Data center profile · 7725 Lake Rd, Barker (Town of Somerset), Niagara County, New York

TeraWulf Lake Mariner

TeraWulf's former coal plant on Lake Ontario, converting to AI hosting: 438 MW contracted IT capacity for Fluidstack and Core42, 102 MW paying rent.

Operating, expanding. CB-3 was delivered in early July 2026, putting 102 MW of critical IT capacity on rent, and Core42's 60 MW is live. CB-4 is commissioning and CB-5 is targeted for early 2027; the legacy bitcoin-mining halls still run alongside.
438 MW
contracted AI/HPC IT capacity
company annual report: Fluidstack 378 + Core42 60; kept separate from bitcoin mining
102 MW
AI/HPC load on rent by July 2026
company Q2 2026 report; CB-3 delivered early July
245 MW
legacy bitcoin-mining capacity at end of 2025
separate from the AI load; only 18 MW of AI capacity was live then
750 MW
infrastructure capacity the ground lease reserves
a ceiling, not a build plan; the company cites about 500 MW gross in the near term
OperatorTeraWulf (landowner is a company owned by its CEO)
CustomerFluidstack (378 MW, Google credit support) and Core42, a G42 company (60 MW)
Planned IT capacity438 MW at full build-out (company IT figure)
First building in serviceIn service since 2025 (about 102 MW of IT capacity live)
Next deadlineEnd of 2026: Fluidstack lease schedule calls for 200+ MW of critical IT capacity deployed by year-end 2026; CB-4 rent starts in the second half of 2026
Power

Power and the grid

Energized, size not disclosed · 500 MW contracted

Campus expansion from 250 MW to 500 MW of power drawUnder construction (company)
500 MW
company figure (gross capacity); the lease capex covers this expansion Company · Oct. 2026
Contracted
Other sources, size not disclosed
Not used, not on record, or dropped

Getting on the grid

Who supplies what, what it costs, and what is still not public.

  1. Oct. 10, 2024
    Ground lease reserves up to 750 MW
    TeraWulf signs a new ground lease with exclusive access to up to 750 MW of infrastructure capacity. Company · Oct. 2024
  2. June 2025
    Press reports 500 MW approved
    A financing report says NYISO approved another 250 MW of interconnection capacity, bringing the site total to 500 MW (press; no grid-operator record found). News report · June 2025
  3. July 2026
    CB-3 delivered
    The third building is delivered in early July 2026, taking rent-paying capacity to 102 MW. SEC filing · Aug. 2026
  4. As of Oct. 2026
    No new interconnection filing found
    No new interconnection agreement or queue position was found; the campus uses the old plant's connection. see Permits
Queue positions on record
  1. May 21, 2019
    NYISO queue 849
    250 MW, in queue, at Kintigh 345kV Dataset · Oct. 2026
  2. Jan. 23, 2024
    NYISO queue 1670
    250 MW, in queue, at Kintigh 345kV Substation Dataset · Oct. 2026
  3. March 29, 2025
    NYISO queue 1732
    250 MW, in queue, at Kintigh 345kV sub-station Dataset · Oct. 2026

What is next door

campus0.11 km · 345 kV+ line0.68 km · 345 kV+ substationcampus0.11 km · 345 kV+ line0.68 km · 345 kV+ substation

Distances from mapped lines and plants. OpenStreetMap · Oct. 2026

Permits

Permits checklist

1 contested · 1 granted · 4 checked, nothing on file

Local zoning and building records were not found. What is on record is below; the company says the expansion is fully permitted.

Risks

What could slow it down

Money

Money on record

$6.7B
Fluidstack contracted revenue, initial terms
about $16B with extensions (press and counsel) News report · Aug. 2025
$3.2B
Google backstop of Fluidstack lease obligations
raised from $1.8B in Aug. 2025 (press and counsel); Google is not a tenant News report · Aug. 2025
~14%
Google stake in TeraWulf after warrants
about 8% at the first deal (company) News report · Aug. 2025
20M shares + $12M
paid to the CEO-owned landowner for the new ground lease
approved by the audit committee with a fairness opinion Company · Oct. 2024
$851,000
back taxes the prior plant owner settled with the county
June 2024; old tax-deal agreements ended with the plant in 2020 News report · June 2024
Timeline

