STACK INFRASTRUCTURE

STACK Infrastructure is a privately held platform sponsored by IPI Partners that focuses on large scale wholesale capacity and campus development for hyperscale and enterprise customers.

The company was launched in 2019 when IPI combined the remaining Infomart Data Centers assets with selected T5 Data Centers facilities, and industry coverage at launch cited eight data centers across six U.S. markets totaling about 100 MW. In March 2022, IPI unified DigiPlex in the Nordics and SUPERNAP Italia in Milan under the STACK brand to form STACK EMEA, expanding the platform across Europe. STACK has since added international sites, including the first phase of a 56 MW campus in Toronto and its first Australian data center in Melbourne. Core services referenced by the company and trade press include wholesale colocation, build to suit, and powered shell solutions.

STACK Infrastructure History:

  • 2025: Sold its European enterprise colocation business (seven data centers in Stockholm, Oslo, Copenhagen, Milan and Geneva) to Apollo-managed funds; it now operates as Vaultica. STACK EMEA kept its hyperscale campuses.
  • 2023: Opened the first Australian data center in Melbourne on a multi-building campus.
  • 2023: Delivered the first 8 MW phase of a planned 56 MW campus in Toronto.
  • 2022: Rebranded DigiPlex (Nordics) and SUPERNAP Italia (Milan) as STACK EMEA.
  • 2019: IPI Partners launched STACK Infrastructure by combining the three Infomart Data Centers sites with selected T5 Data Centers assets. The company was rebranded as STACK INFRASTRUCTURE
  • 2018: ASB Real Estate Investments sold the three remaining Infomart Data Centers facilities in San Jose, Hillsboro, and Ashburn to IPI Partners; the Dallas Infomart carrier hotel was sold separately to Equinix earlier that year.
  • 2014: Acquired a facility in Ashburn that had been owned by AOL.
  • 2014: ASB Real Estate Fund, a subsidiary of DCI Technology Holdings, merged Infomart with Fortune Data Centers. The combined company was renamed to Infomart Data Centers.
  • 2012: Expanded to Oregon with a building in Hillsboro
  • 2007: John Sheputis purchased first Fortune Data Center in San Jose, CA, backed by ASB Real Estate
  • 2006: ASB Real Estate purchased Infomart Dallas building
  • 2006: Fortune Founded as Fortune Data Centers

STACK INFRASTRUCTURE Data Center Map

STACK INFRASTRUCTURE Power Growth Over Time

+183% since 2022
Operational
Construction
Planned
Prospective
Land Bank
In Doubt
Currently Operational
across NN Request Dataset sites
Under Construction
NN Request Dataset sites currently building
Planned / Prospective
NN Request Dataset sites announced, but haven't started construction

STACK INFRASTRUCTURE Locations

Stack: PHX02B

Phoenix

PHX02B is the second planned building on STACK's PHX02 campus at 40th Street and Loop 202 in central Phoenix, fed from the campus's dedicated on-site APS substation.

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Stack: PHX02C

Phoenix

PHX02C is a planned building in the northeast part of STACK's PHX02 campus at 40th Street and Loop 202 in central Phoenix, fed from the campus's dedicated on-site APS substation.

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STACK FRA01

Frankfurt

In 2022, STACK acquired the 17-acre site from Coca-Cola Europacific Partners Deutschland GmbH (CCEP DE), who operated a bottling and distribution plant at the location for more than 50 years.

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Stack: TOR01A

Toronto

Stack Infrastructure's TOR01 Campus is just seven miles away from 151 Front Street, Toronto's largest carrier hotel and primary internet exchange point. Toronto-based developer First Gulf partnered with STACK to deliver the initial 8MW data center by renovating an existing building TOR01A.

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STACK TKY01

Tokyo

Stack Infrastructure completed their first Tokyo facility in 2024. The campus, situated in the Inzai District of Greater Tokyo, was developed collaboratively with IPI Partners and Oaktree Capital Management.

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Louisiana

In partnership with HPC OperatorInterested in this information?Contact us, Amazon is planning to develop a large-scale data center network in Northwest Louisiana, which includes a specific site in Bossier Parish north of Benton.

