Mistral’s Swedish Buildout: The Grid Agreement and the Delivery Test

Fjord Journal · Published October 24, 2026 · Sources reviewed October 24, 2026

Project profile · Project Spotlight · FJ Intelligence · Delivery checkpoints · NVIDIA company research

Ellevio documents a 246 MW campus connection agreement. That is stronger power evidence than a development ambition, but it does not establish Mistral’s delivered computing capacity.

Ellevio’s 2025 annual report documents a 246 MW grid-connection agreement for EcoDataCenter and Borlänge Energi Elnät at Kvarnsveden, signed in late 2024, with connection work begun in 2025. The agreement gives Mistral AI’s planned Swedish location a more concrete power-infrastructure record than the campus’s larger expansion ambitions. It still does not establish energized computing capacity or a power allocation to Mistral. [A1 · Ellevio AB]

In a report published August 6, Siljan News described a site visit and identified three halls under construction at EcoDataCenter’s former Kvarnsveden paper-mill site in Borlänge. The report placed Mistral in the planned B3 building and said substantial internal installations remained. The report does not confirm that Mistral has accepted an operational AI cluster. [S6 · Siljan News]

An October 12 interview in Dagens Näringsliv with campus manager Björn Ahnell provides later reporting of building work. Its photographs are credited to EcoDataCenter; they are not independently acquired images. No completed Mistral service was established. [A6 · Dagens Näringsliv / Jörgen Städje]

That distinction matters when reading the February announcement of a €1.2 billion long-term investment in Swedish AI infrastructure. EcoDataCenter is to design, build and operate the underlying infrastructure, while Mistral plans to deploy computing capacity. The partners targeted 2027 and named NVIDIA Vera Rubin GPUs. They did not establish paid project expenditure, installed GPU counts or current customer service. [S1 · EcoDataCenter]

The campus is larger than the customer deployment

EcoDC Holding’s April prospectus describes Mistral’s plan as 23 MW, without explicitly defining the number as IT load. Siljan’s later reporting describes each of the first three buildings as designed for 12 MW of IT load—the electricity used by computing equipment. The documents do not reconcile those figures on the same phase and measurement basis. Neither should be silently substituted for the other. [S5 · EcoDC Holding AB (publ); S6 · Siljan News]

The wider campus has another scale. At its September 2025 groundbreaking, EcoDataCenter described access to 250 MW at launch and potential expansion to 600 MW. Those figures cover the campus, not Mistral alone. They cannot establish installed AI computing capacity or how much power a customer is using. Nor has the relationship between the operator’s 250 MW description and Ellevio’s 246 MW agreement been reconciled. [S10 · EcoDataCenter; A1 · Ellevio AB]

Sources: partnership announcement [S1 · EcoDataCenter], prospectus [S5 · EcoDC Holding AB (publ)], independent site reporting [S6 · Siljan News], groundbreaking release [S10 · EcoDataCenter] and utility annual report [A1 · Ellevio AB].

Expansion records require their own reading

Borlänge’s current planning page describes plan 673 as expanded building rights within existing industrial land, with preparation ahead of formal review still underway. The municipality’s January decision was a positive planning notice, not adoption of the expanded detailed plan. The municipality’s consultation-plan description explicitly discusses an expansion application alongside existing permissions. The planning process therefore cannot be used by itself to claim that earlier construction lacked permission. [S3 · Borlänge municipality; S4 · Borlänge municipality; A3 · Borlänge municipality]

A May applicant-commissioned technical report hosted by the municipality describes a separate backup-generation scope. It cites an earlier permission for 760 MW of combustion-plant input and an application for up to 2,700 MW. These are fuel-input ratings for backup generation, not electricity output, grid capacity or IT load. The underlying court judgment was not reviewed for this article, and municipal hosting does not turn the consultant’s account into an independent official finding. [S9 · Bengt Dahlgren Brand & Risk AB (municipal host)]