What happened, and what is due

SitePaper trailConstructionPowerPermitsMoneyLegalUpcoming
  1. Jan. 24, 2024
    Paper trail Wulf Compute LLC registered in Delaware and New York
  2. June 11, 2024
    Money Prior plant owner settles back taxes with the county and town (reported June 2024) News report · June 2024
  3. Oct. 10, 2024
    Site TeraWulf signs a new ground lease reserving up to 750 MW; the landowner is owned by TeraWulf's CEO Company · Oct. 2024
  4. Dec. 23, 2024
    Power Core42 lease announced: over 70 MW of data-center infrastructure Company · Dec. 2024
  5. Aug. 14, 2025
    Money Two 10-year Fluidstack leases announced for 200+ MW, with a $1.8B Google backstop Company · Aug. 2025
  6. Aug. 18, 2025
    Power Fluidstack exercises the CB-5 option: 160 MW more, 360 MW in total (press and counsel) News report · Aug. 2025
  7. March 2026
    Site CB-4 building topped out (press) News report · Oct. 2026
  8. July 2026
    Power CB-3 delivered; 102 MW of critical IT capacity on rent SEC filing · Aug. 2026
  9. Aug. 4, 2026
    Money Niagara County Legislature unanimously asks the Governor to order a sales-tax audit Local government · Aug. 2026
  10. Oct. 2026
    Power Core42 live footprint reaches 60 MW (press) News report · Oct. 2026
  11. End of 2026
    Power Lease schedule: 200+ MW of Fluidstack critical IT capacity deployed by year-end Company · Aug. 2025
  12. March 2027
    Power CB-5 phased delivery targeted for early 2027 (company) SEC filing · Aug. 2026
Construction activity

Building activity by quarter

Since Feb. 2025: 2 OSHA inspections.

OSHA visits
’25
’26
Dot size: records in the quarter, largest = 1. Two-digit years mark each first quarter.
The buildings

Specs

10 years initial term of each Fluidstack lease, with two 5-year options. Company · Aug. 2025

Other data centers within 40 km (5)
This campus (footprint)
265 ac
Buffalo Data Center II
10 ac
Buffalo Data Center
9 ac
H5 Data Centers
5 ac
H5 Data Centers
4 ac
I-Evolve Technology Services Data Cent
0 ac
Who is involved

Owners, partners and builders

Owners and developers
  • TeraWulf: owner-operator (Nasdaq: WULF)
  • Somerset Operating Company: landowner and ground lessor, owned by TeraWulf's CEO
  • Paul Prager: TeraWulf CEO
Customers
  • Fluidstack: tenant of CB-3, CB-4 and CB-5 through lessor Akela Data (a TeraWulf subsidiary)
  • Core42 (G42): tenant, 60 MW live
Financial backers
  • Google: credit support for Fluidstack's leases and a TeraWulf warrant holder; not a tenant
Local government
  • Niagara County Legislature and County Manager: pressing the tax dispute
Builders on site
  • Sunbelt Solomon Solutions: contractor on site per OSHA inspection 348091737; 1 OSHA inspection
  • O'Connell Electric Co.: contractor on site per OSHA inspection 348917683; 1 OSHA inspection
Still unknown

Open questions

Where this comes from

157 records from 41 documents

Drawn from news reports, securities filings, company statements, business registries, public and commercial datasets, state agency records, local government records and court filings, each kept with its date and source. The bar shows documents by type.

News report 12SEC filing 10Company 7Dataset 7State agency 5Local government 1Court filing 1
Evidence

Every quote behind this page

Grade key: A = the primary record itself (permit, filing, exhibit) · B = a dated official statement · C = news reporting. Map distances are our own measurements on OpenStreetMap and carry no grade. Allegations in lawsuits are marked as such in the quotes.

