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STN DATA CENTERS

STN data centers.
What public records show.

STN is privately held and publishes no company-wide megawatt figure. Its GPU One cloud runs in three leased CoreSite buildings in Chicago, Los Angeles and Santa Clara. The landlord records are solid, but none of them names STN, and the 1,536 B200 GPUs in Chicago are tied to STN only by CoreSite and STN statements.

See the 3 sites ↓How we grade evidence ↗

SITES CHECKED OCTOBER 5, 2026

3 STN sites.
14 public records.

Each site sits at the highest stage a record supports. Announced megawatts are shown beside the records, never added to them. A missing record does not mean a site is behind. Many counties publish nothing online.

  1. 0Announced
  2. 0Site identified
  3. 3Permitted
  4. 0Power secured
  5. 0Operating

Chicago, Cook County, IL

CoreSite CH2

Permitted

Why this stage: Chicago issued the landlord building permits for the data center, a level 2 tenant build-out in March 2025 and a liquid cooling revision in January 2026. The state lists CoreSite in its data center tax program. No record names STN, and no utility or occupancy record was found.

Owner or developer
CoreSite, an American Tower company, through CoreSite Real Estate CH2, L.L.C.
STN's role
Colocation tenant. STN owns and operates the GPU servers.
Link to STN
“Owned and operated by STN within CoreSite's CH2 data center, the GPU One cluster comprises more than 1,500 NVIDIA B200 GPUs” CoreSite press release
Announced capacity
2.4 MW. “CH2 in Chicago, home to GPU One's 2.4 MW data center infrastructure” CoreSite blog
Stated timing
“Since the STN expansion with CoreSite launched in April 2025, more than 90% of customers in the multi-tenant computer room in which STN resides are liquid-cooled” Source
Public records found for CoreSite CH2, oldest first.
DateRecordWhat it showsSource
April 3, 2019Building permitCity of Chicago Department of Buildings · Permit 100805864Full building permit for the new construction of a four-story data center at 1432 S Clinton St, held by CoreSite Real Estate CH2, LLC. Reported cost $65,000,000.Status: CompleteRecord
September 22, 2023Building permitCity of Chicago Department of Buildings · Permit 101003132Exterior alterations to install four new diesel generators on level 2 and a new chiller and cooling tower on levels 3 and 4. These are backup units.Status: CompleteRecord
December 31, 2024State incentiveIllinois Department of Commerce and Economic Opportunity · Data Center Investment Program 2024 Annual Report, MOU amendmentApproves an amendment to the MOU with CoreSite Real Estate CH2, L.L.C. and affiliates, adding a one-year placed in service extension. Names no tenant.Status: Amendment approved in 2024Record
March 27, 2025Building permitCity of Chicago Department of Buildings · Permit 101063390Initial tenant build-out of level 2 of the data center, with electrical and mechanical infrastructure on levels 1, 3 and 4. Reported cost $20,668,090. Names no tenant.Status: CompleteRecord
April 23, 2025Public recordChicago Department of Public Health · ASTINS1995789Aboveground storage tank installation permit for CoreSite Real Estate CH2, LLC at 1432 S Clinton St.Status: OpenRecord
December 31, 2025State incentiveIllinois Department of Commerce and Economic Opportunity · Data Center Investment Program 2025 Annual ReportLists Coresite, L.P. (2020, Chicago) with a $250,000,000 investment commitment and 20 jobs. Tenant certificates are counted (91) but not named, so STN does not appear.Status: Certified participant as of December 31, 2025Record
January 21, 2026Building permitCity of Chicago Department of Buildings · Permit 101074945Revision to permit 101063390 for modifications to the liquid cooling system on level 2. Names no tenant.Status: CompleteRecord
February 24, 2026SEC filingAmerican Tower Corporation · 10-K for fiscal 2025, Exhibit 21Lists CoreSite Real Estate CH2, L.L.C. and CoreSite One Wilshire, L.L.C. as subsidiaries. It says nothing about STN or site capacity.Status: FiledRecord
Unverified: not found in online records
  • No government record names STN at CH2. The tie rests on CoreSite and STN statements.
  • The 2.4 MW figure comes from a blog on the landlord's site, not a utility or permit record.
  • STN's tenant sales tax certificate is described by CoreSite but not listed by name in the state report.
  • No utility energization or occupancy record for STN's level or room was found online.

Los Angeles, Los Angeles County, CA

CoreSite LA1, One Wilshire

Permitted

Why this stage: South Coast AQMD lists active permits to operate five emergency diesel generators for CoreSite One Wilshire, LLC at 624 S Grand Ave, two of them issued in 2023. City permits in 2025 and 2026 cover new utility power equipment and mechanical work. None names STN.

