DC
/

Core42 Lake Mariner

OperatingAI campusCampusBarker, Niagara County, New York
70% profile completeness
41 claims from 11 sources
Current facility power
58 MW[1]
Likelyestimated
Planned capacity
Not yet sourced
Floor area
Not yet sourced
Buildings (planned)
2[1]
Likelyderived
Capital cost / investment
$2.2B[1]
Likelyestimated
First operational
Oct 1, 2025[1]
Likelyderived

POWER & GRID

Time-to-power · verification · interconnection
Time to power
Energized — operating
High confidence
Project verification
Verified operating
Operation documented by satellite imagery.
Current stage
Operational
Furthest stage with documented evidence
Utility · ISO
Niagara Mohawk Power Corp. · NYISO
Substation: Kintigh 345kV Substation

Power reality

Announced
No record
Interconnection request
250 MW[2]
1 active load interconnection request(s): NYISO 1670
Contracted / approved
No record
Under construction
No record
Operational
58 MW[1]
Estimated from buildings observed operational
AI evidence brief
Summarizes only the evidence on this page. Answers citing anything else are rejected automatically.

Project verification

Development
  1. Announcedimplied by a later stage
  2. Land acquiredimplied by a later stage
  3. Planning / zoningimplied by a later stage
  4. Permittingimplied by a later stage
Grid interconnection
  1. Interconnection applicationJan 23, 2024
    ISO/RTO queue
    • Jan 23, 2024 · NYISO load request 1670 (250 MW): Status 6 (SRIS/SIS approved); studies available: SIS; proposed initial backfeed: 02-2027[2]
    • Sep 27, 2026 · Load interconnection request: 250 MW[2]
  2. Feasibility study
    ISO/RTO queue
    • NYISO load request 1670 (250 MW): Status 6 (SRIS/SIS approved); studies available: SIS; proposed initial backfeed: 02-2027 (queue status as of 2026-09-27)[2]
  3. System impact study
    ISO/RTO queue
    • NYISO load request 1670 (250 MW): Status 6 (SRIS/SIS approved); studies available: SIS; proposed initial backfeed: 02-2027 (queue status as of 2026-09-27)[2]
  4. Facilities study
  5. Interconnection agreement / service contract
Build & energization
  1. Financing
  2. Under constructionOct 1, 2024
    Model estimate · Satellite imagery
    • Oct 1, 2024 · Reported status: under construction[1]
    • Oct 1, 2024 · Construction start[1]
    • Oct 1, 2024 · Land clearing begins for Building 1, also known as CB-1, the first large AI/HPC building on the site.[1]
    • Oct 1, 2025 · Reported status: expanding[1]
  3. EnergizationOct 1, 2025
    Satellite imagery
    • Oct 1, 2025 · Building 1 is operational. Based on Terawulf [saying](https://investors.terawulf.com/news-events/press-releases/detail/126/terawulf-reports-third-quarter-2025-results) "As of Septe[1]
    • Mar 31, 2026 · Building 2 is operational. On February 26, Terawulf [stated](https://investors.terawulf.com/news-events/press-releases/detail/132/terawulf-reports-fourth-quarter-and-full-year-2025[1]
  4. OperationalOct 1, 2025
    Satellite imagery
    • Oct 1, 2025 · Building 1 is operational. Based on Terawulf [saying](https://investors.terawulf.com/news-events/press-releases/detail/126/terawulf-reports-third-quarter-2025-results) "As of Septe[1]
    • Mar 31, 2026 · Building 2 is operational. On February 26, Terawulf [stated](https://investors.terawulf.com/news-events/press-releases/detail/132/terawulf-reports-fourth-quarter-and-full-year-2025[1]

● documented · ◌ implied by a later stage · ○ no evidence found. Dates are those of the earliest dated evidence, which can be later than when a stage actually began. Evidence classes: ISO/RTO queue, Model estimate, Satellite imagery.