Power (32)
  • large load interconnection request: load interconnection request in queue (NYISO Project Status #6)
    “"Lake Mariner Data II"; "Lake Mariner Data LLC"; "Kintigh 345kV Substation"”
    Dataset · Oct. 2026 · grade A
  • Interconnection status: Energized - NYISO-approved capacity 500 MW; campus operating and expanding (102 MW revenue-generating critical IT after CB-3 delivery in early July 2026, per SEC Q2 2026 release restaged from tree
    “completed delivery of CB-3 in early July, increasing revenue-generating capacity to 102 MW”
    SEC filing · Aug. 2026 · grade A
  • Stated campus size: 500 MW
    “The campus is undergoing phased expansion to support additional HPC contracted deployments with gross capacity of approximately 500 MW in the near term”
    SEC filing · Dec. 2025 · grade A
  • IT capacity: 438 MW
    “Collectively, La Lupa and Akela represent 438 MW of contracted critical IT HPC capacity at the Lake Mariner Data Campus, with some deliveries having commenced in 2025 and others extending into 2026”
    SEC filing · Dec. 2025 · grade A
  • Interconnection status: NYISO load queue positions at the campus Kintigh 345kV POI: Q849 Somerset Load 250 MW (2019, site predecessor), Q1670 Lake Mariner Data II 250 MW (2024, campus LLC), Q1732 Wulf Compute Data Center
    “Load Projects”
    Dataset · Oct. 2026 · grade B
  • large load interconnection request: load interconnection request in queue (NYISO Project Status #6)
    “"Wulf Compute Data Center II"; "TeraWulf Brookings LLC"; "Kintigh 345kV sub-station"”
    Dataset · Oct. 2026 · grade B
  • large load interconnection request: load interconnection request in queue (NYISO Project Status #14)
    “"Somerset Load"; "Somerset Operating Company, LLC"; "Kintigh 345kV"”
    Dataset · Oct. 2026 · grade B
  • Utility: Grid supply through the retired Somerset plant's substation infrastructure
    Measured on OpenStreetMap map data.
    OpenStreetMap · Oct. 2026
  • Nearest power line of 345 kV or more: 0.11 km
    Measured on OpenStreetMap map data.
    OpenStreetMap · Oct. 2026
  • Nearest substation of 345 kV or more: 0.68 km
    Measured on OpenStreetMap map data.
    OpenStreetMap · Oct. 2026
  • Name: TeraWulf Lake Mariner Campus
    “deliver more than 200 MW of critical IT load (representing ~250 MW of gross capacity) at its Lake Mariner data center campus in Western New York”
    Company · Oct. 2026 · grade B
  • Site history: Former Somerset coal-fired power plant (retired); bitcoin mining on site since 2022; pivoting to AI/HPC hosting
    “owns and operates the Lake Mariner facility situated on the expansive site of a now retired coal plant in Western New York”
    Company · Oct. 2026 · grade B
  • Stated campus size: 500 MW
    “Includes electrical capital expenditures required to expand power draw at the Lake Mariner facility from 250 MW to 500 MW”
    Company · Oct. 2026 · grade B
  • IT capacity: 420 MW
    “Under the agreements, TeraWulf will deliver more than 200 MW of critical IT load (representing ~250 MW of gross capacity)”
    SEC filing · Oct. 2026 · grade B
  • Utility service: not stated
    “Purpose-built for liquid-cooled AI workloads, the facility is engineered to meet the scale, density and resiliency required for next-generation compute”
    Company · Oct. 2026 · grade B
  • On-site generation: not stated
    “leveraging predominantly zero-carbon energy sources, including nuclear and hydroelectric power”
    Company · Oct. 2026 · grade B
  • Power plan: grid - NYISO Zone A via legacy Somerset plant substation (dual 345 kV)
    “Estimated power cost of $0.05/kWh at Lake Mariner for Q2-Q4 2025, based on the NYISO Zone A forward power curve as of August 5, 2025”
    Company · Oct. 2026 · grade B
  • Construction stage: vertical - CB-3/CB-4/CB-5 under construction with phased energization through 2026; CB-4 topped out Mar 2026; Core42 buildings (Wulf Den, CB-1, CB-2 phase 1) live; legacy mining halls operating while
    “approximately 40 MW of critical IT load is expected online in the first half of 2026, with the full 200+ MW deployed by year-end 2026”
    Company · Oct. 2026 · grade B
  • Stage: building on track
    “approximately 40 MW of critical IT load is expected online in the first half of 2026, with the full 200+ MW deployed by year-end 2026”
    Company · Oct. 2026 · grade B
  • Moved from campus facts field 'expansion capacity': 750 MW total campus capacity target (ground-lease exclusivity; investor-deck total capacity) MW, ground-lease exclusivity ceiling, not campus capacity. Target ceiling,
