Open Infrastructure IndexAI Data Center Index

Energy Source

Nuclear

AI data centers powered by Nuclear energy — operators, countries, and build status compared. 18 facilities with 18.9 GW of selected tracked capacity.

Facilities

18

Tracked Capacity

18.9 GW

Operators

35

Countries

4

Operational

3

Capacity Pipeline

18.9 GW of selected tracked capacity across 18 facilities.

Planned520 MW3%2
Announced500 MW3%1

Data Quality

100% cited
89% capacity published
39% geolocated
83% dated

Head-to-Head Comparisons

Pre-built matchups involving Nuclear — facility count, capacity, status mix, and energy breakdown side by side.

NuclearvsRenewableNuclearvsFossilNuclearvsHydroelectric

Market Composition

How this slice breaks down

Status, operator concentration, and energy profile across 18 facilities.

Status distribution

Planned211%
Announced16%

Top countries by capacity

EDF5.7 GWSoftBank Group5 GWSB Energy5 GWSchneider Electric5 GWMeta4.5 GWVistra Corp3.8 GW

Energy mix

Nuclear1372%
Other / Unknown528%

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Machine-readable Data

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Tabular
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GeoJSON
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Frequently asked questions

How many AI data centers use nuclear energy?
18 tracked facilities are tagged with nuclear energy sourcing, representing 18.9 GW of selected tracked capacity.

Operators Present

Amazon Web Services
3 facilities
Meta
3 facilities
NVIDIA
3 facilities
EDF
2 facilities
Google
2 facilities
iliad Group
2 facilities
Mistral AI
2 facilities
Oklo Inc.
2 facilities
Talen Energy
2 facilities
Vistra Corp
2 facilities

Countries Present

United States
11 facilities
France
5 facilities
Romania
1 facilities
United Kingdom
1 facilities

Status Mix

Planned
11 facilities
Announced
3 facilities
Operational
3 facilities
Under Construction
1 facilities

