Data-centre reporting and regulation in Sweden: the 500 kW row, not a league table

Reading order

Start with Lag (2025:570). That is the Swedish act. Energimyndigheten’s English page restates it: owners or operators, the 500 kilowatt installed IT power-demand threshold, the yearly report to the EU database, and the start date 1 July 2025. The same page names an exception: the duty does not apply to data centres that, under the Protective Security Act (2018:585), are used for security-sensitive activities, defence purposes or civil contingency purposes, or where services are provided exclusively for such activities. Read the exception as an exception. Do not turn it into a public list of exempt halls. This site does not have such a list.

Then stay on Energimyndigheten’s English reporting page for the practical calendar: notification to the agency by 27 April 2026, reporting by 15 May 2026 for calendar year 2025. After notification the company must apply for access rights to the EU database. It is also the page that points at the aggregated public view. A reader who wants a named Swedish hall inside that public view will not find it on this page. Then open Directive (EU) 2023/1791. Article 12 is the reporting article. Delegated Regulation (EU) 2024/1364 Annexes I and II are the rows that list energy, water, waste heat and whether the data centre contributes to grid services. Article 12.4 is the code-of-conduct encouragement at or above 1 megawatt. Article 26.6 is the waste-heat sentence above 1 megawatt — and the English page still calls the Swedish legislative proposal a consultation that ran until 4 November 2025. Do not write Article 26.6 as if the proposal had already become the Swedish operating rule on this page’s review date.

Then open the Commission pages already in the registry: the EU data-centre energy page and the 2024/1364 delegated act. Those pages explain the Union database and the delegated reporting detail. A later Commission analysis of an earlier reporting year is an aggregated analysis. A rating-scheme feedback window is a draft consultation. This page will not invent a Swedish score from a draft window, and it will not turn an aggregated analysis into a named-hall table for 2025.

• Lag (2025:570) and the English Energy Agency page first — 500 kW, 1 July 2025, owners or operators, Protective Security Act exception.
• 27 April 2026 notify, 15 May 2026 report for 2025 — two dates, two jobs.
• EED 2023/1791 Article 12, 2024/1364 Annex I/II, Article 12.4 at 1 MW, Article 26.6 as proposal through 4 November 2025.
• Commission database last — aggregated public view, draft rating window.

What the law separates

The 500 kilowatt threshold is an installed IT power-demand threshold for who must report. It is not a published list of Swedish halls that sit above it. A campus that publishes 12 megawatts of site power, 250 megawatts of access, or 16,000 GPUs is not automatically filed on this page as a 2025 reporter. Reporting status is a filing fact. This site does not have the EU database login and does not publish a named filer list.

The two 2026 dates are different jobs. 27 April 2026 is notification to Energimyndigheten. 15 May 2026 is the report for calendar year 2025. A reader who collapses them into ”reporting in April” has already left the English page. The start of the act on 1 July 2025 is a third date. It is when the Swedish duty exists. It is not the same day as the first report deadline. The English page also says companies that have already notified and reported keep their reference number and do not need a new notification.

Annex I and Annex II themes — energy, water, waste heat, grid-service contribution — are reporting themes. They are not a published Swedish WUE, a published Swedish waste-heat megawatt, or a published Swedish grid-services megawatt for a named hall. The water-use guide already owns WUE as an ISO definition. The district-heating guide already owns named heat-reuse sentences. This page does not steal those matrices. It only says those themes appear in the reporting annexes.

Article 12.4 at or above 1 megawatt is an encouragement to promote the EU code of conduct. Encouragement is not a Swedish licence condition on this page. Article 26.6 above 1 megawatt is waste-heat language that the English page still describes as a proposal consulted through 4 November 2025. A proposal consulted through a date is not, on this page, rewritten as a final Swedish duty. Information in the EU database is subject to confidentiality under Chapter 30, Section 23 of the Public Access to Information and Secrecy Act (2009:400). Confidentiality is not a public hall score.

The public aggregated view matters because it is the only public view this page is willing to describe. Member-state and Union aggregates can exist without a named-hall cell. Readers who want a hall-by-hall energy table will not get it from the sources cited here. A later Commission rating scheme, once published, would still need its own dated row. A feedback window is not that row.

What named primary sources show

Lag (2025:570), as restated on Energimyndigheten’s English page, shows the 1 July 2025 start, the 500 kilowatt installed IT power-demand threshold, owners or operators as the reporting parties, the yearly EU-database duty, and the Protective Security Act exception. The same English page shows 27 April 2026 notification and 15 May 2026 reporting for 2025, the access-rights steps, confidentiality under Chapter 30, Section 23, and the aggregated public view. Directive (EU) 2023/1791 Article 12 and Delegated Regulation (EU) 2024/1364 Annexes I and II show the EU reporting themes. Article 12.4 shows the 1 megawatt code-of-conduct encouragement. Article 26.6 shows waste-heat language that remained a proposal through the 4 November 2025 consultation. None of those URLs is a named Swedish hall score.

A matrix instead of a league table

Thresholds, dates and annex themes are fillable cells. Named-hall scores and exemption lists are not.

Common misreads

The first misread is to treat 500 kilowatts of installed IT power demand as 500 kilowatts of site connection, or as a GPU count. The act names installed IT power demand. Other guides already keep site power, access and GPU count on other rows. The second is to collapse 27 April and 15 May 2026 into one reporting day. Notification and reporting are two jobs. The third is to treat the Protective Security Act exception as a public register of secret halls. The exception is a legal carve-out. It is not a list.

The fourth is to treat Article 12.4 as a Swedish licence condition, or Article 26.6 as a final duty on this review date. Encouragement and a closed consultation stay labelled. The fifth is to treat an aggregated Member State cell as EcoDataCenter Falun, atNorth SWE01 or Meta Luleå. The public view is aggregated. The sixth is to treat a later rating-scheme window as a published Swedish score. Feedback on a draft is not a hall grade.

What to ask next

If a brief says a Swedish hall ”must report,” ask which installed IT power-demand figure sits above 500 kilowatts and which legal entity is the owner or operator. If the brief quotes a public score, ask whether the cell is a Member State aggregate or a named hall. If the brief cites waste-heat duty above 1 megawatt, ask whether the source is still the 4 November 2025 proposal row.

Then open the energy-efficiency page, the water-use page, the district-heating page and the standards page. A reporting theme is not a measured WUE, not a delivered heat year and not a PUE certificate.

1. Installed IT power demand named, not site power or GPU count.
2. 27 April notification kept apart from 15 May reporting.
3. Exception treated as a carve-out, not a public list.
4. Public cell labelled aggregate — or left empty.
5. Article 26.6 still labelled proposal on this review date.

What this does and does not prove

This page proves that Swedish Act (2025:570) creates a 500 kilowatt reporting duty from 1 July 2025, that Energimyndigheten published 27 April and 15 May 2026 as notification and reporting dates for year 2025, that the public EU-database view is aggregated, and that Article 12.4 and Article 26.6 are encouragement and proposal language on the cited English page.

It does not prove which Swedish hall filed. It does not prove a named-hall score. It does not prove that Article 26.6 is a final Swedish operating duty on 12 September 2026. It does not convert site power or GPU count into installed IT power demand.

Empty cells stay empty. Until a later primary source publishes a named Swedish filing or a final waste-heat rule, the 500 kilowatt row stays a duty, not a league table.