    “exclusive access to infrastructure capacity of up to 750 MW, facilitating the Company's future growth plans and value creation initiatives”
    Company · Oct. 2026 · grade B
  • Construction stage: operating + vertical construction - legacy mining halls operating; CB-3 operational; CB-4 topped out; CB-5 progressing toward phased delivery in 2H26/1Q27; 102 MW of contracted IT energized and earnin
    “CB - 3 Operational (Lake Mariner Data) CB - 4 and CB - 5 Progressing Toward Phased Delivery in 2H26/1Q27”
    Company · Aug. 2026 · grade B
  • IT capacity: 102 MW
    “completed delivery of CB-3 in early July, increasing revenue-generating capacity to 102 MW and satisfying the applicable conditions for $600 million of Google’s credit support”
    SEC filing · Aug. 2026 · grade B
  • Construction status: CB-3 operational (delivered early Jul 2026); CB-4 first data hall in commissioning, phased delivery 2H 2026; CB-5 phased delivery targeted early 2027; 336 MW under construction across CB-4 and CB-5
    “The first CB-4 data hall has entered commissioning, with phased delivery and rent commencement expected during the second half of 2026, while CB-5 remains targeted to begin phased delivery in early 2027”
    SEC filing · Aug. 2026 · grade B
  • CB-3 delivered early July 2026; 102 MW of revenue-generating critical IT online; CB-4 commissioning and CB-5 under construction (336 MW combined)
    “102 MW Energized and Generating Lease Revenue as of July 2026”
    SEC filing · Aug. 2026 · grade B
  • Land control: Land owned by Somerset Operating Company (owned by TeraWulf's CEO); TeraWulf holds the New Ground Lease (Oct 10, 2024) with exclusive access to infrastructure capacity up to 750 MW
    “grants TeraWulf exclusive access to infrastructure capacity of up to 750 MW, facilitating the Company's future growth plans and value creation initiatives”
    Company · Oct. 2024 · grade B
  • Registry status: Operating campus on the retired Somerset coal plant site (7725 Lake Rd, Barker). Agency air record at the site remains the legacy Somerset Operating Co Title V-era facility, Permanently Closed in ECHO; w
    “Lake Mariner is already operational, and our expansion supporting Fluidstack and Google is fully permitted”
    News report · Oct. 2026 · grade C
  • Current target date: same as original per company statements through Oct 2026; no slip announced
    “The second phase of CB2, as well as CB3 (42MW), CB4, and CB5 (168MW), are expected to be energized this year”
    News report · Oct. 2026 · grade C
  • grid interconnection (legacy plant infrastructure): legacy infrastructure in place
    “the site features dual 345 kV electrical lines, allowing TeraWulf to expedite its AI and HPC rollout”
    News report · Oct. 2026 · grade C
  • Epoch tracks 'Anthropic Lake Mariner' as a separate site at 7725 Lake Rd, sourced to DCD speculation on Anthropic's $50B Fluidstack plan. Anthropic's announcement names no site (Texas and New York only), and Anthropic's
    “The New York site is likely a 360MW Fluidstack-TeraWulf project in Lake Mariner”
    News report · Oct. 2026 · grade C
  • Quantabundance, restating the Q2 2026 10-Q (never opened; EDGAR blocked), reports 438 MW of contracted critical IT at Lake Mariner (Fluidstack 378 + Core42 60) with 102 MW earning rent by early Jul 2026. Conflicts with t
    “Per the Q2 2026 10-Q, TeraWulf has 438 MW of critical IT capacity contracted at Lake Mariner, New York (Core42 60 MW, Fluidstack 378 MW with Google credit support)”
    News report · Oct. 2026 · grade C
  • Utility service: 500 MW
    “it has received approval from the New York Independent System Operator (NYISO) for an additional 250 MW of interconnection capacity.”
    News report · June 2025 · grade C
  • large load interconnection request: approved - additional 250 MW of NYISO interconnection capacity approved, bringing total approved capacity to 500 MW; company intends to apply for a further 250 MW (750 MW total)
    “This brings the site's total approved capacity to 500 MW, and the company intends to apply for another 250 MW”
    News report · June 2025 · grade C
Money and contracts (50)
  • state sales tax exemption (disputed): county dispute / audit request County position: the campus claims but does not appear to qualify for the exemption; Legislature and County Manager ask the Governor (letter, Aug 6, 20
    “relative to the Lake Mariner Data Center in the Town of Somerset, which claims, but does not appear to actually qualify for, this exemption”
    Local government · Aug. 2026 · grade A
  • Niagara County escalates the sales-tax dispute: Legislature resolution and County Manager letter ask Gov. Hochul to order a Department of Taxation and Finance audit of the Internet Data Center exemption, which the county
