Data center profile · Upper Cook Inlet (East Foreland Corridor), Kenai Peninsula Borough, Alaska

DeepGreen Cook Inlet Subsea Compute Hub

A proposed 100 MW tidal-powered subsea data center in Cook Inlet, Alaska, that exists only as a federal study-permit application, drawing opposition from fishing groups and conservationists

Permit application pending. DeepGreen Cook Inlet SPV applied to FERC for a preliminary permit in Feb. 2026, and FERC accepted the application for filing in Sept. 2026. A preliminary permit would only give study priority; it would not authorize any construction, and no permit has been issued.
100 MW
estimated generation, per the FERC notice
tidal turbines, mostly to power the subsea data center; a generation figure, not IT capacity
66
subsea compute pods in the filing
paired with 330 to 350 hydrokinetic turbines
1,650 acres
seabed footprint
as described in a borough document
Nov. 2, 2026
FERC deadline for comments and competing applications
5:00 p.m. Eastern
OperatorDeepGreen Cook Inlet SPV LLC (applicant)
CustomerNot disclosed
Planned IT capacity62 MW at full build-out (our estimate from on-site generation)
First building in serviceOur estimate: 2029 or later (no dated power path yet).
Next deadlineNov. 2, 2026: FERC deadline for comments, interventions and competing applications
Power

Power and the grid

None energized or contracted yet

Tidal hydrokinetic turbines (self-generation)Proposed, study permit pending
100 MW
estimated generation in the FERC notice, primarily for the subsea pods; 330 to 350 turbines proposed State agency · Sept. 2026
Proposed

Getting on the grid

Permits

Permits checklist

1 pending · 1 checked, nothing on file

Approvals a campus like this normally needs (including an air permit for backup or on-site generators), and what we found.

Risks

What could slow it down

Timeline

What happened, and what is due

SitePaper trailConstructionPowerPermitsMoneyLegalUpcoming
  1. Jan. 12, 2026
    Paper trail Deepgreen Holdings LLC registered in Delaware
  2. Jan. 16, 2026
    Paper trail Deepgreen Cook Inlet SPV LLC registered in Delaware
  3. Feb. 11, 2026
    Permits DeepGreen Cook Inlet SPV files a preliminary permit application with FERC State agency · Feb. 2026
  4. June 18, 2026
    Permits FERC staff say the filing omitted dimensions of many underwater components and that the City of Kenai and some tribes were not notified (press) News report · June 2026
  5. Aug. 21, 2026
    Money The Alaska Energy Authority's CEO says the authority had never heard of DeepGreen (press) News report · Aug. 2026
  6. Sept. 4, 2026
    Permits FERC accepts the application for filing and opens a comment and intervention period State agency · Sept. 2026
  7. Sept. 15, 2026
    Legal Kenai Peninsula Borough Assembly hears public testimony largely urging opposition; the mayor says the borough has filed to intervene News report · Sept. 2026
  8. Sept. 16, 2026
    Permits Kenai City Council takes no action; the city manager says the city may file to intervene News report · Sept. 2026
  9. Oct. 2026
    Legal Cook Inletkeeper files to intervene against the project (press) News report · Oct. 2026
  10. Nov. 2, 2026
    Permits Deadline for comments, motions to intervene and competing applications at FERC State agency · Sept. 2026
The buildings

Specs

330 to 350
marine hydrokinetic turbines proposed
66 pods
subsea compute hives cooled passively by seawater
3.5 miles
115 kV power and fiber subsea cable to Nikiski
Who is involved

Owners, partners and builders

Applicant
  • DeepGreen Cook Inlet SPV LLC: Delaware entity that filed the FERC application
  • DeepGreen Holdings LLC: parent, formed Jan. 2026 (press)
  • Louis Wolfson: managing member, a Massachusetts real estate developer (press)
Decision-makers and interveners
  • Federal Energy Regulatory Commission: decides on the preliminary permit
  • Kenai Peninsula Borough: intervened with a neutral stance (press)
  • Cook Inletkeeper: opposing
Still unknown

Open questions

Where this comes from

59 records from 12 documents

Drawn from news reports, state agency records, utility regulator dockets and business registries, each kept with its date and source. The bar shows documents by type.

