increase gas generation and consumer electricity costs. That is the government’s rationale, not a demonstrated effect of the proposed rules.

Global growth provides context, not a Spanish forecast

The International Energy Agency estimates that global data-centre electricity demand grew 17% in 2025, while demand from AI-focused centres grew 50%. Its central projection puts worldwide consumption at roughly 950 terawatt-hours in 2030, up from 485 in 2025, reaching around 3% of global electricity demand.

The agency identifies supply-chain bottlenecks as constraints on near-term expansion. It also says efficiency gains per AI task coexist with rising usage and more energy-intensive applications. Its global estimates do not measure Spanish consumption or establish whether Spain’s proposed decree will achieve its objectives.

For Spain, the immediate outstanding step is agreement among ministries following consultation. Lopez’s announcement leaves the final text and implementation date unresolved, while the August draft provides the clearest account of the requirements under consideration.