    “We believe significant avoidance of state and county sales tax has occurred”
    Local government · Aug. 2026 · grade A
  • compute services (end customer): capacity not named MW critical IT
    “Collectively, La Lupa and Akela represent 438 MW of contracted critical IT HPC capacity at the Lake Mariner Data Campus”
    SEC filing · Aug. 2026 · grade A
  • phase delivery: delivery not stated MW critical IT
    “all of the Core42 HPC Leases have commenced and one of the Fluidstack HPC Leases has partially commenced and the remaining Fluidstack HPC Leases are expected to commence in the second half of 2026 as well as in early 2027”
    SEC filing · Aug. 2026 · grade A
  • Tenant status: Fluidstack USA I Inc. (378 MW critical IT under long-term leases, Google credit support) and Core42 (60 MW) hold the executed leases; no other tenant named
    “Under the Akela Fluidstack Leases, we will provide 378 MW of critical IT load at the Lake Mariner Data Campus”
    SEC filing · April 2026 · grade A
  • Tenant lease: capacity 378 MW critical IT
    “Under the Akela Fluidstack Leases, we will provide 378 MW of critical IT load at the Lake Mariner Data Campus”
    SEC filing · Feb. 2026 · grade A
  • Tenant lease: execution
    “Collectively, La Lupa and Akela represent 438 MW of contracted critical IT HPC capacity at the Lake Mariner Data Campus, with some deliveries having commenced in 2025 and others extending into 2026”
    SEC filing · Feb. 2026 · grade A
  • Tenant lease: capacity 60 MW critical IT
    “Collectively, La Lupa and Akela represent 438 MW of contracted critical IT HPC capacity at the Lake Mariner Data Campus, with some deliveries having commenced in 2025 and others extending into 2026”
    SEC filing · Feb. 2026 · grade A
  • tenant lease: capacity 60 MW critical IT
    “In December 2024, La Lupa entered into long-term data center lease agreements with Core42 (the “Core42 Leases”), pursuant to which we committed to deliver 60 MW of critical IT load.”
    SEC filing · Feb. 2026 · grade A
  • Contracted tenants: Core42 (via La Lupa) 60 MW critical IT; Fluidstack (via Akela) 378 MW critical IT
    “Under the Akela Fluidstack Leases, we will provide 378 MW of critical IT load at the Lake Mariner Data Campus”
    SEC filing · Dec. 2025 · grade A
  • Tenant status: signed
    “Under the Akela Fluidstack Leases, we will provide 378 MW of critical IT load at the Lake Mariner Data Campus”
    SEC filing · Dec. 2025 · grade A
  • Tenants: Fluidstack (378 MW); Core42 (60 MW)
    “Collectively, La Lupa and Akela represent 438 MW of contracted critical IT HPC capacity at the Lake Mariner Data Campus, with some deliveries having commenced in 2025 and others extending into 2026”
    SEC filing · Dec. 2025 · grade A
  • Lease amendment: execution
    “today announced that Fluidstack, a premier AI cloud platform, has exercised its option to expand at the Company's Lake Mariner data center campus in Western New York.”
    SEC filing · Aug. 2025 · grade A
  • Lease amendment: capacity 160 MW critical IT
    “The expansion adds CB-5, a new purpose-built data center building providing an incremental 160 MW of critical IT load, with operations expected to commence in the second half of 2026.”
    SEC filing · Aug. 2025 · grade A
  • Lease amendment: backstop guarantee 3200000000 USD
    “In connection with the new CB-5 lease, Google will provide an incremental backstop of $1.4 billion in support of project-related debt financing”
    SEC filing · Aug. 2025 · grade A
  • Lease amendment: contract value 6700000000 USD
    “Represents $6.7 Billion in Contracted Revenue, with Potential to Reach $16 Billion with Lease Extensions”
    SEC filing · Aug. 2025 · grade A
  • Lease amendment: delivery 160 MW critical IT
    “The expansion adds CB-5, a new purpose-built data center building providing an incremental 160 MW of critical IT load, with operations expected to commence in the second half of 2026.”
    SEC filing · Aug. 2025 · grade A
  • tenant lease: capacity 108 MW critical IT (option; 135 MW gross)
    “the HPC Leases provide Core 42 an option to expand near-term HPC hosting capacity by an additional 135 MW gross, which is equivalent to 108 MW of critical IT load, by March 31, 2025”
    SEC filing · March 2025 · grade A
  • Tenants: Fluidstack USA I Inc.; Core42 (G42 subsidiary)
    “today announced two 10-year high-performance computing (HPC) colocation agreements with Fluidstack”
    Company · Oct. 2026 · grade B