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Stack: OSL03A Fetsund

Oslo

OSL03A is the first and largest data center on STACK's Fetsund campus, built as DigiPlex Fetsund for anchor tenant EVRY. Two three-storey wings hold six 700 m2 data halls around a central office and lift core.

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Stack: SYD01B

Sydney

SYD01B is the western building and second stage of STACK's SYD01 campus at 78 Lockwood Road, Erskine Park: a three-storey hyperscale data centre with 16 data halls on two levels.

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STACK: ATL02B

Atlanta

Stack Infrastructure is to build two data centers outside Atlanta, Georgia. The project, known as the Lithia Springs Data Center, will see two three-story data centers developed at 808 Factory Shoals Road.

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Stack: PHX02A

Phoenix

PHX02A is the first building on STACK's PHX02 campus at 40th Street and Loop 202 in central Phoenix: a 221,540 sq ft data center built by Holder Construction, fed from the on-site APS substation. Foundation work began in 2026.

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Stack: MIL01C

Milan

STACK's MIL01C is the smallest of three buildings on the MIL01 campus in Siziano, south of Milan, with solar panels on its roof. STACK built it from 2023.

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STACK: STO01B

Stockholm

STACK's STO01B is a data center under construction in Upplands Väsby, north of Stockholm. It stands beside STO01A, the former DigiPlex building that Vaultica has run since 2025.

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Stack: MIL01A

Milan

STACK's MIL01A is the first building on the MIL01 campus in Siziano, south of Milan. SUPERNAP Italia opened it in 2016 and it became STACK in 2022. Vaultica also sells colocation on the campus.

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STACK Osaka KIX01

Osaka

Located in Osaka’s eastern suburb of Keihanna, this data center campus will comprise three buildings with robust access to power and network to ensure strong reliability.

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Stack: MIL01B

Milan

STACK's MIL01B is the second building on the MIL01 campus in Siziano, south of Milan, with two independent data halls. SUPERNAP Italia completed it in 2021 and it became STACK in 2022.

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Stack: GEN03

Geneva

STACK's GEN03 is a planned data center on Route des Avouillons in Gland, between Geneva and Lausanne, beside its GEN02 building. STACK filed the building permit in 2025.

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Stack: DFW02A

Dallas

Stack Infrastructure is developing a new data center campus outside Dallas, Texas. The campus, known as DFW2, spans over 102 acres and is set to accommodate both shell and turnkey deployments.

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Stack: SYD01A

Sydney

SYD01A is the eastern building and first stage of STACK's SYD01 campus at 78 Lockwood Road, Erskine Park: a three-storey hyperscale data centre with 16 data halls on two levels, built with the campus substation and generator gantry.

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STACK: MIL02A

Milan

Stack Infrastructure's MIL02A data center sits adjacent to the MIL01 campus and is served by 100% renewable power. This is Stack's third data center in Siziano.

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Stack: JHB01A

Johor

JHB01A is the first of two buildings on STACK's JHB01 campus in Iskandar Puteri, Johor: a two-storey data center with a multi-level external electrical yard, beside the campus's on-site TNB 275 kV substation. Construction began in 2025.

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Stack: ATL01A

Atlanta

STACK's original ATL01 building: a single-story, 105,000 sq ft data center at 3200 Webb Bridge Road in Alpharetta, built by T5 Data Centers as T5@Atlanta and acquired by STACK in 2019.

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Stack: JHB01B

Johor

JHB01B is the second building planned on STACK's JHB01 campus in Iskandar Puteri, Johor, on the east side of the lot beside JHB01A and served by the campus's on-site TNB 275 kV substation.

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STACK: Babenhausen, Hesse

Hesse

Hyperscale operator Stack Infrastructure has canceled its proposed €3 billion ($3.4 billion) data center campus in Babenhausen, Hesse, citing prolonged planning uncertainties and stringent local government demands.

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Stack: GEN02

Geneva

STACK's GEN02 is a large carrier-neutral data center in Gland, between Geneva and Lausanne. Safe Host opened it in 2017 as SH2 and it became STACK in 2022. Vaultica also sells colocation in the building.

