DEPLOY

Data center campus

Lake Mariner Data Campus

Lake Mariner Data Campus is an AI data center campus developed by TeraWulf Inc. in New York, Barker. 0.75 GW of capacity has been announced; 0.10 GW is energized. The gap is what this page tracks: what is claimed versus what is actually built, each figure dated and sourced.

Partially energized · TeraWulf Inc. · Former industrial site · NYISO · Barker, New York, United States

Track Lake Mariner Data Campus

Capacity: announced vs energized

Announced-to-energized gap: 0.65 GW. Every figure below is a single dated, sourced claim. Current best per series resolves by evidence tier, then date. See the methodology.

51st-largest announced of 97 tracked campuses14th by energized capacity48th percentile announced-to-energized gap≈ 608,000 homes of power at full announced capacity (basis)

Promised online: Q1 2027. Energized capacity is now on record. Claimed by TeraWulf Inc. (source).

Lake Mariner Data Campus capacity claims
Source
Announced0.75 GW2026-03-31verifiedsec filing
Contracted0.44 GW2026-03-31verifiedsec filing
Energized0.10 GW2026-07-01verifiedcompany filing
Energized0.08 GW2026-06-30verifiedcompany filing
Energized0.06 GW2026-03-31verifiedsec filing
Under construction0.34 GW2026-06-30verifiedcompany filing

Key facts

partially energized

Lifecycle

0.75 GW

Announced

0.10 GW

Energized

TeraWulf Inc.

Developer

United States

Location

NYISO

Grid

former industrial site

Land

0.65 GW

Announced-to-energized gap

On the data center map

Every tracked data center is on this map, centered on Lake Mariner Data Campus. Pan or zoom out to see how close rivals are building.

Approximate pin. We hold a city-level coordinate for this campus, not a verified site coordinate, so the marker shows the city rather than the parcel. The satellite strip and building outlines stay off until the site coordinate is sourced.

Free to use on your site, with a link back to DEPLOY.

In clusterNew York(82)

The deal

developer
TeraWulf Inc. · NASDAQ: WULF
operator
TeraWulf Inc. · via La Lupa LLC and Akela SPVs
utility
NYISO
financier
Google · $1.8B+ cumulative debt backstop; warrants; equity stake
offtaker
Fluidstack · ~360 MW incl. 160 MW CB-5; 10-year leases
offtaker
Core42 · 72.5 MW gross / 60 MW critical IT, ~$1.1B/10yr

Power

Power source
grid
Grid operator
NYISO
Interconnection
Water
Closed-loop cooling that does not draw from Lake Ontario despite the lakeside location and legacy coal-plant intake; the campus uses only a few gallons of utility water daily.

The New York (NYISO) grid demand right now: 13.8 GW (EIA-930, 2026-09-27 04:00). Lake Mariner Data Campus's announced 0.75 GW would be 5.4% of the grid's current load.

County water status: No drought in Niagara County, week of 2026-09-22 (US Drought Monitor). Data centers are large water users for cooling; this is the neutral local water picture.

Silicon on site

Every AI chip publicly attributed to Lake Mariner Data Campus on the DEPLOY registry. Quantity hints are unstructured because underlying disclosures vary by an order of magnitude. Source links per row.

  1. as of 2025-01-01

    H200-generation HPC capacity for AI-training tenants

    inferredAI-training-oriented HPC campus; specific chip mix not published, H200 inferred from current-gen positioning.

    TeraWulf

Why here

Lake Mariner Data Campus sits on former industrial site in New York, Barker. It connects to the NYISO grid, draws on grid power. This siting summary is composed from the record's held fields, not speculation; see methodology.

Financial structure

Google credit support backstopping Fluidstack lease
$600M. $600M of Google credit support for Fluidstack's Lake Mariner lease obligations became effective on completion of CB-3 (early July 2026) company filing

Regulatory paper trail

The filings and rules on record for this site and its jurisdiction, most recent first. Each is a sourced, dated artifact you can follow to the primary document.

NHTSA Recall: Zoox Robotaxi Software Update for Heavy Smoke Visibility (26E044)operational restriction · 2026-07-15 · United States
FCC Proposed Fines Against Drone Companies (July 2026)other · 2026-07-10 · United States

Investment, workforce and specs

Capex
WULF Compute build costs tracking within $8-10M per critical IT MW guidance source

Timeline

  2. Aug 2026
    party linked
    offtaker: linked externalName "Core42" to company core42
  3. Sep 2026
    Current: Partially energized

Sources

8447c201-da69-482d-b6f8-338ab1252f0b · Tracked with DEPLOY's verified-vs-claimed methodology. Every term is defined in the glossary. Announced numbers are claims, not built capacity.

Head-to-head

Lake Mariner Data Campus vs Cayuga Data Campus →

Common questions

What is Lake Mariner Data Campus?
Lake Mariner Data Campus is an AI data center campus tracked on the DEPLOY registry, located in Barker. DEPLOY records its capacity as a dated, sourced ledger: announced gigawatts versus actually energized gigawatts, never a press-release total.
How much power will Lake Mariner Data Campus use?
Lake Mariner Data Campus has 0.75 GW of announced capacity on the DEPLOY registry, of which 0.10 GW is recorded as energized, an announced-to-energized gap of 0.65 GW. Each figure is individually dated and sourced.
Who is building Lake Mariner Data Campus?
TeraWulf Inc. is recorded as a party to Lake Mariner Data Campus on the DEPLOY registry.
Is Lake Mariner Data Campus operating yet?
As of the most recent verification on the DEPLOY registry, Lake Mariner Data Campus is partially energized. DEPLOY tracks the lifecycle from announced through energized, so the current state reflects sourced evidence, not the original announcement.
How verified is the data on Lake Mariner Data Campus?
A human editor has reviewed this record for the indexed registry. Every capacity figure is an append-only, dated claim resolved to the highest-evidence tier; superseded claims are kept but excluded from the current view.

Deploy Watch

Track Lake Mariner Data Campus on Deploy.

We notify you when energized capacity, lifecycle state, or a new dated capacity claim changes against primary-source evidence, not when the developer issues a press release.

Cite this page

DEPLOY. (2026). Lake Mariner Data Campus: AI data center campus record. Retrieved September 27, 2026, from https://registry.deploy.report/datacenters/terawulf-lake-mariner-barker-new-york

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The verified data on this page is available under a Creative Commons Attribution 4.0 license: reuse the facts freely, with attribution to DEPLOY (deploy.report). The prose, design, and any imagery are not included and keep their own rights.

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