  • data center lease (Fluidstack, all buildings): termination - FINDING: no termination-for-convenience or notice-period clause is stated in the announcement-level documents opened; the executed lease exhibits were
    “TERAWULF INC. - filings index entry: Form 8-K, accession 0001104659-25-078084, filed 2025-08-14”
    SEC filing · Oct. 2026 · grade B
  • data center lease (Core42): expansion option - NOT exercised Option for additional 135 MW gross (108 MW critical IT). NOT evidenced as exercised in any opened source - option row only, never booked as contracted MW
    “135 MW gross, which is equivalent to 108 MW of critical IT load, underscoring the potential for future scalability and revenue growth”
    Company · Oct. 2026 · grade B
  • Tenant lease: delivery
    “completed delivery of CB-3 in early July, increasing revenue-generating capacity to 102 MW and satisfying the applicable conditions for $600 million of Google's credit support”
    SEC filing · Aug. 2026 · grade B
  • data center lease (CB-3 + CB-4): scope 200+ MW
    “Under the agreements, TeraWulf will deliver more than 200 MW of critical IT load (representing ~250 MW of gross capacity) at its Lake Mariner data center campus”
    SEC filing · Aug. 2025 · grade B
  • data center lease (CB-3 + CB-4): term Two 10-year initial terms (HPC colocation agreements)
    “today announced two 10-year high-performance computing (HPC) colocation agreements with Fluidstack, a premier AI cloud platform”
    Company · Aug. 2025 · grade B
  • data center lease (CB-3 + CB-4): contract value approximately $3.7 billion contracted revenue over the initial 10-year terms
    “The agreements represent approximately $3.7 billion in contracted revenue over the initial 10-year terms”
    Company · Aug. 2025 · grade B
  • data center lease (CB-3 + CB-4): extension options Two 5-year extension options; if exercised, total contract revenue approximately $8.7 billion
    “include two five-year extension options which, if exercised, would bring the total contract revenue to approximately $8.7 billion”
    Company · Aug. 2025 · grade B
  • data center lease (CB-3 + CB-4): delivery schedule ~40 MW online 1H 2026; full 200+ MW deployed by end-2026
    “approximately 40 MW of critical IT load is expected online in the first half of 2026, with the full 200+ MW deployed by year-end 2026”
    Company · Aug. 2025 · grade B
  • data center lease (CB-5 expansion option): exclusivity / expansion option 30-day exclusivity for CB-5, adding potential 160 MW of critical IT capacity MW
    “Fluidstack Granted 30-day Exclusivity for CB-5, Adding Potential 160 MW of Critical IT Load”
    Company · Aug. 2025 · grade B
  • credit support (Google backstop): credit support Google backstops $1.8 billion of Fluidstack's lease obligations to support project-related debt financing
    “Google will backstop $1.8 billion of Fluidstack's lease obligations to support project-related debt financing”
    Company · Aug. 2025 · grade B
  • warrants (Google): warrants Warrants to acquire approximately 41 million TeraWulf shares, approximately 8% pro forma equity ownership
    “will receive warrants to acquire approximately 41 million shares of TeraWulf common stock, equating to an approximately 8% pro forma equity ownership stake”
    Company · Aug. 2025 · grade B
  • data center lease (Fluidstack, all buildings): default / recognition agreements Recognition Agreements: on Fluidstack default or insolvency, Google may pay the termination fee OR cure rent and assume the lease
    “TERAWULF INC. - filings index entry: Form 8-K, accession 0001104659-25-078084, filed 2025-08-14”
    SEC filing · Aug. 2025 · grade B
  • data center lease (Core42): scope over 70 MW turn-key data center infrastructure (72.5 MW gross = 60 MW critical IT per company deck) MW
    “the Company will deliver over 70 megawatts (MW) of turn-key data center infrastructure to host Core42's deployment at the Lake Mariner facility in Upstate New York”
    Company · Dec. 2024 · grade B
  • data center lease (Core42): term / renewals Long-term lease with two five-year renewal options (deal coverage of the release reports a 10-year initial term)
    “five-year renewal options, providing a long-term, stable, high-margin revenue stream for TeraWulf”
    Company · Dec. 2024 · grade B
  • data center lease (Core42): delivery schedule Infrastructure released for production in phases between Q1 and Q3 2025
    “The infrastructure will be released for production in phases between Q1 and Q3 2025”
    Company · Dec. 2024 · grade B
  • ground lease (New Ground Lease): scope New long-term ground lease replaces the original Lake Mariner lease; consideration paid for Somerset's termination of the original lease and entry into the new lease