Grid path

  1. facility
    Core42 Lake Mariner
  2. substation
    Kintigh 345kV Substation[2]
    Queue POILikely
    Point of interconnection in NYISO load request 1670
  3. transmission
    345 kV[2]
    Queue POILikely
    Voltage at the requested point of interconnection (Kintigh 345kV Substation)
  4. utility
    Niagara Mohawk Power Corp.[3]
    Service territoryLikely
    Retail service territory containing the site · Transmission owner (queue): NYSEG
  5. ISO / RTO
    NYISO[5]
    Service territoryLikely
    Balancing authority: NYIS
Substation capacity:
not published
Required upgrades:
not yet sourced
Congestion:
not yet sourced (no nodal price data)

Dashed boxes are based on proximity only and do not establish which asset serves the site.

Interconnection records

QueueRelationshipStageMW req.MW appr.QueuedExpected in servicePOI / TOSource · as of
NYISO 1670
Lake Mariner Data II · Lake Mariner Data LLC
This site's load request
Likely
Request name/customer shares “mariner” with this facility, in the same county.
System impact study
Status 6 (SRIS/SIS approved); studies available: SIS; proposed initial backfeed: 02-2027
250—Jan 23, 2024Feb 2027Kintigh 345kV Substation
TO: NYSEG
[2] Sep 27, 2026

On-site & dedicated generation

No on-site, behind-the-meter or dedicated generation found in sources.

Location & imagery

Mapped outline
Coordinates
43.35707, -78.60405
Address
7725 Lake Rd, Barker, NY 14012[1]Likely
County
Niagara County
Photographs

No openly licensed ground-level photos matched to this site yet.

Ownership, operation & customers

  1. 1. Property owner of record
    Not identified
  2. 2. Owner / developer
    Core42[1]
    Lake Mariner Data LLC(unreviewed)[2]Likely
  3. 3. Operator
    Not identified
  4. 4. Tenant / cloud
    Not identified
  5. 5. End customer / workload
    G42[1]Likely
Power supply
Utility:
Niagara Mohawk Power Corp.(unreviewed)[3]Unverified
Capital & construction
Investor:
Google[1]

Each link is sourced separately. The property owner of record is often a special-purpose entity; the same company appearing in two roles is shown only when sources say so.

All parties with evidence
Owner
Core42[1]Confirmed
Developer
Lake Mariner Data LLC(unreviewed)[2]Likely

Interconnection customer on the load request.

End user
G42[1]Likely
Utility
Niagara Mohawk Power Corp.(unreviewed)[3]Unverified

Most likely retail provider among 2 overlapping service territories (largest retail sales; territory polygons are approximate). Also overlapping: New York State Elec & Gas Corp.

Investor
Google[1]Confirmed

Power (all fields)

Current facility power
58 MW[1]Likelyestimated

Estimated total facility power (IT plus cooling and overhead) at the latest observed milestone.

Current IT capacity
58 MW[1]Likelyestimated

Estimated IT load currently online, based on buildings observed operational.

Estimated annual consumption
356 GWh/yr[4]Speculativeestimated

58 MW × 8,760 h × 70% utilization.

Planned capacity
Not yet sourced

Capacity figures are nameplate or contracted; annual consumption is a labeled model estimate, not metered data.

Grid & electricity

ISO / RTO
NYISO[5]Likelyderived

Location falls inside this ISO/RTO footprint.

Balancing authority
NYIS[3]Likelyderived

Control area of the containing utility territory.

Interconnection status
NYISO load request 1670: 250 MW, in study at Kintigh 345kV Substation[2]Confirmed
Load interconnection request
250 MW[2]Confirmed

NYISO load interconnection request 1670 (Data center (AI)).

State avg. industrial price
10.81¢/kWh[6]Confirmed

New York statewide average, July 2026.

State avg. commercial price
24.18¢/kWh[6]Confirmed

New York statewide average, July 2026.

Generation within 50 km
3.16 GW[7]Confirmedderived

47 EIA-reported plants within 50 km.

Generation queued in county
225 MW[2]Confirmedderived

2 active generation interconnection requests in Niagara County: Solar 225 MW. Queued projects often don't get built.

