The facility is at the full ~1 gigawatt, 550,000 GPU capacity that was planned as of mid-2025. The timing is based on the air-cooled condensers needing to be complete to handle this power capacity. On 2026-01-13, the third (presumed to be final) array of condensers was roughly at the stage that the first array of condensers was 3 months prior, in October. Based on that, we estimate it will be completed 3 months later, in April 2026. Other components can be completed in parallel to that, but we estimate about a month more will still be needed to put the finishing touches on the data center. That brings the estimated timing to May 2026.
Power (MW)
1494.0
IT Power (MW)
1149.5
H100-equiv
1,389,591
Cap-Ex ($B)
$44.04
Buildings Operational
1.0
Water (MGD)
—
Notes
Colossus 2 is the follow-up to Colossus 1. Like its predecessor, it is located in Memphis and was converted from an existing building. To start powering the data center, xAI made the unusual choice to install natural gas turbines across the border in Mississippi, possibly to get faster approval for their operation. We use a combination of satellite/aerial images and announcements to estimate the timeline and compute capacity of the data center.
- [WSJ profile of the Colossus data centers](https://www.wsj.com/tech/elon-musk-xai-memphis-tennessee-power-dec4c70d)
- [Final GPU count reported by Elon Musk](https://x.com/elonmusk/status/1947701807389515912)
- [MLGW update mentioning power requests for Colossus 2](https://www.mlgw.com/images/content/files/pdf/new/5-5-25%20xAI%20Update.pdf#page=4)
- [SpaceX-Cursor partnership to use Colossus](https://x.com/SpaceX/status/2046713419978453374)