The municipal consultation plan places the site within the water and wastewater service area and describes an existing district-heating connection. Those connections do not establish the data center’s measured water consumption or heat delivered to customers. A Profu study summary says heat-recovery business models and possible agreements were still being developed; its combined Falun–Borlänge model is not a signed Borlänge heat-offtake contract. [A3 · Borlänge municipality; A4 · Profu]

The industrial-site risks remain part of delivery

The municipal plan describes legacy metals and PAH contamination linked to the former paper mill. EcoDC’s prospectus identifies possible remediation exposure at Borlänge. Its 2025 sustainability report also describes a separate concrete-related chromium incident in construction water and says the water was collected and disposed of as a precaution. The company reports legacy-soil removal, but this review did not establish independent incident closure or an environmental all-clear. Those constraints belong alongside the power and construction milestones—not beneath a generic sustainability claim. [A3 · Borlänge municipality; S5 · EcoDC Holding AB (publ); A14 · EcoDC Holding AB (publ)]

Delivery is the next test

EcoDataCenter’s current campus page targets first-phase completion by mid-2027. Earlier accounts described early or spring 2027. The sources do not establish that these targets cover the same phase, so they do not by themselves prove a delay or confirm customer acceptance. [S10 · EcoDataCenter; S11 · EcoDataCenter; S6 · Siljan News]

Ellevio’s newer half-year report says development of the Kvarnsveden connection is ongoing and targets completion at the end of 2027. That timetable needs to be matched to the power required by each customer phase before drawing a conclusion about Mistral’s service date. The report does not establish that Mistral must wait for the entire connection program. [A11 · Ellevio AB]

Bravida offers a more specific example of a documented commercial role. In July it announced a SEK 650 million electrical and industrial-piping installation award for an additional Borlänge data center, with work expected through the first quarter of 2028. The disclosure does not identify that award as Mistral’s B3 contract, nor does the order value establish earned revenue or profit. [S8 · Bravida]

For investors, construction, building services, installed computing equipment and accepted customer service are separate delivery steps. The available evidence supports a campus under construction and a planned Mistral deployment. It does not yet establish the precise delivered Mistral capacity, customer billing, project-level cash spending or return on investment.

The next useful disclosures would reconcile the 23 MW plan with the building-level design, identify the accepted phase, reconcile its required power with the grid-work timetable, and confirm when Mistral’s equipment is installed and serving workloads. Those are more informative delivery tests than repeating the largest campus number.

Evidence-based analysis. Sources reviewed October 24, 2026. AI-assisted research. Fjord Journal used published documents and reporting; it did not conduct the cited site visit. See the project profile for company disclosures, source scope and open questions.

Source Documents and Scope

1. EcoDataCenter — EcoDataCenter partnership · 2026-02-11

   Mistral partnership, EUR1.2bn long-term Sweden infrastructure commitment; planned 2027 opening; EcoDataCenter designs/builds/operates; planned NVIDIA Vera Rubin. Not cash spent, installed GPUs, or accepted service.

2. Borlänge municipality — Municipal plan 673 current status · Undated; checked October 24, 2026

   Expanded building rights within existing industrial land. Processing ahead of review; planned construction 2027. This is expansion planning, not evidence existing construction ceased or initial campus lacks all permits.

3. Borlänge municipality — Plan assignment decision · 2026-01-29

   Positive planning notice for part of Kvarnsveden3:392, applicant EcoDC Borlänge AB; increased height/development rights contemplated. Not adopted detailed plan, building permit or power acceptance.

4. EcoDC Holding AB (publ) — EcoDC Holding prospectus · 2026-04-01

   Prospectus approved April1. Describes Mistral EUR1.2bn/23MW planned AI infrastructure and 2027 operation. Ownership table: Areim Investment DC97.64%. Issuer has traded bonds; no blanket unavailable-financials exception. Regulator approval is not endorsement of project facts. Scope of23MW not explicitly IT load. Dated property acquisition, environmental and holding-company financing risks also reviewed.