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Stack: DFW01B

Dallas

Greenfield data center at 6715 Pinecrest Drive in Plano, built by T5 Data Centers as T5@Dallas III next to DFW01A, with five data halls and LEED Silver certification.

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Stack: DFW01C

Dallas

Planned STACK build-to-suit data center on the 16-acre former Spring Creek Golf Center lot at 5601 W Spring Creek Parkway in Plano, next to DFW01A and DFW01B.

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Stack: CHI01A

Chicago: Suburban

Single-story data center at 1441 Touhy Avenue in Elk Grove Village. Forsythe Technology broke ground on it in 2014, T5 bought it in 2016, and IPI Partners made it part of STACK. It adjoins CHI01B on a shared 14-acre parcel.

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Stack: SVY01A

San Francisco Bay Area

Former Seagate fab at 2001 Fortune Drive in North San Jose, rebuilt by Fortune Data Centers with seismic upgrades to FEMA essential-facility standards and later run by Infomart and STACK. It shares its 9-acre parcel with SVY01B.

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Stack: Perth PER01

Perth

Stack Infrastructure is planning to develop a data center campus in Wangara, a light industrial suburb of Perth. The proposed campus is set to include two buildings, tentatively named PER01A and PER01B.

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Stack: PHX02D

Phoenix

PHX02D is a planned building in the north-central part of STACK's PHX02 campus at 40th Street and Loop 202 in central Phoenix, fed from the campus's dedicated on-site APS substation.

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Stack: POR03C

Portland

Situated at 4735 NE Starr Blvd, Building C, STACK Infrastructure’s latest data center represents a significant addition to the region's digital infrastructure, reinforcing Hillsboro’s status as a premier data center hub.

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Stack: TOR01C

Toronto

Stack Infrastructure's TOR01C facility is just seven miles away from 151 Front Street. The third phase will offer 24MW to support client growth on a campus tailored as a purpose-built solution for scalability.

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Stack: PHX02E

Phoenix

PHX02E is a planned building in the northwest part of STACK's PHX02 campus at 40th Street and Loop 202 in central Phoenix, beside the campus's dedicated on-site APS substation.

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Stack: POR03B

Portland

STACK Infrastructure is constructing a new data center facility at 4735 NE Starr Blvd, Building B, in Hillsboro with a substantial footprint of 180000 square feet.

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STACK: ZUR02 Beringen

Zurich

STACK Infrastructure topped out its ZUR02 facility in Beringen, Schaffhausen, in 2025. The facility was previously known as Safe Host SH5 Beringen before the company was acquired by STACK in May 2022.

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Stack: TOR01B

Toronto

Stack Infrastructure's TOR01B facility is just seven miles away from 151 Front Street. The 24MW phase of development features committed power from Toronto Hydro from three diverse substations using 100% renewable energy sources.

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Stack: PER01B

Perth

Stack Infrastructure is planning to develop a data center campus in Wangara, a light industrial suburb of Perth. The proposed campus is set to include two buildings, tentatively named PER01A and PER01B. At full build-out, the campus will span across ~220k sqft (~20.5k sqm) of area.

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STACK: ATL02A

Atlanta

Stack Infrastructure is to build two data centers outside Atlanta, Georgia. The project, known as the Lithia Springs Data Center, will see two three-story data centers developed at 808 Factory Shoals Road.

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Stack: DFW01A

Dallas

Former Stream Data Centers powered shell at 6653 Pinecrest Drive in Plano's Legacy Business Park, converted by T5 Data Centers from 2011 and enlarged in 2013 into four independent data centers, one of them Equinix DA7.

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STACK: POR03A

Portland

STACK Infrastructure is constructing a new data center facility named POR03A at 4735 NE Starr Blvd, Hillsboro, OR. The data center will boast a substantial footprint of 180000 square feet.

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STACK INFRASTRUCTURE Data Center Photos See all

The site was previously built and operated by Infomart before rebranding to STACK in January 2019.
STACK Ashburn Site Layout
Source: Stack Infra

The site was previously built and operated by Infomart before rebranding to STACK in January 2019.