Facilities

Facility Operator Location Capacity ↓ Status Energy Workload Readiness Sources
SoftBank France AI Data Center Capacity Program
SoftBank GroupSB EnergySchneider ElectricEDFFrance
Hauts-de-France and additional France sites
5,000 MWplanned national AI data center capacity program; first 3.1 GW phase targeted by 2031OtherMixed
3
Meta-Vistra PJM Nuclear Power Agreements
MetaVistra CorpUnited States
PJM grid region (Ohio and Pennsylvania)
2,609 MW20-year Meta-Vistra nuclear PPAs announced January 2026; uprate capacity expected in early 2030sNuclearMixed
3
AWS Pennsylvania AI Innovation Campuses and Susquehanna PPA
Amazon Web ServicesTalen EnergyUnited States
Pennsylvania
1,920 MWunder construction at Susquehanna-adjacent campus with additional planned Pennsylvania campusesNuclearMixed
5
Romania Black Sea AI Gigafactory Bid
Romanian Ministry of EconomyEuroHPC JURomanian AI Gigafactory ConsortiumRomania
Cernavoda and Doicesti
1,500 MWplanned bid / letter of intent through EuroHPC AI Gigafactory process; no selected developer or constructionNuclearSovereign AI
3
Campus AI / MGX-Mistral 1.4 GW France AI Campus
MGXBpifranceMistral AINVIDIACampus AIFrance
Seine-et-Marne / Paris region
1,400 MWplanned AI campus; construction expected H2 2026 with operations targeted from 2028OtherSovereign AI
4
Meta-Oklo Southern Ohio Nuclear Power Campus
MetaOklo Inc.United States
Pike County, Ohio
1,200 MWagreement announced January 2026; pre-construction and site characterization slated for 2026NuclearTraining
2
AWS Project Spectrum / Comanche Peak Nuclear Data Center Campus
Amazon Web ServicesVistra CorpUnited States
Hood and Somervell Counties, Texas
1,200 MWplanned data-center campus / contracted power delivery beginning Q4 2027NuclearMixed
5
Crane Clean Energy Center (Three Mile Island Reactivation)
Constellation EnergyMicrosoftUnited States
Londonderry Township / Middletown, Pennsylvania
835 MWplanned 2028 restart pending regulatory approvalsNuclearPower-Linked AI Infrastructure
3
EDF / OpCore Montereau AI Data Center
OpCoreEDFiliad GroupInfraVia Capital PartnersFrance
Montereau-Vallee-de-la-Seine, Ile-de-France
700 MWplanned / exclusive negotiations for former power-plant siteOtherMixed
2
Meta-TerraPower Natrium Power Agreement
MetaTerraPowerUnited States
United States
690 MWcommercial agreement with initial delivery as early as 2032; specific initial dual-unit site not yet identifiedNuclearAI power procurement
3
Duane Arnold Energy Center Google PPA Restart
NextEra EnergyGoogleCentral Iowa Power CooperativeUnited States
Palo / Linn County, Iowa
615 MWDuane Arnold restart targeted for full operation by Q1 2029, pending regulatory approvals.NuclearAI power procurement
3
Google-Kairos Power AI Data Center Initiative
GoogleKairos PowerUnited States
United States
500 MWannouncedNuclearUnknown
2
Rolls-Royce SMR-Powered Data Center Initiative
Rolls-RoyceUK GovernmentUnited Kingdom
Europe
470 MWplannedNuclearGeneral Cloud
2
Scaleway AION France AI Gigafactory Bid
Scalewayiliad GroupAION ConsortiumFrance
France
200 MWplanned / consortium bid under EU AI Gigafactories frameworkNuclearSovereign AI
3
Oklo's Aurora Nuclear Powerhouse for AI Data Centers
Oklo Inc.United States
Western United States
50 MWplannedNuclearUnknown
2
Mistral Compute / Eclairion Bruyeres-le-Chatel AI Cluster
Mistral AIEclairionFluidstackNVIDIAFrance
Bruyeres-le-Chatel, Essonne
40 MWoperational ramp; Mistral Compute serving production while physical capacity scalesOtherTraining
5
AWS Susquehanna-Cumulus Nuclear Data Center Campus
Amazon Web ServicesTalen EnergyUnited States
Salem Township / Berwick, Pennsylvania
—existing Susquehanna-adjacent AWS data-center campus with broader front-of-the-meter transitionOtherAI & Cloud Infrastructure
5
Diablo Canyon Nuclear AI Operations Project
Pacific Gas and Electric Company (PG&E)Atomic CanyonNVIDIAUnited States
Avila Beach, California
—AI document-search deployment at operating nuclear plant; no data-center capacity claimNuclearOperations
2
SoftBank France AI Data Center Capacity Program5,000 MW
SoftBank Group · SB Energy · Schneider Electric · EDF
France · Hauts-de-France and additional France sitesplanned national AI data center capacity program; first 3.1 GW phase targeted by 2031OtherMixed86% Ready3 sources
Meta-Vistra PJM Nuclear Power Agreements2,609 MW
Meta · Vistra Corp
United States · PJM grid region (Ohio and Pennsylvania)20-year Meta-Vistra nuclear PPAs announced January 2026; uprate capacity expected in early 2030sNuclearMixed86% Ready3 sources
AWS Pennsylvania AI Innovation Campuses and Susquehanna PPA1,920 MW
Amazon Web Services · Talen Energy
United States · Pennsylvaniaunder construction at Susquehanna-adjacent campus with additional planned Pennsylvania campusesNuclearMixed86% Ready5 sources
Romania Black Sea AI Gigafactory Bid1,500 MW
Romanian Ministry of Economy · EuroHPC JU · Romanian AI Gigafactory Consortium
Romania · Cernavoda and Doicestiplanned bid / letter of intent through EuroHPC AI Gigafactory process; no selected developer or constructionNuclearSovereign AI86% Ready3 sources
Campus AI / MGX-Mistral 1.4 GW France AI Campus1,400 MW
MGX · Bpifrance · Mistral AI · NVIDIA · Campus AI
France · Seine-et-Marne / Paris regionplanned AI campus; construction expected H2 2026 with operations targeted from 2028OtherSovereign AI86% Ready4 sources
Meta-Oklo Southern Ohio Nuclear Power Campus1,200 MW
Meta · Oklo Inc.
United States · Pike County, Ohioagreement announced January 2026; pre-construction and site characterization slated for 2026NuclearTraining86% Ready2 sources
AWS Project Spectrum / Comanche Peak Nuclear Data Center Campus1,200 MW
Amazon Web Services · Vistra Corp
United States · Hood and Somervell Counties, Texasplanned data-center campus / contracted power delivery beginning Q4 2027NuclearMixed86% Ready5 sources
Crane Clean Energy Center (Three Mile Island Reactivation)835 MW
Constellation Energy · Microsoft
United States · Londonderry Township / Middletown, Pennsylvaniaplanned 2028 restart pending regulatory approvalsNuclearPower-Linked AI Infrastructure100% Ready3 sources
EDF / OpCore Montereau AI Data Center700 MW
OpCore · EDF · iliad Group · InfraVia Capital Partners
France · Montereau-Vallee-de-la-Seine, Ile-de-Franceplanned / exclusive negotiations for former power-plant siteOtherMixed86% Ready2 sources
Meta-TerraPower Natrium Power Agreement690 MW
Meta · TerraPower
United States · United Statescommercial agreement with initial delivery as early as 2032; specific initial dual-unit site not yet identifiedNuclearAI power procurement86% Ready3 sources
Duane Arnold Energy Center Google PPA Restart615 MW
NextEra Energy · Google · Central Iowa Power Cooperative
United States · Palo / Linn County, IowaDuane Arnold restart targeted for full operation by Q1 2029, pending regulatory approvals.NuclearAI power procurement100% Ready3 sources
Google-Kairos Power AI Data Center Initiative500 MW
Google · Kairos Power
United States · United StatesannouncedNuclearUnknown86% Ready2 sources
Rolls-Royce SMR-Powered Data Center Initiative470 MW
Rolls-Royce · UK Government
United Kingdom · EuropeplannedNuclearGeneral Cloud86% Ready2 sources
Scaleway AION France AI Gigafactory Bid200 MW
Scaleway · iliad Group · AION Consortium
France · Franceplanned / consortium bid under EU AI Gigafactories frameworkNuclearSovereign AI86% Ready3 sources
Oklo's Aurora Nuclear Powerhouse for AI Data Centers50 MW
Oklo Inc.
United States · Western United StatesplannedNuclearUnknown86% Ready2 sources
Mistral Compute / Eclairion Bruyeres-le-Chatel AI Cluster40 MW
Mistral AI · Eclairion · Fluidstack · NVIDIA
France · Bruyeres-le-Chatel, Essonneoperational ramp; Mistral Compute serving production while physical capacity scalesOtherTraining86% Ready5 sources
AWS Susquehanna-Cumulus Nuclear Data Center Campus
Amazon Web Services · Talen Energy
United States · Salem Township / Berwick, Pennsylvaniaexisting Susquehanna-adjacent AWS data-center campus with broader front-of-the-meter transitionOtherAI & Cloud Infrastructure86% Ready5 sources
Diablo Canyon Nuclear AI Operations Project
Pacific Gas and Electric Company (PG&E) · Atomic Canyon · NVIDIA
United States · Avila Beach, CaliforniaAI document-search deployment at operating nuclear plant; no data-center capacity claimNuclearOperations86% Ready2 sources