5. Siljan News — Siljan News on-site tour · 2026-08-06

   Reporter toured works, identifies B1-B3 under construction and Mistral planned in B3; first three designed12MW IT each, B4 onward24MW. Major internal installations remain. Spring2027 service expected. Do not equate its past-tense invested claim with paid capex; unresolved23MW versus12MW basis/phase.

6. Bravida — Bravida installation award · 2026-07-08

   SEK650m additional Borlänge data-centre electrical/industrial piping award; starts immediately through Q1 2028; recorded Q3. Not identified as Mistral B3 contract, revenue earned or margin.

7. Bengt Dahlgren Brand & Risk AB (municipal host) — Ammonia consequence assessment · 2026-05-05

   Four buildings under construction at report date. Cites Sep10 2025 Nacka court M372-25 permission for760MW installed supplied combustion power; application2700MW. Both backup thermal input, not electrical/IT power. Report is not court judgment and hosting does not make its assertions independent municipal conclusions.

8. EcoDataCenter — Groundbreaking disclosure · 2025-09-24

   Construction started; first centre early2027 target. Announced access250MW at launch/scalability600MW, not installed IT, commissioning or Mistral allocation.

9. EcoDataCenter — Current campus marketing page · Undated; checked October 24, 2026

   Up to600MW available power marketed, construction2025, first phase mid2027 target. Claims all environmental permits approved; not independently verified for expanded scope. Do not collapse early2027, spring2027, mid2027 into a verified delivery date.

10. Ellevio AB — Ellevio annual report2025 · Undated; checked October 24, 2026

    Connection agreement covers246MW for EcoDataCenter and Borlänge Energi Elnät in Kvarnsveden; signed late2024; connection works began2025. Agreement capacity and construction, not operating IT load, full energization, tariff, Mistral allocation or600MW secured supply. Report year2025; precise publication date not established.

11. Borlänge municipality — Municipal plan673 description · 2026-06-18

    Describes higher building rights and a parallel application to increase backup generation; existing760MW permission within property. Cites actual Sep10 2025 judgmentM372-25. Municipal water/sewer service area and existing district-heating connection described. Municipality identifies EcoDC Borlänge AB as parcel owner and describes legacy contamination. Consultation plan not adopted plan; it references permission sinceOctober2025 versus Sep10 judgment date and does not resolve legal effective dates. No measured water use, cooling-water contract, abstraction acceptance, heat sales or legal current-compliance finding.

12. Profu — Profu heat recovery study case · 2026-02

    Commissioned by Falu Energi & Vatten, Borlänge Energi and EcoDataCenter starting autumn2025. Models heat recovery from both Falun and Borlänge; economic analysis, business models and potential agreements remained in development. Modelled up-to40% combined heat system is not current delivered heat, signed offtake or Borlänge-alone attribution. Published summary not underlying full model.

13. Dagens Näringsliv / Jörgen Städje — October site-manager interview · 2026-10-12

    Named site manager Björn Ahnell says several large buildings rising and first building taking shape; reporter interview is later dated corroboration of construction, initial2027 target retained. All photos credited operator; do not call photos independently acquired. Syndicated Byggnyheter copy is same work, not extra independent source. Speculative chip/cooling/environmental claims not adopted. No acceptance/commissioning.

14. Ellevio AB — Ellevio H1 2026 interim report · 2026-08-27

    Utility reports ongoing Kvarnsveden grid-connection development and a planned end-2027 completion. Actual H1 group statements also read. Connection-development timetable; relationship to each customer phase unresolved. No energized Mistral capacity or site financial allocation.

15. EcoDC Holding AB (publ) — 2025 sustainability report: construction water and legacy remediation · Undated; checked October 24, 2026

    Issuer reports Borlänge concrete-related chromium-in-water incident and precautionary collection/disposal; describes legacy remediation. Self-report, not independent regulatory closure, compliance finding or proof of no environmental impact.