Operational
Anthropic Lake Mariner
AI XPV Platform · Barker, United States
Anthropic Lake Mariner is a operational data center project in Barker, 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
42 MW
Source observation: 2026-07-23
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
From information to action
Ask about this project’s water use.
Request figures, reporting periods and original documents. Edit the draft to reflect your questions and sign it with your name.
A project-specific public email has not been verified. Copy the request and use an official contact channel from the sources below, or suggest a sourced contact through the contribution form.
Read and edit the request
Opening a draft does not send an email. Review it in your email app before sending.
Project timeline
Source notes reproduced from Epoch AI. Future projections are excluded. Status may have changed since the latest observation.
Building 1 looks complete, consistent with it going operational back in May. Building 2 is mostly complete, with the row of backup generators on the east side of the building still being installed. Building 3 shell is complete, with rooftop coolers midway through installation, and no neighboring generators installed/visible yet.
Building 1 is operational. On February 26, Terawulf stated that CB3 was expected to be energized by mid-May 2026. A drone video commissioned from RAAD shows several cooling units operating on May 8. It's therefore likely that the building was fully operational around this date.
Building 1 appears to have a complete shell and cooling equipment. Building 2 shell is still under construction, but 17 cooling units are already loaded on the roof. The outline of Building 3 is visible at the foundation.
Land clearing begins for Building 1 (AKA CB3).
Location
7725 Lake Rd, Barker, NY 14012
View the surrounding area ↗Sources & further reading
- Epoch AI — dataset and methodology ↗
- Terawulf press release with details and timeline for Buildings 1-5 ↗
- DCD article suggesting that Fluidstack will deploy Google TPUs at Lake Mariner ↗
- Announcement of Anthropic-Fluidstack partnership, including data center(s) in New York ↗
Dataset attribution: Epoch AI, CC BY.
Local context is still being researched
No independently reviewed permit summary or community report has been added here. This does not mean there are no permits, concerns or impacts.
Contribute local knowledge
Help fill in the picture.
Suggest a project, correction or local concern. Include a public source so an editor can review it. Reports are private until reviewed; submitting does not change the map.
Frequently asked questions about Anthropic Lake Mariner
Where is Anthropic Lake Mariner?
Anthropic Lake Mariner is listed at 7725 Lake Rd, Barker, NY 14012. The project is in Barker, United States.
How much power does Anthropic Lake Mariner use?
The latest source-backed estimate in this atlas is 42 MW of operating IT capacity, observed for 2026-07-23. This is an estimate of computing capacity, not metered annual electricity consumption.
How much water does Anthropic Lake Mariner 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.