News report 9State agency 2Utility regulator 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 (8)
  • On-site generation: 100 MW
    “The estimated annual generation of the DeepGreen Project would be 100 megawatts, which would primarily be utilized to power the subsea data center.”
  • Site location: Upper Cook Inlet, East Foreland Corridor, Kenai Peninsula Borough, AK; subsea cable landing within the Nikiski Industrial Corridor, between the Agrium Kenai Nitrogen Operations and the Kenai Liquefied Natu
    “a subsea cable landing site within the Nikiski Industrial Corridor, positioned between the Agrium Kenai Nitrogen Operations and the Kenai Liquefied Natural Gas Plant”
  • Project components: 330-350 marine hydrokinetic turbines on a universal docking cradle system; 66 modular subsea-compute hives (data center pods); ~3.5-mile 115 kV hybrid power/fiber-optic armored subsea cable
    “approximately 330-350 marine hydrokinetic turbines utilizing a proprietary universal docking cradle system; (2) 66 modular subsea-compute hives (data center pods) integrated within the turbine array”
  • Power strategy: Direct-coupled tidal generation powering the subsea compute hives with passive subsea cooling; spare electricity could be diverted to the Alaska Railbelt Grid via a dedicated terrestrial substation
    “Spare electricity could be diverted to the grid via an interconnect with the Alaska Railbelt Grid at a dedicated terrestrial substation.”
  • Queue 100 MW verified as mw generation onsite: the FERC notice states estimated generation of 100 MW, primarily to power the subsea data center; it is a generation figure, not an IT-load figure
    “The estimated annual generation of the DeepGreen Project would be 100 megawatts, which would primarily be utilized to power the subsea data center.”
  • Power path is behind-the-meter tidal self-generation defined in the FERC filing (100 MW estimated generation primarily for the pods), NOT a Chugach Electric interconnection or PPA: no utility service agreement exists or
    “an approximately 3.5-mile long, 115 kV hybrid power/fiber-optic armored subsea cable”
  • Opposition group notes the permit application describes infrastructure capable of generating and consuming 100 MW, roughly the average peak demand of the entire Kenai Peninsula - context for the single 100 MW generation
    “The DeepGreen permit application details infrastructure capable of generating and consuming 100 megawatts of electricity- roughly equal to the average peak demand for the entire Kenai Peninsula.”
  • FERC's Northwest Branch (Jun 18, 2026 letter) found DeepGreen had not provided dimensions/composition for many underwater components and had not notified the City of Kenai or all tribes/Native corporations; DeepGreen cor
    “A June 18th letter from FERC's Northwest Branch Division of Hydropower Licensing found DeepGreen failed to provide the dimensions and physical composition of many of the data center's underwater infrastructure components.”
Money and contracts (1)
  • Alaska Energy Authority CEO Curtis Thayer said the authority had never heard of DeepGreen and had received no contact; publicly identified construction financing has not been established
    “Alaska Energy Authority CEO Curtis Thayer said the organization had never heard of DeepGreen nor received any contact from the company.”
Permits and government (16)
  • Project status: announced only (feasibility-study stage; preliminary permit application accepted for filing Sept. 4, 2026; permit not issued; no construction authorized)
    “A preliminary permit does not authorize the permit holder to perform any land-disturbing activities or otherwise enter upon lands or waters owned by others without the owners' express permission.”
  • Federal Register notice (91 FR 56879, FR Doc 2026-18151): application filed Feb : preliminary permit application accepted for filing; comments/interventions solicited
    “DeepGreen Cook Inlet SPV, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments, Motions To Intervene, and Competing Applications”
  • FERC Project No. 15423-000: DeepGreen Cook Inlet SPV, LLC filed a Federal Power : preliminary permit application accepted for filing; comments/interventions due Nov. 2, 2026
    “On February 11, 2026, as supplemented on June 26, 2026, DeepGreen Cook Inlet SPV, LLC filed an application for a preliminary permit”
  • As described in FERC's acceptance notice, the project consists of: (1) approxima: project as filed: 330-350 hydrokinetic turbines, 66 subsea compute hives, 115 kV subsea cable to Nikiski
    “approximately 330-350 marine hydrokinetic turbines utilizing a proprietary universal docking cradle system; (2) 66 modular subsea-compute hives (data center pods)”
  • DeepGreen Cook Inlet SPV, LLC filed Feb 11, 2026 (supplemented Jun 26, 2026) for: Preliminary permit application (FPA sec. 4(f)) accepted for filing; notice soliciting comments, motions to intervene and competing applica
    “On February 11, 2026, as supplemented on June 26, 2026, DeepGreen Cook Inlet SPV, LLC filed an application for a preliminary permit, pursuant to section 4(f) of the Federal Power Act (FPA)”
  • preliminary permit application (FPA section 4(f)): application filed
    “On February 11, 2026, as supplemented on June 26, 2026, DeepGreen Cook Inlet SPV, LLC filed an application for a preliminary permit, pursuant to section 4(f) of the Federal Power Act (FPA)”