Artist Rendering of Infomart Ashburn
Source: Infomart Data Centers
Infomart Ashburn Lobby
Source: Infomart Data Centers
Map of Nationwide Insurance Campus in Columbus
Source: Baxtel
Aerial Photo of the Alliance Campus
Source: STACK
416 MWs?!
STACK Dallas Masterplan
Source: STACK

416 MWs?!

CHI01 Site Layout
Source: STACK
Rendering of the STACK expansion facility in Elk Grove
Source: STACK
Expansion area
Source: Baxtel
Rendering of STACK's two story ATL2 facility
Source: STACK
Outside of the Fetsund facility
Source: Baxtel
Fetsund II under construction in 2020
Source: Baxtel
Construction was completed in September 2020
Rendering of Fetsund II next to the existing facility
Source: Baxtel

Construction was completed in September 2020

Drone photo of Hobol Facility
Source: Baxtel
Generators
Source: Digiplex
The Lobby before the STACK rebrand
Source: Baxtel
Customer Lounge area
Source: Baxtel
Colocation Floor Area
Source: Baxtel
Master Campus Plan with 3 buildings
Source: Stack
Rendering of the New SUPERNAP Italia
Source: Baxtel
Rendering of the new STACK Toronto data center built at the old Eli Lily facility
Source: First Gulf
The Geneva-based data center operator Safe Host is investing in the municipality of Beringen in the canton of Schaffhausen. The company is planning to build a new data center on the site of the for...
Rendering of SafeHost SH5 facility built in 2020
Source: Baxtel

The Geneva-based data center operator Safe Host is investing in the municipality of Beringen in the canton of Schaffhausen. The company is planning to build a new data center on the site of the former SIG tennis club.

Safe Host SH2
Source: Baxtel
Site Floor Plan for POR03
Source: Baxtel
Rendering of POR 03
Source: Baxtel
CHI02 floor layout
Source: STACK Infrastructure
Rendering of SVY02
Source: Baxtel
Stack's Zurich facility
Source: Baxtel
COP02 campus layout
Source: STACK
Campus layout for Stack Infrastructure's 5 building campus near Phoenix Sky Harbor International Airport
Source: STACK Infrastructure
location of the Colt facility in Osaka
Source: Baxtel
Location of STACK's 2 building campus
Source: Baxtel
Campus Plan as of mid-2022
Source: Baxtel
Stack DFW02 Campus Map
Source: STACK Infrastructure
Stack Infrastructure ATL02 Sitemap
Source: STACK Infrastructure
Stack Infrastructure ATL02 Sitemap
Source: STACK Infrastructure
Rendering of Stack Inrfastructure's OSLL4 Campus in Oslo
Source: STACK Infrastructure
An aerial view of Stack Infrastructure's MIL01 Campus in Milan
Source: Schneider Electric Italia
Stack Infrastructure's MIL02A campus in milan
Source: STACK Infrastructure
Aerial view of Stack's MIL08 campus plot in Milan
Source: STACK Infrastructure
Stack Infrastructure's STO01 Campus Sitemap
Source: STACK Infrastructure
Stack Infrastructure's MEL01 Campus in Melbourne
Source: STACK Infrastructure
Stack Infrastructure's MEL01 Campus in Melbourne
Source: STACK Infrastructure
Stack Infrastructure's CAN01A Data Center Sitemap
Source: STACK Infrastructure
Stack Infrastructure's Perth PER01 Campus Sitemap
Source: STACK Infrastructure
Rendering of Stack Infrastructure's Perth PER01 Campus
Source: STACK Infrastructure
Stack Infrastructure's NVA06 Campus Sitemap
Source: STACK Infrastructure
Stack Infrastructure's NVA06 Campus Sitemap
Source: STACK Infrastructure
Peterson Companies Stafford Tech Park in Virginia
Source: Peterson Companies
Stack Infrastructure's Sitemap for Loudoun County Campus
Source: STACK Infrastructure
The site for Stack Infrastructure's Proposed Development in Fredericksburg, Virginia
Source: Fredericksburg City Council
Rendering of Stack's FRAL1 data center in Frankfurt, Germany
Source: STACK Infrastructure
Rendering of Stack Infrastructure's JHB01 Campus in Johor
Source: STACK Infrastructure

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