Owner or developer
GI Partners owns the One Wilshire building. CoreSite leases and operates the LA1 data center space.
STN's role
Colocation tenant
Link to STN
“The collaboration has since grown to include LA1 in Los Angeles and now CH2 in Chicago, reflecting the expansion of GPU One” CoreSite press release
Announced capacity
“Active Locations ... Los Angeles, CA” STN GPU One page
Stated timing
“STN lists Los Angeles, CA as an active GPU One location.” Source
Public records found for CoreSite LA1, One Wilshire, oldest first.
DateRecordWhat it showsSource
March 7, 2023Air permitSouth Coast Air Quality Management District · Facility 170623, permits G71452 and G71453CoreSite One Wilshire, LLC at 624 S Grand Ave holds five active permits for emergency diesel generators over 500 HP, issued 2012, 2013 and 2023. These are backup units.Stated capacity: “I C E (>500 HP) EM ELEC GEN DIESEL”Status: Active permits to operateRecord
September 4, 2025Building permitLos Angeles Department of Building and Safety · Permit 24016-10000-21911Construct a room of about 3,440 square feet on the ground level to accommodate LADWP power service equipment within an existing equipment yard. Names no tenant.Status: IssuedRecord
September 30, 2026Building permitLos Angeles Department of Building and Safety · Permit 25016-10000-36472Install platforms on levels 20 through 30 inside the north mechanical shaft. Valuation $7,500,000. Names no tenant or use.Status: IssuedRecord
Unverified: not found in online records
  • No record states STN's GPU count, rack count or megawatts in Los Angeles.
  • The LA1 tie comes only from a CoreSite press release. STN's own page says Los Angeles without naming the building.
  • The 2025 and 2026 building permits do not say whether they serve CoreSite's data center floors.

Santa Clara, Santa Clara County, CA

CoreSite SV7

Permitted

Why this stage: Santa Clara issued a 2024 permit to add a generator at 3020 Coronado Drive, and the Bay Area air district approved CoreSite generator applications for the campus in 2025. None names STN.

Owner or developer
CoreSite, through CoreSite Real Estate 3032 Coronado, L.P.
STN's role
Colocation tenant
Link to STN
“STN, Inc. first began working with CoreSite in 2019, starting with a single rack at CoreSite's SV7 facility in Santa Clara.” CoreSite press release
Announced capacity
“Active Locations ... Silicon Valley” STN GPU One page
Stated timing
“STN lists Silicon Valley as an active GPU One location. It does not name the building.” Source
Public records found for CoreSite SV7, oldest first.
DateRecordWhat it showsSource
August 27, 2020Air permitBay Area Air Quality Management District · CEQA comment letter, CoreSite SV9 MNDStates that CoreSite's SV3 through SV8 data centers, which include SV7, consist of a total of 32 permitted diesel backup generators.Status: Comment letterRecord
September 20, 2024Building permitCity of Santa Clara Building Division · BLD24-03186At 3020 Coronado Dr, expand an equipment room and install an additional generator with fuel lines and exhaust. Names no tenant.Status: Issued, with revisions and deferred submittals issued through August 2026Record
September 12, 2025Air permitBay Area Air Quality Management District · Facility 19539, emergency standby diesel engine applicationsCoreSite Real Estate, Coronado Dr and Stender Way, Santa Clara. Applications for emergency standby diesel engines approved in 2025. These are campus-level backup units.Status: Approved. A further application dated August 18, 2026 is under evaluation.Record
Unverified: not found in online records
  • No record shows GPU One capacity at SV7. CoreSite's statement describes a single rack starting in 2019.
  • BAAQMD facility 19539 covers the campus, so its generator approvals cannot be assigned to SV7 alone.

NOT YET CHECKED

Other STN sites.

These sites are named by the company or its partners. We have not yet checked their public records.

  • Project LandmanWest Texas, county not disclosed

    STN's page describes a 1.6 GW campus with a 400 MW initial deployment. It names no county, site, landowner or power source, so no record could be searched.

  • GPU One planned sitesMissouri and South Carolina

    Listed by STN as under development. No city, building or partner is named.

  • Denver colocationDenver, CO

    STN's CEO wrote that STN expanded into Denver colocation. STN does not list Denver as a GPU One location.

BEFORE YOU SIGN

Ask which site
backs your quote.

Company totals do not tell you whether your allocation is live. These questions tie a proposal to a site you can check.

  1. Which site will host my allocation: CoreSite CH2 in Chicago, LA1 in Los Angeles, or SV7 in Santa Clara?
  2. CoreSite describes the Chicago cluster as 1,536 B200 GPUs supporting Skild AI. How much of it is free for a new customer, and when?
  3. How much power does STN hold under contract at each site? Only Chicago has a public figure, 2.4 MW, from a CoreSite blog.
  4. Which of the planned Missouri, South Carolina and Texas sites, including Project Landman, has a signed site or any government approval?

WORK THROUGH IT WITH AN ADVISOR

Check a STN proposal against the record.

Bring your workload, launch date and what could change. We can help you evaluate capacity, compare proposals and identify the deployment support you need.

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Notes on these records

  • STN is private and does not file with the SEC. CoreSite's parent, American Tower, files, but its filings do not mention STN.
  • STN's 2026 strategy post says it operates four sites, all in colocation space from other providers.
  • STN's Skild AI page cites a CoreSite data center of 10MW+. That describes the building, not STN's share.

Records were read online on October 5, 2026. Corrections are welcome through the form below. All providers ↗

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