maincubes one
maincubes is a Frankfurt-headquartered European data center operator founded in 2012, majority-owned by DTCP, running four operational facilities across Germany and the Netherlands (~28 MW) with a ~400 MW pipeline anchored by the BER02/mainHub Berlin AI/HPC campus, serving hyperscalers, public-sector clients, and European enterprises.
- Company typePrivate
- Founded2012
- HeadquartersFrankfurt, Germany
- Headcount11–50
- GTM typeB2B
- OfferingServices
What maincubes one does
maincubes one is a European data center operator founded in 2012 and headquartered in Frankfurt, Germany. The company is privately held and majority-owned by DTCP (Deutsche Telekom Capital Partners). Its portfolio comprises four operational facilities — FRA01 (Frankfurt, 6 MW), FRA02 (Frankfurt, 8 MW, public-sector dedicated), BER01 (Berlin, 9 MW, public-sector dedicated), and AMS01 (Amsterdam, 5 MW) — together with a development pipeline that brings total capacity to roughly 400 MW, headlined by the BER02/mainHub Berlin campus (144-186 MW, expandable to ~400 MW, first phase Q1/2028), FRA03 (16 MW, 2026), FRA04 (40 MW, 2029), and FRA05 (75 MW, pipeline).
The core product is wholesale and hyperscale colocation: secured power, land, and building shell, delivered with carrier-neutral connectivity, ISO 27001 / ISO 50001 / BSI C5 / KRITIS compliance, and increasingly AI/HPC-ready technical specifications including direct-to-chip liquid cooling and high-density power configurations. Differentiated positioning is built on European data sovereignty, sustainability credentials (EcoVadis Silver 2024, Blauer Engel, TÜV Süd), and a capital base of €2.475B (debt facility, January 2026) to fund a multi-year buildout.
The business model is recurring colocation revenue under multi-year contracts, with a customer mix skewed toward hyperscale/cloud providers, public-sector tenants (notably in the two dedicated Berlin and Frankfurt facilities), and European enterprise colocation. Pricing follows industry-standard per-MW recurring economics. Two disclosed customers are Telefónica and TakeASP. Revenue is not publicly disclosed. Headcount sits in the 11-50 range and reportedly doubled in 2024, with leadership additions including a CDO (Thomas Wacker, February 2025) and CFO (Thomas Funke, April 2026) to scale financial and digital operations through the buildout phase.
maincubes one firmographics
Firmographics- Name
- maincubes one
- Legal name
- maincubes Holding & Service GmbH
- Website
- https://maincubes.com
- Company type
- Private
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- maincubes is a Frankfurt-headquartered European data center operator founded in 2012, majority-owned by DTCP, running four operational facilities across Germany and the Netherlands (~28 MW) with a ~400 MW pipeline anchored by the BER02/mainHub Berlin AI/HPC campus, serving hyperscalers, public-sector clients, and European enterprises.
- Ownership category
- akta.pro rank
maincubes one industry classification
Industry- Product category
- Data Center Services
- NAICS
- Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)
- akta.pro primary industry
- HPC / AI-Optimized Data Center Facilities (HDABACAJ)
- akta.pro secondary industries
- Wholesale Colocation (Powered Shells / Suites) (HDABACAB), Enterprise Data Centers & On-Prem Facilities (Owned/Operated) (HDABACAG), Government / Defense & High-Security Data Centers (HDABACAK)
Keywords
Where maincubes one is headquartered
LocationHeadquarters
- HQ city
- Frankfurt
- HQ country
- Germany
- HQ region
- Europe
Offices5 records
Markets served
maincubes one business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Colocation Services: Multi-tenant colocation services providing customers with secured rack space, power supply, cooling, and physical security in carrier-neutral data centers. Revenue generated from IT capacity rental measured in MW, with facilities serving hyperscalers, cloud providers, and enterprise customers.
- Hyperscale & Build-to-Suit Solutions: Custom-built hyperscale data center solutions including 'Powered Shell' and 'Built-to-Suit' options. Long-term contracts with large hyperscale customers for dedicated facilities with capacities ranging from 16 MW to 200+ MW.
- Public Sector Data Center Services: Dedicated data center services for government agencies and public institutions requiring high security, compliance, and data sovereignty. Facilities include BER01 and FRA02 for public sector use with specialized security certifications.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Enterprise colocation with custom capacity |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels5 records
maincubes one product offering
Product offeringCore offering
maincubes operates a portfolio of carrier-neutral, high-security data center facilities across Frankfurt, Berlin, and Amsterdam, delivering colocation, hyperscale build-to-suit, and public sector data center services. The portfolio includes AI/HPC-ready facilities with direct-to-chip liquid cooling, 100% renewable energy supply, and waste heat recovery feeding district heating networks. Capacity offerings range from single-MW colocation to multi-phase hyperscale deployments up to 200+ MW.