Contracted / committed power
Not yet sourced
Nearby infrastructureTypeDistanceVoltage / capacitySource
Slayton Settlement Road Solar Csg · RPNY Solar 3, LLCPower plant (Solar)17.4 km7 MW[7]
Lockport Energy Associates LP · Lockport Energy Associates LPPower plant (Natural Gas)24.5 km219 MW[7]
Modern Innovative Energy LLC · Innovative Energy Systems IncPower plant (Biomass)34.8 km6 MW[7]
Model City Energy Facility · Model City Energy LLCPower plant (Biomass)34.8 km6 MW[7]
World Generation X · North American Energy ServicesPower plant (Natural Gas)39.9 km52 MW[7]
Lewiston Niagara · New York Power AuthorityPower plant (Pumped Storage)41.4 km240 MW[7]
Robert Moses Niagara · New York Power AuthorityPower plant (Hydroelectric)42.6 km2.44 GW[7]
Reworld Niagara I · Reworld Niagara I, LLCPower plant (Biomass)44.5 km36 MW[7]
Largest queued generation in this countyFuelQueue statusMWSource
Somerset SolarNYISO 1079 · Somerset Solar, LLCSolarIA signed · proposed 2028-06125 MW[2]
Bear Ridge SolarNYISO 0704 · Bear Ridge Solar, LLCSolarIA signed · proposed 2028-04100 MW[2]

Utility, ISO and nearby assets are derived from the site's location. Proximity to a substation or line doesn't establish the interconnection; that needs a utility filing or interconnection-queue record. Queue requests are applications, not commitments — most never reach operation.

Construction & permitting

  1. Announced
    —
  2. Land acquired
    —
  3. Permitting
    Jan 23, 2024[2]
  4. Construction start
    Oct 1, 2024[1]
  5. First operational
    Oct 1, 2025[1]
  6. Expected completion
    —
Buildings (planned)
2[1]Likelyderived

Count of building outlines traced on satellite imagery.

Buildings operational
2[1]Likelyestimated
PhaseStatusAdded MWCompleted / expectedSource
Building 1operational19 MWOct 1, 2025[1]
Building 2operational39 MWMar 31, 2026[1]

Real estate

Official assessments
Assessor's value for a tax year

None sourced yet

Recorded transactions
Sale prices from recorded deeds

None sourced yet

Model estimates
Our model — not an appraisal

None sourced yet

Capital cost / investment
$2.2B[1]Likelyestimated

Modeled total capital cost (2025 USD) of capacity currently operational, incl. compute hardware.

Annual property tax
Not yet sourced

No county parcel or assessor records linked yet. County records are currently ingested for Loudoun County, VA and Maricopa County, AZ.

Size

Floor area
Not yet sourced

Compute

Chip types
B200[1]Confirmed
Compute (H100-equivalents)
71,800[1]Likelyestimated

What changed (last 3 years)

Follow this facility (RSS)
  • Current IT capacity
    16 MWOct 1, 2025[1]→58 MWMar 31, 2026[1]
  • Current facility power
    19 MWOct 1, 2025[1]→58 MWMar 31, 2026[1]
  • Buildings operational
    0Oct 1, 2024[1]→1Oct 1, 2025[1]→2Mar 31, 2026[1]
  • Status
    Under constructionOct 1, 2024[1]→Operating + expandingOct 1, 2025[1]→OperatingJul 23, 2026[1]

Timeline

Construction start: Oct 1, 2024[1]
First operational: Oct 1, 2025[1]
  1. Oct 1, 2024[1]

    Land clearing begins for Building 1, also known as CB-1, the first large AI/HPC building on the site.

  2. Oct 1, 202519 MW facility power· 1 buildings operational[1]

    Building 1 is operational. Based on Terawulf saying "As of September 30, 2025, the site has energized 245 MW of Bitcoin-mining capacity and 22.5 MW of HPC capacity." The small "Wulf Den" building was said to be 2 MW of IT power while CB-1 would be 16 MW. This is roughly consistent with 22.5 MW of total facility power. This building is leased to Core42, a subsidiary of UAE-based G42. It likely uses NVIDIA DGX B200 servers.

  3. Mar 2, 202619 MW facility power· 1 buildings operational[1]

    Buildings 1 and 2 both appear to have complete building and cooling equipment, based on satellite imagery. Not considering Building 2 operational yet, due to Terawulf's statement that CB2B is expected in March 2026, and is likely still in commissioning phase.

  4. Mar 31, 202658 MW facility power· 2 buildings operational[1]

    Building 2 is operational. On February 26, Terawulf stated that CB2A is operational, presumably making up half the final capacity. CB2B was expected in March 2026. However, it's notable that a drone video commissioned from RAAD showed no cooling fan movement on May 8th, suggesting it was not in use. This building is leased to Core42, a subsidiary of UAE-based G42. It likely uses NVIDIA DGX B200 servers.

