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xAI Colossus 1

Southwest Memphis, Shelby County, Tennessee, United StatesExpanding
Capacity
No public figure
Lead participant
Memphis Light Gas and Water
Retail Electric And Water Utility
Last updated
Apr 14, 2026
Most recent public record update

About xAI Colossus 1

xAI converted a former Electrolux factory into Colossus in 2024, bringing 100,000 NVIDIA Hopper GPUs online in 122 days and later doubling the interconnected cluster to 200,000 GPUs. Its rapid power and cooling buildout has become a major permitting and environmental-justice test.

Capacity

Operating capacityAn operating IT-capacity figure has not been publicly disclosed.
Initial Tva Firm Power150 MWApproved · xAI Colossus 1
Additional Tva Firm Power150 MWApproved 2026 · xAI Colossus 1
Generation15 gas turbinesAir Permit · xAI Colossus 1

Development

3 phases · 0 milestones
Initial 100,000-GPU clusterOperational
Expansion to 200,000 GPUsOperational
Further Memphis-area roadmapPlanned

Infrastructure

Interim Municipal WaterUtility Service Capacity

1,300,000 gallons/day

Permitted TurbinesAir Permit

15 gas turbines

Project map

0 of 1 project point mapped
Infrastructure facts
2
Mapped records
1
Capacity figures
2

No map point available

Cooling & water: 1Site systems: 1

Facts & sources

Published claims and their source links.

10 facts
Initial Gpu Count
100,000 NVIDIA Hopper GPUs
Actual Company Reported
Expanded Gpu Count
200,000 NVIDIA H100 GPUs
Actual Company Reported
Initial Build Duration
122 days
Actual Company Reported
Doubling Duration
92 days
Actual Company Reported
Roadmap Gpu Count
1,000,000 GPUs
Roadmap
Initial Tva Firm Power
150 MW
Approved
Additional Tva Firm Power
150 MW
Approved 2026
Interim Municipal Water
1,300,000 gallons/day
Utility Service Capacity
Permitted Turbines
15 gas turbines
Air Permit
Air Permit Litigation Status
Challenged status
Actual