    “the consideration paid to Somerset's parent company in exchange for Somerset's termination of the original lease and entering into the New Ground Lease”
    Company · Oct. 2024 · grade B
  • ground lease (New Ground Lease): consideration 20 million shares of TeraWulf common stock + $12 million cash, paid to Somerset's parent company
    “is comprised of 20 million shares of TeraWulf's common stock and $12 million in cash”
    Company · Oct. 2024 · grade B
  • ground lease (New Ground Lease): lockup Seller prohibited from selling 15 million shares for 18 months and the remaining 5 million shares for 12 months
    “will be prohibited from selling 15 million shares for 18 months and the remaining 5 million shares for 12 months”
    Company · Oct. 2024 · grade B
  • ground lease (New Ground Lease): capacity exclusivity / rent Exclusive access to infrastructure capacity of up to 750 MW; no escalation in annual lease payments per acre versus the original lease MW
    “grants TeraWulf exclusive access to infrastructure capacity of up to 750 MW, facilitating the Company's future growth plans and value creation initiatives”
    Company · Oct. 2024 · grade B
  • ground lease (New Ground Lease): related-party governance Somerset is owned by TeraWulf's CEO; lease negotiated and approved by the Board's Audit Committee with independent legal counsel and a financial-advisor fairness
    “The Committee consulted independent legal counsel and the Company's financial advisor, as Somerset is owned by the Company's Chief Executive Officer”
    Company · Oct. 2024 · grade B
  • Tenant status: Both tenants under executed long-term leases: Fluidstack 360 MW contracted (CB-3/CB-4/CB-5) with Google credit support; Core42 60 MW critical IT live
    “The deal will deliver more than 360 megawatts of critical IT infrastructure at TeraWulf's Lake Mariner data center”
    News report · Oct. 2026 · grade C
  • data center lease (Core42): delivery - expansion of live footprint Live footprint grew 18 MW to 60 MW by 2026 (Wulf Den 2 MW + CB-1 16 MW + CB-2 phase 1 42 MW live) MW
    “Wulf Den (2MW), CB1 (16MW), and the first phase of CB2 (42MW) - live”
    News report · Oct. 2026 · grade C
  • state sales tax exemption (claimed): exemption claim TeraWulf informed Niagara County officials in February 2026 that it does not plan to pay sales tax on equipment and supplies purchased for the expansion, claiming the
    “TeraWulf Inc., the owner of Lake Mariner, informed county officials in February that it does not plan to pay sales tax on the equipment and supplies purchased for its massive expansion”
    News report · Oct. 2026 · grade C
  • Beowulf Electricity & Data is hiring multiple operations roles at Barker, NY (O&M Technician, shift lead, electrical/HVAC technicians) - live staffing at the Lake Mariner site
    “Beowulf Electricity and Data Location: Barker, NY Position Type: Full-Time, Shift Work (Non-Exempt) Compensation: $42.00 - $45.00 / hour”
    Company · Oct. 2026 · grade C
  • Google's $3.2B backstop plus warrants (~14%) make Google the credit anchor of the Fluidstack leases without being a tenant; under the Recognition Agreements, on Fluidstack default or insolvency Google may pay the termina
    “Google is backing the deal by guaranteeing $3.2 billion of Fluidstack's lease obligations”
    News report · Oct. 2026 · grade C
  • IDA incentive - FINDING: no application - finding FINDING: no NCIDA PILOT and no discretionary incentive exists - TeraWulf did not apply to the NCIDA, and the county confirmed it received no discretionary tax incentive,
    “But that is not the case with Lake Mariner. TeraWulf did not even apply to the NCIDA”
    News report · July 2026 · grade C
  • compute services (end customer): capacity 360 MW (press figure; TeraWulf filings state 378 MW critical IT for Fluidstack)
    “The New York site is likely a 360MW Fluidstack-TeraWulf project in Lake Mariner”
    News report · Nov. 2025 · grade C
  • data center lease (CB-5, third agreement): expansion exercise / scope Option exercised Aug 2025: third 10-year lease, +160 MW; Fluidstack total 360 MW; contracted revenue $6.7 billion over initial terms, ~$16 billion wit
    “three 10-year high-performance computing (HPC) colocation lease agreements with TeraWulf, including one pursuant to the exercise of an expansion option”
    News report · Aug. 2025 · grade C
  • credit support (Google backstop): credit support increase Backstop increased to $3.2 billion on the CB-5 exercise