Product overview
maincubes operates a portfolio of high-security data center facilities across three strategic European locations: Frankfurt, Berlin, and Amsterdam. The portfolio is organized into two main product lines: (1) Hyperscale Data Centers for AI and Cloud Providers, offering large-scale facilities with AI-ready infrastructure, liquid cooling, and flexible configurations from powered shell to built-to-suit; and (2) Public Sector Data Centers for government agencies and critical infrastructure organizations with maximum security and data sovereignty. The current operational facilities include FRA01 (6 MW colocation), FRA02 (8 MW public sector, EU Taxonomy aligned), BER01 (9 MW public sector, Blauer Engel certified), and AMS01 (5 MW OCP Ready colocation). Development projects include FRA03 (16 MW, expected 2026), FRA04 (40 MW, expected 2029), and BER02/mainHub Berlin (144-186 MW initial capacity, expandable to 400+ MW, expected 2028). Combined portfolio exceeds 400 MW across 7 locations. The company differentiates through sustainability (EU Taxonomy alignment, Blauer Engel, EcoVadis Silver), advanced cooling technologies (liquid cooling for AI/HPC), and waste heat recovery systems for district heating.
Differentiator
Problem solved
Functional benefit
Products and services
- Hyperscale Data Centers (AI and Cloud Provider) Large-scale data center facilities designed for hyperscale cloud providers, AI/GPU workloads, and HPC applications. Features include AI-ready infrastructure, direct liquid cooling options, and flexible configurations from powered shell to built-to-suit solutions. Capacity ranges from 16 MW to 200+ MW.
- Public Sector Data Centers High-security, compliant data center environments specifically designed for government agencies, public institutions, and organizations with critical infrastructure (KRITIS) requirements. Features include maximum physical security, certified processes, complete data sovereignty, and ISO 27001, SOC2, and TÜV certifications.
- FRA01 Colocation data center in Frankfurt city center operational since 2017. Provides 6 MW capacity with 100% availability, optimal connectivity, and energy efficiency.
- FRA02 Public sector data center in Frankfurt operational since 2024. Provides 8 MW capacity (N+1) with highest operational flexibility, innovative cooling technology, and full EU Taxonomy compliance.
- FRA03 Hyperscale data center under construction in Schwalbach am Taunus (Frankfurt region) with 16 MW IT capacity. Features carrier-neutral, technology-independent, AI-ready design with maximum flexibility and liquid cooling.
- FRA04 Hyperscale and HPC data center planned in Frankfurt with 40 MW capacity. Features secured power supply, AI Ready and AI/HPC ready cooling options.
- BER01 Public sector data center in Berlin operational since 2025. Provides 9 MW capacity (N+1) with TÜV and ISO certifications, 100% availability, Blauer Engel certification, and full EU Taxonomy compliance. Features waste heat reuse for adjacent GoWest campus.
- BER02 (mainHub Berlin) Hyperscale campus in development in Nauen, Berlin region. Planned capacity of 144-186 MW with potential expansion to 400+ MW. Features 110kV substation, AI/HPC ready cooling, LEED Gold target design, and waste heat utilization for local heating networks.
- AMS01 Colocation data center in Amsterdam operational since 2018. Provides 5 MW capacity with OCP Ready certification, 100% SLA availability, PUE ≤1.6, and support for up to 20 kW per rack. Houses the European OCP Experience Center.
Quantifiable outcome
- PUE ≤1.2 achieved at hyperscale facilities
- +6 more outcomes
Companies that use maincubes one
Customer profileNamed customers2 records
Segments3 records
Ideal customer profiles3 records
maincubes one technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration20 records
AI capability3 records
Feature5 records
maincubes one partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core.
- E.DIScoreE.DIS is the regional utility provider that signed the 200 MW grid connection agreement with maincubes for the Nauen campus. The partnership ensures secured power supply for BER02 and future expansion, with connection scheduled for 2027.
- City of NauencoreThe city of Nauen collaborated with maincubes on the zoning plan and permitting process for the mainHub Berlin campus. The rapid and coordinated planning process was completed in close cooperation, creating planning certainty for the development phases.
- SÜWAG GroupcoreSÜWAG operates the district heating network for the city of Schwalbach. maincubes signed a waste heat utilization agreement with SÜWAG to feed waste heat from FRA03 into the local heating network, with maincubes providing land for heat pump installation.
- NorthshorecoreNorthshore, a specialist in data center sustainability assessments, verified that maincubes' FRA02 data center meets EU Taxonomy criteria for energy efficiency and emissions management.
- Stadtwerke GöttingencoreStadtwerke Göttingen signed a Power Purchase Agreement (PPA) with maincubes to supply 34 MW of solar power to the FRA03 data center in Schwalbach. This long-term renewable energy partnership supports maincubes' commitment to 100% green electricity operations.
- EY, XU, DCD Academycoremaincubes partnered with EY, XU, and DCD Academy to develop and rollout new ESG learning programs for employees as part of its sustainability strategy and Sustainability-Linked Loan commitments.