  5. Jul 23, 202658 MW facility power· 2 buildings operational[1]

    Both buildings still operational according to satellite imagery.

  6. Jan 23, 2024[2]

    NYISO load interconnection request 1670 filed (250 MW).

  7. Feb 2027Projected[2]

    Proposed initial backfeed / in-service for NYISO load request 1670.

All claims (provenance audit)

41
FieldValueSourceConfidenceAs ofStatus
NameCore42 Lake Mariner[1] Likely2026-07-23Shown
StatusUnder construction[1] derivedLikely2024-10-01Superseded / alternative
StatusOperating + expanding[1] derivedLikely2025-10-01Superseded / alternative
StatusOperating + expanding[1] derivedLikely2026-03-02Superseded / alternative
StatusOperating + expanding[1] derivedLikely2026-03-31Superseded / alternative
StatusOperating[1] derivedLikely2026-07-23Shown
Facility typeAI campus[1] derivedLikely2026-07-23Shown
Address7725 Lake Rd, Barker, NY 14012[1] Likely2026-07-23Shown
OwnerCore42Owner: Core42[1] Confirmed2026-07-23Shown
DeveloperLake Mariner Data LLC[2] Likely2026-09-27Shown
End usersG42Users: G42[1] Likely2026-07-23Shown
UtilityNiagara Mohawk Power Corp.territory 13573: NIAGARA MOHAWK POWER CORP. (INVESTOR OWNED, NATIONAL GRID GROUP[3] derivedUnverified2022Shown
InvestorsGoogleInvestors: Google[1] Confirmed2026-07-23Shown
Current facility power58 MW[1] estimatedLikely2026-07-23Shown
Current facility power19 MW[1] estimatedLikely2025-10-01Superseded / alternative
Current facility power19 MW[1] estimatedLikely2026-03-02Superseded / alternative
Current facility power58 MW[1] estimatedLikely2026-03-31Superseded / alternative
Current IT capacity58 MW[1] estimatedLikely2026-07-23Shown
Current IT capacity16 MW[1] estimatedLikely2025-10-01Superseded / alternative
Current IT capacity16 MW[1] estimatedLikely2026-03-02Superseded / alternative
Current IT capacity58 MW[1] estimatedLikely2026-03-31Superseded / alternative
Estimated annual consumption356 GWh/yr[4] estimatedSpeculative2026-09-29Shown
ISO / RTONYISONEW YORK INDEPENDENT SYSTEM OPERATOR[5] derivedLikely—Shown
Balancing authorityNYIS[3] derivedLikely—Shown
Interconnection statusNYISO load request 1670: 250 MW, in study at Kintigh 345kV SubstationStatus 6 (SRIS/SIS approved); studies available: SIS; proposed initial backfeed:[2] Confirmed2026-09-27Shown
Load interconnection request250 MW[2] Confirmed2026-09-27Shown
Generation queued in county225 MW[2] derivedConfirmed2026-09-27Shown
State avg. industrial price10.81¢/kWh[6] Confirmed2026-07Shown
State avg. commercial price24.18¢/kWh[6] Confirmed2026-07Shown
Generation within 50 km3.16 GW[7] derivedConfirmed202502Shown
Buildings (planned)2[1] derivedLikely2026-07-23Shown
Buildings operational2[1] estimatedLikely2026-07-23Shown
Buildings operational0[1] estimatedLikely2024-10-01Superseded / alternative
Buildings operational1[1] estimatedLikely2025-10-01Superseded / alternative
Buildings operational1[1] estimatedLikely2026-03-02Superseded / alternative
Buildings operational2[1] estimatedLikely2026-03-31Superseded / alternative
Capital cost / investment$2.2B[1] estimatedLikely2026-07-23Shown
Compute (H100-equivalents)71,800[1] estimatedLikely2026-07-23Shown
Chip typesB200[1] Confirmed2026-07-23Shown
Construction startOct 1, 2024[1] derivedLikely2026-07-23Shown
First operationalOct 1, 2025[1] derivedLikely2026-07-23Shown