    “Google is backing the deal by guaranteeing $3.2 billion of Fluidstack's lease obligations”
    News report · Aug. 2025 · grade C
  • warrants (Google): warrants increase Google equity stake rises to ~14% after the CB-5 expansion
    “Google is boosting its backstop to $3.2 billion and raising its equity stake in the company to ~14 percent”
    News report · Aug. 2025 · grade C
  • PILOT (legacy power plant, terminated): history / settlement Prior plant PILOT agreements were terminated when the coal plant closed in 2020; SOC settled back taxes in June 2024 ($851,000 to the county; town special-dist
    “Previous PILOT agreements with the county, the Town of Somerset and Barker Central School District were terminated when the plant closed in 2020”
    News report · June 2024 · grade C
Permits and government (7)
  • SPDES individual permit (legacy plant record): Listed in ECHO at the site; permittee of record is the prior plant operator
    “ECHO CWA pull at site point 43.34894,-78.603357: SOMERSET OPERATING CO, LLC; BARKER; permit NY0104213; SOMERSET OPERATING COMPANY LLC”
    State agency · Oct. 2026 · grade B
  • Industrial stormwater general permit coverage (legacy plant record): Listed in ECHO at the site
    “ECHO CWA pull at site point 43.34894,-78.603357: SOMERSET OPERATING COMPANY LLC; BARKER”
    State agency · Oct. 2026 · grade B
  • ICIS-Air facility record (legacy coal plant): Permanently Closed
    “ECHO air pull at site point 43.34894,-78.603357 returned 1 facility: SOMERSET OPERATING COMPANY LLC; SOMERSET NY; FRS 110000326371”
    State agency · Oct. 2026 · grade B
  • Niagara County Legislature: Resolution and letter to Gov. Hochul requesting that the NYS Department of Taxation and Finance audit the Internet Data Center sales tax exemption claimed by the Lake Mariner Data Center (reso
    “Niagara County has been raising this issue for quite some time relative to the Lake Mariner Data Center in the Town of Somerset”
    Local government · Aug. 2026 · grade B
  • power allocation: no record opened
    “No NYPA allocation record for Lake Mariner was opened in this pass”
    State agency · Oct. 2026 · grade C
  • no EO 62 fact is booked
    “state officials are wrestling with how to make sure data centers pay the full cost of connecting to the electric grid”
    News report · Oct. 2026 · grade C
  • Somerset Town Board: Approval of Somerset Operating Co. property-tax settlement: town accepts 80 percent of the $312,000 outstanding special-district tax balance (part of the multi-jurisdiction back-tax settlement report
    “At the Somerset Town Board's May business meeting, the board approved an agreement to have the company pay the town 80 percent of the $312,000 balance”
    News report · June 2024 · grade C
Site and other (8)
  • County: Niagara County, NY (Town of Somerset)
    “Niagara County has been raising this issue for quite some time relative to the Lake Mariner Data Center in the Town of Somerset”
    Local government · Aug. 2026 · grade A
  • Announced: March 4, 2022
    “TeraWulf Inc., which was formed to own and operate fully integrated environmentally clean bitcoin mining facilities in the United States, today announced the commencement of mining operations at its Lake Mariner facility in upstate New York”
    Company · March 2022 · grade A
  • County code: 36063
    “FCC census block find for latitude 43.3586546 longitude -78.604128 returned County FIPS 36063, name Niagara County”
    Dataset · Oct. 2026 · grade B
  • Aliases: Lake Mariner Data Center Campus; Lake Mariner facility; Somerset facility (legacy)
    “owns and operates the Lake Mariner facility situated on the expansive site of a now retired coal plant in Western New York”
    Company · Oct. 2026 · grade B
  • Developer: TeraWulf Inc. (Nasdaq: WULF)
    “TeraWulf Inc. (Nasdaq: WULF), a leading owner and operator of vertically integrated, predominantly zero-carbon digital infrastructure”
    Company · Oct. 2026 · grade B
  • Original target date: phased 2025-2026: Core42 phases Q1-Q3 2025; Fluidstack initial phase 1H 2026 with full initial deployment by end-2026; CB-5 2H 2026
    “The infrastructure will be released for production in phases between Q1 and Q3 2025”
    Company · Oct. 2026 · grade B
  • Address: 7725 Lake Rd, Barker, NY 14012
    “some of the parcels at 7725 Lake Road”
    News report · Oct. 2026 · grade C
  • CB-4 topped out in March 2026 (DCD); CB-3/CB-4/CB-5 energization expected through 2026, consistent with the original Fluidstack delivery schedule
    “the company topped out the CB-4 building at the site in March 2026”
    News report · Oct. 2026 · grade C