Finland / Site

Nebius Lappeenranta AI factory

Unknown MWTotal facility power not establishedSee capacity evidence for reported claims.

Pajarila data center · Pajarilan datakeskus

Under ConstructionPlanned

Nebius is developing and operating a multi-building AI cloud campus in Pajarila, with Polarnode supporting development and delivery and Fira constructing the first phase. Main construction began in July 2026; the first building is expected in the first half of 2027. Ultimate reported capacity is up to 310 MW; later phases remain planned and no operational capacity was established.

Last researched 2026-10-07Last verified Not independently verifiedPublished revision 1

No approved site photo yet. Photos and their source dates are published after evidence review.

Site profile

Operator: Nebius
Ownership: Nebius (project owner); City of Lappeenranta (landowner)
Business model / scale: Owner Operated / Hyperscale
Region / metro: South Karelia / Unknown
City / locality: Lappeenranta
Address: Kettukuja, Pajarila, Lappeenranta, Finland
Location: City identifies two plots on Kettukuja south of Highway 6, with future access via Pajarilanväylä; no corroborated numerical property point established.
Precision: unknown
Parent: Not assigned

Capacity evidence

Statements retain their dates, definitions and development scope. Do not add these rows together.

Claim / measurement	Scope and status	As of	Evidence and accounting
≈310 MW Unspecified power	Ultimate multi-building campus; operator wording is up to 310 MW Planned · cumulative	2026-03-31	Reported claim ↗ Excluded from capacity totals. Announcement date. Upper-bound wording is preserved here because the qualifier vocabulary has no less-than-or-equal option. Not established as IT load or operational power.
≈310 MW Unspecified power	Entire campus once completed Planned · cumulative	2026-08-11	Reported claim ↗ Excluded from capacity totals. Contractor publication date; approximately 310 MW total power capacity at completion, overlapping c1.
60 MW Unspecified power	Development covered by January 2026 building permission Planned · unclear	2026-01-27	Reported claim ↗ Excluded from capacity totals. News publication and reported permit-decision date; historical permitted scope, not confirmed current first-phase IT capacity.
>300 MW Unspecified power	Total development after intended additional permit Planned · cumulative	2026-01-27	Reported claim ↗ Excluded from capacity totals. Historical news publication date; proposed expansion total overlaps subsequent 310 MW campus claims and must not be added to 60 MW.

Development timeline

2026-01-27 · actual_reported
Building permission reported
Yle reports city permission for Polarnode’s development; original permit decision was not inspected.
Supporting source ↗
2026-03-31 · announcement
Nebius announced as campus operator
Operator announces Lappeenranta AI factory with first customer capacity expected in 2027.
Supporting source ↗
2026-05-13 · planned
Earthworks start scheduled
City notice published May 12 schedules earthworks for May 13; later contractor confirms spring site preparation.
Supporting source ↗
2026-07 · actual
Main construction began
Fira confirms main construction activities commenced in July 2026.
Supporting source ↗
2027 first half · planned
First building completion
Fira expects first data-center building completion during the first half of 2027; this is not evidence of commissioned capacity.
Supporting source ↗
2027 · planned
First customer capacity
Nebius expects first capacity available to customers in 2027.
Supporting source ↗

Disclosed specifications

Land area

41 hectares across two plots

Campus land, not building floor area; operator separately rounds to approximately 100 acres.

Source ↗

Land tenure

City-owned plots leased to Polarnode for 60 years

Separate from Nebius project ownership; subsequent lease arrangements not established.

Source ↗

Development and delivery partner

Polarnode

Supports preparation, permitting and construction services for this same campus.

Source ↗

First-phase main contractor

Fira

Responsible for first-phase data-center construction.

Source ↗

Cooling

Planned closed-loop liquid cooling

Operator says local water intake for server cooling is avoided; operating performance unverified.

Source ↗

Heat recovery

Designed for potential district-heating integration

Opportunity described by operator; city FAQ says solutions remain under discussion, so no completed connection established.

Source ↗

Energy sourcing

Predominantly low-carbon energy mix intended

Forward-looking operator design statement; no site-specific procurement contract or achieved carbon intensity established.

Source ↗

Design water use

Maximum 70,000 cubic metres per year

City FAQ design disclosure; despite closed-loop cooling, total project water use is not zero.

Source ↗

Electrical demand discussion

Approximately 300 MW new load

Undated city FAQ attributes discussion to LUT professor emeritus; not a confirmed connection agreement or IT load. No dated capacity claim created.

Source ↗

Public business contact

media@nebius.com

Published project media contact; no contact made.

Source ↗

Sources and references

Source attribution does not imply independent verification or permission to reuse images.

Nebius to construct 310 MW AI factory in Finland ↗

Published 2026-03-31 · Retrieved 2026-10-07

Operator announces Lappeenranta campus, up to 310 MW, first customer capacity expected in 2027, South Karelia location and proposed cooling/heat recovery.

Pajarila data center ↗

Published Date unavailable · Retrieved 2026-10-07

City identifies Nebius, Kettukuja south of Highway 6, two plots totaling 41 hectares and phased development with Polarnode.

Frequently Asked Questions — Pajarila data center ↗

Published Date unavailable · Retrieved 2026-10-07

City states land belongs to the city and is leased to Polarnode for 60 years; discusses approximately 300 MW electrical demand, heat-recovery negotiations and water-use design.

Lappeenrannan Pajarilan datakeskuksen maanrakennustyöt alkavat 13.5.2026 ↗

Published 2026-05-12 · Retrieved 2026-10-07

City announces earthworks scheduled for May 13; explicitly identifies Nebius as project owner/client and Polarnode as development, permitting and construction-services partner.

Construction and project development company Fira Selected as Main Contractor for One of Europe’s Largest AI Data Center Projects ↗

Published 2026-08-11 · Retrieved 2026-10-07

First-phase contractor confirms main construction commenced July 2026, first building expected in first half of 2027 and approximately 310 MW ultimate campus capacity.