Operational
Colossus 2
SpaceXAI · Memphis, United States
Colossus 2 is a operational data center project in Memphis, United States. This record brings together its location, estimated IT capacity, construction timeline, water-disclosure gaps and original sources.
Epoch AI · Checked 2026-09-15 · Owner confidence: confident
AI data center listed by Epoch AI.
Request water-use information →Estimated operating IT capacity
946 MW
Source observation: 2026-06-15
Site water use
Not yet verified
No site-level value published in this atlas
Local water stress
Not yet assessed
Regional context has not been added
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Project timeline
Source notes reproduced from Epoch AI. Future projections are excluded. Status may have changed since the latest observation.
The site is estimated to have at least ~830 MW of GPU server power, with at least "at least 220,000 additional GB300 processors and over 400 additional megawatts of compute power", corresponding to the "next phase of expansion" found in the following company S-1 filing, page 76.This estimate is backed up by our cooling and turbine based power production calculations. The cooling calculations suggest there is enough infrastructure to support ~850MW of IT Power. Similarly the energy production calculations support ~900MW of available IT Power. This gives us confidence that the proposed expansion was achieved in time. The roof for building 3 is halfway complete.
The first array of dry cooling air-cooled condensers for Building 1 has been completed and is operational. A second array, with larger fans, is about halfway complete (located to the south of the first array). More chillers have also been added. For Building 2, an array of dry cooling air-cooled condensers of the same type as Building 1's first array is beginning construction. We believe this corresponds to the "second cluster of 110,000 GB300 processors and 220 megawatts of compute power" from the company S-1 filing, page 76, with compute power corresponding to GPU server power. This is also consistent with our estimates based on cooling equipment.
Since October, an array of dry cooling air-cooled condensers has been added (the array of large fans to the left of the building), and appears almost complete. Two more similar arrays appear to be under construction. More air-cooled chillers, batteries, and gas turbines have also been installed.
Battery facility looks complete (though more might be added). Turbines look connected up, minimal construction around them. We believe this state corresponds to the first compute cluster brought online at this site of "approximately 110,000 GB200 processors, approximately 210 megawatts of compute power", as detailed in the company S-1 filing, page 76. Based on those numbers, we believe "compute power" corresponds to GPU server power. Earlier tweets from Elon Musk also support this timing, and it's consistent with the estimated cooling capacity based on the satellite image.
Battery facility connected to the building. 121 air-cooled chillers installed, which could support 200 MW. In the Duke faciltiy in nearby Mississippi, several natural gas turbines are in place but not fully connected up.
Land clearing begins next to the existing building.
Location
5420 Tulane Rd, Memphis, TN 38109
View the surrounding area ↗Sources & further reading
- Epoch AI — dataset and methodology ↗
- WSJ profile of the Colossus data centers ↗
- Final GPU count reported by Elon Musk ↗
- MLGW update mentioning power requests for Colossus 2 ↗
- SpaceX-Cursor partnership to use Colossus ↗
- Anthropic to use Colossus 2 from June 2026 ↗
- SpaceX S-1 filing, mentioning exact compute and power for Colossus 2 ↗
Dataset attribution: Epoch AI, CC BY.
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Frequently asked questions about Colossus 2
Where is Colossus 2?
Colossus 2 is listed at 5420 Tulane Rd, Memphis, TN 38109. The project is in Memphis, United States.
How much power does Colossus 2 use?
The latest source-backed estimate in this atlas is 946 MW of operating IT capacity, observed for 2026-06-15. This is an estimate of computing capacity, not metered annual electricity consumption.
How much water does Colossus 2 use?
No verified site-level water withdrawal or consumption figure has been added to this atlas. A missing figure means the value is not verified here, not that the project uses no water.