  • preliminary permit application: accepted for filing; notice published (91 FR 56879, FR Doc. 2026-18151)
    “DeepGreen Cook Inlet SPV, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments, Motions To Intervene, and Competing Applications”
  • preliminary permit proceeding: comment / intervention / competing-application deadline set
    “Deadline for filing comments, motions to intervene, competing applications (without notices of intent), or notices of intent to file competing applications: by 5:00 p.m. Eastern Time on November 2, 2026.”
  • A preliminary permit, if issued, grants only priority to file a license application during the permit term (study priority, up to four years per coverage); it does not authorize land-disturbing activities or construction
    “A preliminary permit does not authorize the permit holder to perform any land-disturbing activities or otherwise enter upon lands or waters owned by others”
  • FERC accepted the preliminary permit application for filing; Federal Register notice Sep 4, 2026 (Project No. 15423-000), comments due 5 p.m. ET Sep 14, 2026
    “DeepGreen Cook Inlet SPV, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments, Motions To Intervene, and Competing Applications”
  • Organized opposition is intervening in FERC Project No. 15423-000: Cook Inletkeeper is filing a motion to intervene against the project (no thermal plume model; slack-tide flow stops), the Kenai Peninsula Borough interve
    “Inletkeeper is filing a motion to intervene with FERC, stating our opposition to the project and interest in protecting the Tikahtnu watershed and the life it sustains”
  • Organized opposition: ACFCA, Inletkeeper and Center for Biological Diversity intervening or filing to intervene; fishing-industry testimony opposed the project at the Kenai council and KPB Assembly; no testimony in suppo
    “No one testified in support. No representative of DeepGreen or of the federal agencies reviewing the application addressed the council.”
  • City of Kenai City Council:
    “City Manager Terry Eubank said the city may file to intervene before a Nov. 2 federal deadline. The council took no action.”
  • Kenai Peninsula Borough Assembly:
    “Mayor Michicky told the assembly the borough filed an intervention in the FERC Deep Green preliminary permit docket and urged residents to submit technical comments”
  • Kenai Peninsula Borough Assembly:
    “An open public testimony window towards the start of the meeting was dominated by calls for the borough to oppose a 100-megawatt data center proposed for construction in Cook Inlet”
  • FERC issued a deficiency letter on June 18, 2026 identifying missing information about proposed equipment and notifications; DeepGreen supplemented the application on June 26, 2026 before FERC accepted it for filing on S
    “FERC's June 18 deficiency letter identified missing information about proposed equipment, including the subsea platform, turbine array, docking cradle, computing hives and silt-protection systems.”
Site and other (8)
  • County code: 02122
    “proposing to study the feasibility of the DeepGreen Cook Inlet Subsea-Compute & Infrastructure Hub Project (DeepGreen Project or project) to be located in the Upper Cook Inlet, East Foreland Corridor, Kenai Peninsula Borough, Alaska.”
  • Project name: DeepGreen Cook Inlet Subsea-Compute & Infrastructure Hub Project
    “proposing to study the feasibility of the DeepGreen Cook Inlet Subsea-Compute & Infrastructure Hub Project”
  • Developer: DeepGreen Cook Inlet SPV, LLC (applicant); managing member Louis Wolfson, Needham, MA
    “Applicant Contact: Louis Wolfson, Managing Member, DeepGreen Cook Inlet SPV, LLC 100 Crescent Road, Needham, MA 02494”
  • Deadline in FERC docket P-15423-000 for comments, motions to intervene, competing applications and notices of intent: 5:00 p.m. Eastern Time on November 2, 2026
    “Deadline for filing comments, motions to intervene, competing applications (without notices of intent), or notices of intent to file competing applications: by 5:00 p.m. Eastern Time on November 2, 2026.”
  • Commercial fishing and conservation groups warned the array could affect salmon migration, fishing operations and marine habitat (Oct 2026)
    “Alaska commercial fishing and conservation center in Cook Inlet warns that the project could affect salmon migration, fishing operations, and marine habitat.”
  • Alaska commercial fishing and conservation groups warn the project could affect salmon migration, fishing operations, and marine habitat in Cook Inlet; organized opposition (Cook Inletkeeper) is intervening at FERC.
    “Alaska commercial fishing and conservation center in Cook Inlet warns that the project could affect salmon migration, fishing operations, and marine habitat.”
  • DeepGreen filed a response with FERC on Sept. 21, 2026 after the interventions (per Alaska AI Docket timeline)
    “SEP 21 DeepGreen files a response with the commission”
  • Kenai Peninsula Borough filed a motion to intervene taking a neutral stance, stating the project could significantly affect borough citizens and businesses
    “The siting and construction of the proposed Project has potential to significantly affect the citizens and businesses of the Kenai Peninsula Borough”