18OCT

Spain eyes data-centre rule before poll

3 min read

13:11UTC

Óscar López said on 8 October that he hopes to approve Spain's data-centre royal decree shortly, before the 29 November general election, with urgent processing planned to get it through cabinet.

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Key takeaway

Spain's government wants its data-centre decree approved before the 29 November election.

Óscar López, Spain's Digital Transformation minister, said on 8 October that he hopes to approve the data-centre royal decree (a regulation the cabinet can issue without a parliamentary vote) "shortly", ahead of the 29 November general election⁠¹. He spoke in Madrid at the close of the government's fourth international advisory council on artificial intelligence. The government plans urgent processing to take the text to the Consejo de Ministros (the cabinet) and into the official gazette before the vote.

The consultation drew more than 600 submissions, and ministries are still reconciling a common position. Spain's competition and markets regulator has backed the draft, according to the Demócrata report, while the Consejo de Estado, the state's advisory council, has yet to give its opinion.

López said only that the final text will take submissions into account. Nothing reported so far changes the 80% hourly-matched renewables test (80% of the power used in every hour must come from renewables, so daytime solar cannot cover a night shift on paper) that the government of Aragon, the north-eastern region, called unmeetable when consultation closed in September. If the decree is not approved before the campaign, whichever government follows could drop it.

Deep Analysis

In plain English

A royal decree in Spain is a regulation the cabinet can approve without a vote in parliament. Spain is preparing one to set rules for data centres, the buildings full of computers that run online services. The draft sets limits on energy and water use and requires most power to come from renewables every hour. More than 600 people and organisations sent comments. Spain votes in a general election on 29 November. The minister wants the rules approved before then.

Deep Analysis

Root Causes

Spain's Law 50/1997 on the Government limits a caretaker government to ordinary business once an election has been held. A decree not approved before 29 November may therefore wait months, until a new government forms.

The EU Energy Efficiency Directive of 2023 requires data centres of 500 kW and above to report energy and water performance. Member states need national rules to apply it, which gives the Spanish decree a deadline beyond domestic politics.

Regional governments compete for data-centre investment with their own fast-track approvals. A national decree with strict supply rules cuts across those deals, which explains the friction between ministries.

What could happen next?

Risk
If the decree misses the election, a caretaker government may be unable to approve it for months.
Short term · Assessed
Consequence
The hourly renewables clause may be softened to secure agreement between ministries.
Immediate · Suggested
Precedent
An approved decree would make Spain one of the first EU states to set binding hourly renewables rules for data centres.
Medium term · Suggested

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: Spain's Royal Decree 900/2015, the self-consumption rule critics called the sun tax, was approved on 9 October 2015, ten weeks before the 20 December election. It survived the change of government for three years until Royal Decree-law 15/2018 repealed its charges in October 2018.

Counter-parallel: In 2017 the US Congress used the Congressional Review Act to strike down rules finalised in the last months of the Obama administration, including the Stream Protection Rule. Late rules there fell within weeks, where Spain's late decree lasted years.

The 80% hourly-matched renewables test would push operators towards storage, wind contracts with night output, or firm low-carbon supply. Each costs more than daytime solar, so the clause raises operating costs most for sites in solar-heavy regions such as Aragon.

For investors, the 29 November election sets the clock. A decree approved before the election sets known rules for projects now in planning, while a delay leaves them facing a new government's choices.

Consensus view: Spain's competition and markets regulator has backed the draft, according to Demócrata, which treats common efficiency and supply rules as a way to set one national standard rather than a patchwork of regional deals. The decree also gives Spain a vehicle for the EU Energy Efficiency Directive's data-centre reporting duties.

Counter-view: Aragon's regional government called the 80% hourly-matched renewables test unmeetable when consultation closed, while Ecologistas en Acción has challenged Aragon's own data-centre agreements in court. The two sides attack the draft from opposite ends: one says it blocks investment, the other that regional approvals already go too far.

Key tension: Whether hourly matching can survive the rush, since it is the clause most likely to be softened to win agreement between ministries before the election.

Sources:Demócrata

Mentions:Óscar López →CNMC →Aragón →Ministry for the Ecological Transition and the Demographic Challenge →Spain →Madrid →Ecologistas en Acción →US Congress →Spanish Council of Ministers →Energy Efficiency Directive (EU) 2023/1791 →Spanish Council of State →

First Reported In

Update #16 · Malaysia bills data centres for idle grid

Demócrata· 18 Oct 2026

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Causes and effects

Caused by

Spain drafts hourly renewables test for data centres

López's push to approve the decree follows the September close of MITECO's consultation on the draft.

Occurred 10 Sept 2026

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This Event

Spain eyes data-centre rule before poll

If the decree misses the election, whichever government follows could drop it, along with the hourly renewables test that Aragon called unmeetable.

Different Perspectives

Nexus Core Systems

Hired FiveNines Group, in a deal announced on 8 October, for early design, feasibility and permit work on a 20 MW AI data centre near Casablanca. It is the first named site of a planned 180 MW programme, still at concept design.

MC Digital Realty

Began building the 24 MW KIX15 data centre in Osaka Prefecture on 7 October, due to open in the fourth quarter of 2028. The joint venture of Digital Realty and Mitsubishi Corporation says it will then run 10 data centres in Japan with about 220 MW of IT capacity.

KT Cloud

Said on 7 October that it and Hyundai Engineering will build a 50 MW AI data centre at Cheongna, Incheon, from the fourth quarter of 2026. Completion is due in the first quarter of 2030, part of KT Cloud's target of more than 1 GW of AI capacity by 2031.

Town of Trebbin

Said on 7 October that work has begun on two data-centre buildings and a substation under building permits already granted. The operating permit under the Federal Immission Control Act is still with Brandenburg's environment agency, so the town postponed its public presentation.

Óscar López, Digital Transformation minister

Said in Madrid on 8 October that he hopes to approve the data-centre royal decree shortly, with urgent processing to reach the cabinet before the 29 November election. He said the final text will take the more than 600 submissions into account, without saying what changes.

Hydro-Québec

Defended its proposed Tarif CD before the Régie de l'énergie du Québec from 1 to 9 October, a rate for data centres of 5 MW or more that adds a premium when peak demand stays below 60% of forecast. Industrial consumers filed their own wording for the clause on who the rate covers.

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.