Data Center Campus
STACK's OSL03 campus sits in the Heia business park at Fetsund, Lillestrom, about 30 km east of Oslo, with four data centers on 100% renewable hydro power. First built in 2015 as DigiPlex Fetsund, with expansions through 2024.
STACK's OSL03 campus lies in the Heia business park at Fetsund in Lillestrøm municipality, Akershus, about 30 km east of central Oslo. The land is two adjoining cadastral parcels (gnr 436, bnr 108 and 118) of about 3.4 hectares.
History. The project began as a partnership of Entra and Lefdal Gruver. DigiPlex took it over in 2013 after EVRY (now Tietoevry) signed a 20-year lease as anchor tenant. DigiPlex started two more buildings in 2019, partly funded by a NOK 655 million bond. IPI Partners bought DigiPlex in 2021 and merged it into STACK Infrastructure. STACK kept Fetsund when Apollo bought its European enterprise colocation business in 2025.
Infrastructure. Elvia's grid serves the site through dual (N+N) high-voltage feeds rated 24 MW. Each building has its own containerized 2.5 MVA diesel generators in N+1, with belly tanks holding 48 hours of fuel and a separate landlord generator. Cooling is indirect evaporative air-to-air, with snow melt and rainwater reuse. All power is certified 100% renewable hydro.
Expansion. STACK's 2022 brochures show room for seven buildings on the campus.
Buildings
| Site | Operator | Status | Operational | Building Size | Built |
|---|---|---|---|---|---|
| Stack: OSL03A Fetsund | STACK INFRASTRUCTURE |
Operational
|
░░░ Request Dataset MW | ░░░░░░░ Request Dataset SqFt | 2015 |
| Stack: OSL03B | STACK INFRASTRUCTURE |
Operational
|
░░░ Request Dataset MW | ░░░░░░ Request Dataset SqFt | 2020 |
| Stack: OSL03C | STACK INFRASTRUCTURE |
Operational
|
░░░ Request Dataset MW | ░░░░░░ Request Dataset SqFt | 2021 |
| Stack: OSL03D | STACK INFRASTRUCTURE |
Operational
|
░░░ Request Dataset MW | ░░░░░░ Request Dataset SqFt | 2024 |
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.
June 13, 2021 Stack: OSL03C
DigiPlex has just opened its new data center in Norway. This is the Company’s third data center at its Fetsund Campus. With white space of 9,700 square feet and a 3MW capacity, this would bring the total floorspace at the Fetsund campus to 64,500 square feet. The campus’s total capacity is also...
Read more
September 09, 2020 Stack: OSL03A Fetsund
Data center provider DigiPlex has announced that it opened a second facility at Fetsund in Lillestrom borough in the county of Viken. The new data centre is 2,200 square metres and is built to support 3 MW. The new facility is adjacent to the existing Fetsund facility, a 10 MW data center.The 3...
Read more
September 16, 2019 Vaultica: OSL01
DigiPlex has broken ground on the construction of two new data centres near Oslo, Norway. The two centres will have a combined facility size of 8,500 m² and represent an investment of NOK 600 million. The centers are set to be operational in just 12 months, before the end of 2020.International...
Read more