Scale indicators6 records
Recent moves10 records
Expansion highlights6 records
maincubes one competitors and assessment
Company assessmentBroad incumbents
- Equinix: Global retail colocation and interconnection leader with significant presence in Frankfurt (FR4–FR8) and Amsterdam (AM1–AM5). Directly comparable as a multi-tenant colocation operator serving enterprises, hyperscalers and network carriers, though much larger and more geographically diversified.
- Digital Realty: Global hyperscale and colocation operator with major Frankfurt and Amsterdam campuses (including Interxion heritage). Directly comparable as a wholesale/hyperscale and retail colocation provider serving the same AI/cloud customer set in the FLAP-D region.
- CyrusOne: Global hyperscale and enterprise data center provider, owned by KKR/Global Infrastructure Partners, with European expansion including Frankfurt and Amsterdam. Comparable as a hyperscale lease operator serving AI/cloud tenants, though US-centric in origin.
Direct peers
- NTT Data (e-shelter / Gyron / Netmagic): Operates one of Europe's largest data center platforms through e-shelter (Frankfurt/Berlin) and other European brands. Highly comparable as a German-rooted hyperscale and colocation operator with similar Frankfurt and Berlin footprints and a public-sector / regulated-industry customer base.
- Vantage Data Centers: Hyperscale-focused data center operator with major European campuses in Frankfurt, Berlin and beyond. Directly comparable business model of large build-to-suit and powered-shell leases for cloud and AI customers, with similar sustainability and AI-ready positioning.
- Stack Infrastructure: Hyperscale-focused data center developer with growing European footprint (including Frankfurt). Comparable as a powered-shell / built-to-suit operator targeting the same large cloud and AI customers, with similar ESG and liquid-cooling positioning.
Emerging players
- Iron Mountain Data Centers: Growing colocation and hyperscale platform in Europe (including Frankfurt and Amsterdam), offering carrier-neutral facilities with strong compliance positioning. Comparable as a multi-tenant operator targeting regulated and enterprise workloads, though with a different geographic centre of gravity.
- Compass Datacenters: US-rooted but expanding hyperscale data center developer with a modular build approach. Comparable in business model (large-scale, multi-tenant powered-shell and build-to-suit for hyperscalers), though currently less European-centric.
Regional players
- Telehouse (KDDI): Carrier-neutral colocation operator within the KDDI group with strong European presence including Paris, London and Frankfurt. Comparable as a multi-tenant colocation and interconnection provider, though broader in carrier-neutral enterprise focus than hyperscale.
- GDS Holdings: Asia-Pacific-focused hyperscale and retail data center operator (China, Southeast Asia, with emerging Europe footprint via DayOne). Comparable as a hyperscale and AI-ready operator pursuing a similar lease-and-build model, though primarily Asia-based.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
maincubes one social profiles
Digital presencemaincubes one compliance and trust
Trust signalCompliance14 records
maincubes one financial estimates
Financial estimateRevenue estimate
Valuation estimate
maincubes one leadership team
Management profileNumber of profiles
Profiles9 records
maincubes one funding detail
Funding detailFunding overview
Funding rounds2 records
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
maincubes one M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about maincubes one
What does maincubes one do?
maincubes operates a portfolio of carrier-neutral, high-security data center facilities across Frankfurt, Berlin, and Amsterdam, delivering colocation, hyperscale build-to-suit, and public sector data center services. The portfolio includes AI/HPC-ready facilities with direct-to-chip liquid cooling, 100% renewable energy supply, and waste heat recovery feeding district heating networks. Capacity offerings range from single-MW colocation to multi-phase hyperscale deployments up to 200+ MW.
Is maincubes one a public or private company?
maincubes one is a private company. It is classified as private equity controlled and is currently operating.
When was maincubes one founded?
maincubes one was founded in 2012. It employs 11 to 50 people.
Where is maincubes one based?
maincubes one is headquartered in Frankfurt, Germany, in the Europe region.
How does maincubes one make money?
Three revenue lines are on record. Colocation Services are the primary driver. The others are hyperscale & Build-to-Suit Solutions and public Sector Data Center Services.
Who are maincubes one's main competitors?
Broad incumbents on record are Equinix, Digital Realty and CyrusOne. Direct peers are NTT Data (e-shelter / Gyron / Netmagic), Vantage Data Centers and Stack Infrastructure. Emerging players are Iron Mountain Data Centers and Compass Datacenters. Regional players are Telehouse (KDDI) and GDS Holdings.
Does maincubes one have an API?
No public API is recorded for maincubes one.
What industry is maincubes one in?
maincubes one's product category is Data Center Services. Its primary akta.pro industry code is HDABACAJ, HPC / AI-Optimized Data Center Facilities, with a secondary code of HDABACAB, Wholesale Colocation (Powered Shells / Suites). Its NAICS code is 5415.